/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_Triplicated.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:00:00,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:00:00,613 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 06:00:00,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:00:00,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:00:00,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:00:00,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:00:00,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:00:00,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:00:00,631 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:00:00,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:00:00,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:00:00,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:00:00,632 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:00:00,632 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:00:00,632 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:00:00,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:00:00,633 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:00:00,633 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 06:00:00,633 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:00:00,633 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:00:00,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:00:00,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:00:00,637 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:00:00,638 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:00:00,639 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:00:00,639 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:00:00,639 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:00:00,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:00:00,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:00:00,639 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:00:00,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:00:00,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:00:00,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:00:00,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:00:00,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:00:00,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 06:00:00,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 06:00:00,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:00:00,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:00:00,641 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:00:00,644 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:00:00,644 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:00:00,644 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 06:00:00,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:00:00,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:00:00,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:00:00,817 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:00:00,817 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:00:00,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c [2023-12-16 06:00:01,947 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:00:02,122 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:00:02,122 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c [2023-12-16 06:00:02,131 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81368fdae/899c7a4ebdec48429482a8f1b4e0ba60/FLAG9d600a29a [2023-12-16 06:00:02,142 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81368fdae/899c7a4ebdec48429482a8f1b4e0ba60 [2023-12-16 06:00:02,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:00:02,146 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:00:02,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:00:02,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:00:02,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:00:02,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:00:02" (1/1) ... [2023-12-16 06:00:02,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15fc5a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:02, skipping insertion in model container [2023-12-16 06:00:02,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:00:02" (1/1) ... [2023-12-16 06:00:02,190 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:00:02,378 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_Triplicated.ufo.UNBOUNDED.pals.c[12106,12119] [2023-12-16 06:00:02,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:00:02,390 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:00:02,430 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_Triplicated.ufo.UNBOUNDED.pals.c[12106,12119] [2023-12-16 06:00:02,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:00:02,445 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:00:02,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:02 WrapperNode [2023-12-16 06:00:02,451 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:00:02,452 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:00:02,452 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:00:02,452 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:00:02,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:02" (1/1) ... [2023-12-16 06:00:02,464 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:02" (1/1) ... [2023-12-16 06:00:02,499 INFO L138 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 406 [2023-12-16 06:00:02,500 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:00:02,500 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:00:02,500 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:00:02,500 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:00:02,508 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:02" (1/1) ... [2023-12-16 06:00:02,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:02" (1/1) ... [2023-12-16 06:00:02,511 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:02" (1/1) ... [2023-12-16 06:00:02,526 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]. [2023-12-16 06:00:02,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:02" (1/1) ... [2023-12-16 06:00:02,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:02" (1/1) ... [2023-12-16 06:00:02,534 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:02" (1/1) ... [2023-12-16 06:00:02,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:02" (1/1) ... [2023-12-16 06:00:02,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:02" (1/1) ... [2023-12-16 06:00:02,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:02" (1/1) ... [2023-12-16 06:00:02,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:00:02,548 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:00:02,548 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:00:02,548 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:00:02,549 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:02" (1/1) ... [2023-12-16 06:00:02,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:00:02,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:02,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 06:00:02,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 06:00:02,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:00:02,632 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2023-12-16 06:00:02,633 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2023-12-16 06:00:02,633 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-12-16 06:00:02,633 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-12-16 06:00:02,633 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2023-12-16 06:00:02,634 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2023-12-16 06:00:02,634 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2023-12-16 06:00:02,635 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2023-12-16 06:00:02,635 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2023-12-16 06:00:02,635 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2023-12-16 06:00:02,635 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 06:00:02,635 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 06:00:02,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 06:00:02,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:00:02,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:00:02,735 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:00:02,737 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:00:03,194 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:00:03,214 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:00:03,214 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 06:00:03,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:00:03 BoogieIcfgContainer [2023-12-16 06:00:03,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:00:03,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:00:03,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:00:03,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:00:03,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:00:02" (1/3) ... [2023-12-16 06:00:03,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2534658a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:00:03, skipping insertion in model container [2023-12-16 06:00:03,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:00:02" (2/3) ... [2023-12-16 06:00:03,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2534658a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:00:03, skipping insertion in model container [2023-12-16 06:00:03,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:00:03" (3/3) ... [2023-12-16 06:00:03,225 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c [2023-12-16 06:00:03,238 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:00:03,239 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:00:03,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:00:03,280 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;@27d70304, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:00:03,280 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:00:03,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 130 states have (on average 1.6076923076923078) internal successors, (209), 135 states have internal predecessors, (209), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-16 06:00:03,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 06:00:03,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:03,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:03,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:03,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:03,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2074964955, now seen corresponding path program 1 times [2023-12-16 06:00:03,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:03,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394245824] [2023-12-16 06:00:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:03,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:03,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:03,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394245824] [2023-12-16 06:00:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394245824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:03,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:03,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836328058] [2023-12-16 06:00:03,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:03,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:03,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:03,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:03,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:03,537 INFO L87 Difference]: Start difference. First operand has 175 states, 130 states have (on average 1.6076923076923078) internal successors, (209), 135 states have internal predecessors, (209), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:03,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:03,646 INFO L93 Difference]: Finished difference Result 354 states and 614 transitions. [2023-12-16 06:00:03,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:03,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-16 06:00:03,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:03,659 INFO L225 Difference]: With dead ends: 354 [2023-12-16 06:00:03,659 INFO L226 Difference]: Without dead ends: 181 [2023-12-16 06:00:03,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:03,665 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 18 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:03,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 793 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:03,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-16 06:00:03,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2023-12-16 06:00:03,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 134 states have (on average 1.5671641791044777) internal successors, (210), 138 states have internal predecessors, (210), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-16 06:00:03,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 284 transitions. [2023-12-16 06:00:03,738 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 284 transitions. Word has length 14 [2023-12-16 06:00:03,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:03,739 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 284 transitions. [2023-12-16 06:00:03,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:03,739 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 284 transitions. [2023-12-16 06:00:03,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 06:00:03,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:03,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:03,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 06:00:03,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:03,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:03,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1470326834, now seen corresponding path program 1 times [2023-12-16 06:00:03,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:03,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610731786] [2023-12-16 06:00:03,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:03,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:03,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:03,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610731786] [2023-12-16 06:00:03,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610731786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:03,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:03,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:03,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440760146] [2023-12-16 06:00:03,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:03,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:03,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:03,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:03,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:03,834 INFO L87 Difference]: Start difference. First operand 179 states and 284 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:03,903 INFO L93 Difference]: Finished difference Result 372 states and 592 transitions. [2023-12-16 06:00:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:03,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-16 06:00:03,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:03,905 INFO L225 Difference]: With dead ends: 372 [2023-12-16 06:00:03,905 INFO L226 Difference]: Without dead ends: 195 [2023-12-16 06:00:03,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:03,908 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 25 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:03,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 813 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:03,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-16 06:00:03,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2023-12-16 06:00:03,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 145 states have (on average 1.5448275862068965) internal successors, (224), 149 states have internal predecessors, (224), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-16 06:00:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 300 transitions. [2023-12-16 06:00:03,920 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 300 transitions. Word has length 15 [2023-12-16 06:00:03,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:03,921 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 300 transitions. [2023-12-16 06:00:03,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:00:03,921 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 300 transitions. [2023-12-16 06:00:03,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-16 06:00:03,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:03,922 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:03,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 06:00:03,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:03,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:03,923 INFO L85 PathProgramCache]: Analyzing trace with hash -451822646, now seen corresponding path program 1 times [2023-12-16 06:00:03,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:03,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557116857] [2023-12-16 06:00:03,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:03,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:03,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:03,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557116857] [2023-12-16 06:00:03,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557116857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:03,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:03,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:00:03,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160286750] [2023-12-16 06:00:03,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:03,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:00:03,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:03,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:00:03,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:00:03,996 INFO L87 Difference]: Start difference. First operand 192 states and 300 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 06:00:04,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:04,027 INFO L93 Difference]: Finished difference Result 404 states and 638 transitions. [2023-12-16 06:00:04,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:00:04,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-12-16 06:00:04,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:04,029 INFO L225 Difference]: With dead ends: 404 [2023-12-16 06:00:04,029 INFO L226 Difference]: Without dead ends: 221 [2023-12-16 06:00:04,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:00:04,031 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 22 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:04,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 546 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:04,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-16 06:00:04,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 194. [2023-12-16 06:00:04,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 147 states have (on average 1.5374149659863945) internal successors, (226), 151 states have internal predecessors, (226), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-16 06:00:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 302 transitions. [2023-12-16 06:00:04,046 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 302 transitions. Word has length 23 [2023-12-16 06:00:04,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:04,046 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 302 transitions. [2023-12-16 06:00:04,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 06:00:04,046 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 302 transitions. [2023-12-16 06:00:04,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 06:00:04,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:04,047 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] [2023-12-16 06:00:04,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 06:00:04,048 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:04,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:04,048 INFO L85 PathProgramCache]: Analyzing trace with hash 628615801, now seen corresponding path program 1 times [2023-12-16 06:00:04,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:04,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317744352] [2023-12-16 06:00:04,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:04,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:04,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:04,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317744352] [2023-12-16 06:00:04,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317744352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:04,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:04,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:00:04,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67163680] [2023-12-16 06:00:04,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:04,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:04,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:04,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:04,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:04,150 INFO L87 Difference]: Start difference. First operand 194 states and 302 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 06:00:04,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:04,199 INFO L93 Difference]: Finished difference Result 380 states and 595 transitions. [2023-12-16 06:00:04,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:04,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2023-12-16 06:00:04,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:04,202 INFO L225 Difference]: With dead ends: 380 [2023-12-16 06:00:04,202 INFO L226 Difference]: Without dead ends: 201 [2023-12-16 06:00:04,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:04,204 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:04,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1088 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:04,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-16 06:00:04,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2023-12-16 06:00:04,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 150 states have (on average 1.5266666666666666) internal successors, (229), 154 states have internal predecessors, (229), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2023-12-16 06:00:04,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 306 transitions. [2023-12-16 06:00:04,218 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 306 transitions. Word has length 31 [2023-12-16 06:00:04,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:04,219 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 306 transitions. [2023-12-16 06:00:04,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 06:00:04,219 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 306 transitions. [2023-12-16 06:00:04,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 06:00:04,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:04,222 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] [2023-12-16 06:00:04,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 06:00:04,222 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:04,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:04,223 INFO L85 PathProgramCache]: Analyzing trace with hash 873027383, now seen corresponding path program 1 times [2023-12-16 06:00:04,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:04,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819382923] [2023-12-16 06:00:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:04,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-16 06:00:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:04,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:04,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819382923] [2023-12-16 06:00:04,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819382923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:04,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:04,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:00:04,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505036067] [2023-12-16 06:00:04,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:04,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:00:04,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:04,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:00:04,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:00:04,320 INFO L87 Difference]: Start difference. First operand 198 states and 306 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 06:00:04,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:04,396 INFO L93 Difference]: Finished difference Result 342 states and 535 transitions. [2023-12-16 06:00:04,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 06:00:04,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2023-12-16 06:00:04,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:04,400 INFO L225 Difference]: With dead ends: 342 [2023-12-16 06:00:04,400 INFO L226 Difference]: Without dead ends: 194 [2023-12-16 06:00:04,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:00:04,403 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 119 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1184 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 [2023-12-16 06:00:04,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1184 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:04,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-16 06:00:04,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-12-16 06:00:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 147 states have (on average 1.5034013605442176) internal successors, (221), 151 states have internal predecessors, (221), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-16 06:00:04,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 297 transitions. [2023-12-16 06:00:04,422 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 297 transitions. Word has length 34 [2023-12-16 06:00:04,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:04,422 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 297 transitions. [2023-12-16 06:00:04,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 06:00:04,422 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 297 transitions. [2023-12-16 06:00:04,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 06:00:04,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:04,423 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] [2023-12-16 06:00:04,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 06:00:04,423 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:04,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:04,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2012797693, now seen corresponding path program 1 times [2023-12-16 06:00:04,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:04,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821838139] [2023-12-16 06:00:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:04,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:04,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:04,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821838139] [2023-12-16 06:00:04,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821838139] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:04,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125862853] [2023-12-16 06:00:04,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:04,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:04,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:04,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:04,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 06:00:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:00:04,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:04,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:00:04,663 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:00:04,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125862853] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:00:04,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:00:04,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-12-16 06:00:04,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300771283] [2023-12-16 06:00:04,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:00:04,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:04,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:04,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:04,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:04,665 INFO L87 Difference]: Start difference. First operand 194 states and 297 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:00:04,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:04,703 INFO L93 Difference]: Finished difference Result 437 states and 682 transitions. [2023-12-16 06:00:04,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:04,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2023-12-16 06:00:04,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:04,707 INFO L225 Difference]: With dead ends: 437 [2023-12-16 06:00:04,707 INFO L226 Difference]: Without dead ends: 253 [2023-12-16 06:00:04,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:04,711 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 68 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:04,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 815 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:04,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-16 06:00:04,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 247. [2023-12-16 06:00:04,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 190 states have (on average 1.4736842105263157) internal successors, (280), 194 states have internal predecessors, (280), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-16 06:00:04,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 376 transitions. [2023-12-16 06:00:04,728 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 376 transitions. Word has length 34 [2023-12-16 06:00:04,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:04,728 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 376 transitions. [2023-12-16 06:00:04,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 06:00:04,728 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 376 transitions. [2023-12-16 06:00:04,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 06:00:04,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:04,730 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:04,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 06:00:04,941 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,SelfDestructingSolverStorable5 [2023-12-16 06:00:04,942 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:04,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:04,943 INFO L85 PathProgramCache]: Analyzing trace with hash 661632675, now seen corresponding path program 2 times [2023-12-16 06:00:04,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:04,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003666889] [2023-12-16 06:00:04,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:04,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:04,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-16 06:00:05,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:05,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003666889] [2023-12-16 06:00:05,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003666889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:05,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:05,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:05,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840514222] [2023-12-16 06:00:05,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:05,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:05,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:05,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:05,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:05,011 INFO L87 Difference]: Start difference. First operand 247 states and 376 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 06:00:05,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:05,048 INFO L93 Difference]: Finished difference Result 475 states and 743 transitions. [2023-12-16 06:00:05,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:05,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2023-12-16 06:00:05,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:05,052 INFO L225 Difference]: With dead ends: 475 [2023-12-16 06:00:05,052 INFO L226 Difference]: Without dead ends: 256 [2023-12-16 06:00:05,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:05,054 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 19 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:05,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 792 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:05,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-12-16 06:00:05,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 254. [2023-12-16 06:00:05,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 196 states have (on average 1.469387755102041) internal successors, (288), 200 states have internal predecessors, (288), 48 states have call successors, (48), 9 states have call predecessors, (48), 9 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-16 06:00:05,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 384 transitions. [2023-12-16 06:00:05,067 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 384 transitions. Word has length 56 [2023-12-16 06:00:05,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:05,068 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 384 transitions. [2023-12-16 06:00:05,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 06:00:05,068 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 384 transitions. [2023-12-16 06:00:05,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 06:00:05,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:05,069 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:05,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 06:00:05,069 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:05,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:05,069 INFO L85 PathProgramCache]: Analyzing trace with hash 714322674, now seen corresponding path program 1 times [2023-12-16 06:00:05,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:05,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447806008] [2023-12-16 06:00:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:05,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-16 06:00:05,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:05,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447806008] [2023-12-16 06:00:05,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447806008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:05,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:05,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:05,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138897635] [2023-12-16 06:00:05,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:05,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:05,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:05,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:05,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:05,149 INFO L87 Difference]: Start difference. First operand 254 states and 384 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 06:00:05,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:05,188 INFO L93 Difference]: Finished difference Result 519 states and 795 transitions. [2023-12-16 06:00:05,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:05,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2023-12-16 06:00:05,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:05,191 INFO L225 Difference]: With dead ends: 519 [2023-12-16 06:00:05,191 INFO L226 Difference]: Without dead ends: 293 [2023-12-16 06:00:05,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:05,193 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 24 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:05,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 805 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:05,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-16 06:00:05,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 290. [2023-12-16 06:00:05,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 228 states have (on average 1.4254385964912282) internal successors, (325), 232 states have internal predecessors, (325), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-16 06:00:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 427 transitions. [2023-12-16 06:00:05,207 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 427 transitions. Word has length 56 [2023-12-16 06:00:05,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:05,209 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 427 transitions. [2023-12-16 06:00:05,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 06:00:05,209 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 427 transitions. [2023-12-16 06:00:05,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 06:00:05,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:05,210 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 06:00:05,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 06:00:05,210 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:05,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:05,211 INFO L85 PathProgramCache]: Analyzing trace with hash -545843192, now seen corresponding path program 1 times [2023-12-16 06:00:05,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:05,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305300386] [2023-12-16 06:00:05,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:05,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-16 06:00:05,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:05,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305300386] [2023-12-16 06:00:05,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305300386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:05,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:05,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:00:05,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988717513] [2023-12-16 06:00:05,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:05,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:05,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:05,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:05,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:05,323 INFO L87 Difference]: Start difference. First operand 290 states and 427 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 06:00:05,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:05,348 INFO L93 Difference]: Finished difference Result 530 states and 794 transitions. [2023-12-16 06:00:05,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:05,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2023-12-16 06:00:05,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:05,351 INFO L225 Difference]: With dead ends: 530 [2023-12-16 06:00:05,351 INFO L226 Difference]: Without dead ends: 292 [2023-12-16 06:00:05,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:05,353 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 0 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:05,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1075 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:05,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-16 06:00:05,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2023-12-16 06:00:05,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 228 states have (on average 1.412280701754386) internal successors, (322), 232 states have internal predecessors, (322), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-16 06:00:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 424 transitions. [2023-12-16 06:00:05,365 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 424 transitions. Word has length 74 [2023-12-16 06:00:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:05,365 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 424 transitions. [2023-12-16 06:00:05,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 06:00:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 424 transitions. [2023-12-16 06:00:05,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-16 06:00:05,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:05,366 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:05,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 06:00:05,366 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:05,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:05,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1447243218, now seen corresponding path program 1 times [2023-12-16 06:00:05,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:05,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372098826] [2023-12-16 06:00:05,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:05,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-16 06:00:05,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:05,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372098826] [2023-12-16 06:00:05,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372098826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:05,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:05,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:05,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501741853] [2023-12-16 06:00:05,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:05,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:05,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:05,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:05,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:05,462 INFO L87 Difference]: Start difference. First operand 290 states and 424 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 06:00:05,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:05,504 INFO L93 Difference]: Finished difference Result 567 states and 850 transitions. [2023-12-16 06:00:05,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:05,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 103 [2023-12-16 06:00:05,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:05,510 INFO L225 Difference]: With dead ends: 567 [2023-12-16 06:00:05,510 INFO L226 Difference]: Without dead ends: 334 [2023-12-16 06:00:05,511 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 [2023-12-16 06:00:05,512 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 25 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:05,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 805 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:05,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-12-16 06:00:05,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 331. [2023-12-16 06:00:05,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 265 states have (on average 1.3735849056603773) internal successors, (364), 269 states have internal predecessors, (364), 54 states have call successors, (54), 11 states have call predecessors, (54), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-16 06:00:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 472 transitions. [2023-12-16 06:00:05,523 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 472 transitions. Word has length 103 [2023-12-16 06:00:05,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:05,523 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 472 transitions. [2023-12-16 06:00:05,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 06:00:05,523 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 472 transitions. [2023-12-16 06:00:05,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-16 06:00:05,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:05,527 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:05,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 06:00:05,527 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:05,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:05,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2118149951, now seen corresponding path program 1 times [2023-12-16 06:00:05,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:05,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712965358] [2023-12-16 06:00:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:05,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-12-16 06:00:05,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:05,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712965358] [2023-12-16 06:00:05,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712965358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:05,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:05,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:05,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557376383] [2023-12-16 06:00:05,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:05,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:05,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:05,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:05,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:05,605 INFO L87 Difference]: Start difference. First operand 331 states and 472 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 06:00:05,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:05,641 INFO L93 Difference]: Finished difference Result 593 states and 870 transitions. [2023-12-16 06:00:05,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:00:05,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2023-12-16 06:00:05,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:05,643 INFO L225 Difference]: With dead ends: 593 [2023-12-16 06:00:05,643 INFO L226 Difference]: Without dead ends: 325 [2023-12-16 06:00:05,644 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 [2023-12-16 06:00:05,645 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 15 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:05,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 765 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:05,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-12-16 06:00:05,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2023-12-16 06:00:05,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 260 states have (on average 1.353846153846154) internal successors, (352), 264 states have internal predecessors, (352), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-16 06:00:05,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 458 transitions. [2023-12-16 06:00:05,656 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 458 transitions. Word has length 104 [2023-12-16 06:00:05,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:05,657 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 458 transitions. [2023-12-16 06:00:05,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 06:00:05,657 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 458 transitions. [2023-12-16 06:00:05,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 06:00:05,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:05,658 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 06:00:05,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 06:00:05,658 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:05,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:05,659 INFO L85 PathProgramCache]: Analyzing trace with hash 644396980, now seen corresponding path program 1 times [2023-12-16 06:00:05,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:05,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416617477] [2023-12-16 06:00:05,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:05,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-16 06:00:05,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:05,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416617477] [2023-12-16 06:00:05,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416617477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:05,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:05,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:00:05,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33565832] [2023-12-16 06:00:05,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:05,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:05,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:05,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:05,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:05,774 INFO L87 Difference]: Start difference. First operand 325 states and 458 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 06:00:05,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:05,798 INFO L93 Difference]: Finished difference Result 568 states and 819 transitions. [2023-12-16 06:00:05,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:05,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 123 [2023-12-16 06:00:05,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:05,800 INFO L225 Difference]: With dead ends: 568 [2023-12-16 06:00:05,800 INFO L226 Difference]: Without dead ends: 327 [2023-12-16 06:00:05,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:05,801 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 0 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:05,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1059 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:05,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-16 06:00:05,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2023-12-16 06:00:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 260 states have (on average 1.3423076923076922) internal successors, (349), 264 states have internal predecessors, (349), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-16 06:00:05,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 455 transitions. [2023-12-16 06:00:05,815 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 455 transitions. Word has length 123 [2023-12-16 06:00:05,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:05,816 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 455 transitions. [2023-12-16 06:00:05,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 06:00:05,816 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 455 transitions. [2023-12-16 06:00:05,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-16 06:00:05,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:05,817 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:05,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 06:00:05,817 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:05,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:05,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2015312998, now seen corresponding path program 1 times [2023-12-16 06:00:05,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:05,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284133524] [2023-12-16 06:00:05,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:05,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:05,917 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2023-12-16 06:00:05,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:05,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284133524] [2023-12-16 06:00:05,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284133524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:05,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:05,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:05,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242671135] [2023-12-16 06:00:05,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:05,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:05,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:05,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:05,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:05,919 INFO L87 Difference]: Start difference. First operand 325 states and 455 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 06:00:05,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:05,967 INFO L93 Difference]: Finished difference Result 531 states and 779 transitions. [2023-12-16 06:00:05,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:00:05,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 156 [2023-12-16 06:00:05,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:05,969 INFO L225 Difference]: With dead ends: 531 [2023-12-16 06:00:05,969 INFO L226 Difference]: Without dead ends: 323 [2023-12-16 06:00:05,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:05,971 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 13 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:05,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 733 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:05,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-12-16 06:00:05,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2023-12-16 06:00:05,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 259 states have (on average 1.3397683397683398) internal successors, (347), 263 states have internal predecessors, (347), 52 states have call successors, (52), 11 states have call predecessors, (52), 11 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-16 06:00:05,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 451 transitions. [2023-12-16 06:00:05,982 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 451 transitions. Word has length 156 [2023-12-16 06:00:05,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:05,982 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 451 transitions. [2023-12-16 06:00:05,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 06:00:05,982 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 451 transitions. [2023-12-16 06:00:05,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-16 06:00:05,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:05,984 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:05,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 06:00:05,984 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:05,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:05,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1851796518, now seen corresponding path program 1 times [2023-12-16 06:00:05,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:05,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883216041] [2023-12-16 06:00:05,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:05,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-12-16 06:00:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2023-12-16 06:00:06,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:06,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883216041] [2023-12-16 06:00:06,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883216041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:06,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:06,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:06,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549143003] [2023-12-16 06:00:06,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:06,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:06,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:06,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:06,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:06,103 INFO L87 Difference]: Start difference. First operand 323 states and 451 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 06:00:06,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:06,153 INFO L93 Difference]: Finished difference Result 471 states and 675 transitions. [2023-12-16 06:00:06,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:06,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 175 [2023-12-16 06:00:06,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:06,155 INFO L225 Difference]: With dead ends: 471 [2023-12-16 06:00:06,155 INFO L226 Difference]: Without dead ends: 306 [2023-12-16 06:00:06,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:06,157 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 35 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:06,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 714 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:06,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-12-16 06:00:06,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2023-12-16 06:00:06,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 245 states have (on average 1.3306122448979592) internal successors, (326), 249 states have internal predecessors, (326), 49 states have call successors, (49), 11 states have call predecessors, (49), 11 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-16 06:00:06,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 424 transitions. [2023-12-16 06:00:06,167 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 424 transitions. Word has length 175 [2023-12-16 06:00:06,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:06,167 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 424 transitions. [2023-12-16 06:00:06,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 06:00:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 424 transitions. [2023-12-16 06:00:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-16 06:00:06,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:06,169 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:06,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 06:00:06,169 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:06,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:06,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1809752837, now seen corresponding path program 1 times [2023-12-16 06:00:06,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:06,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747336421] [2023-12-16 06:00:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:06,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-16 06:00:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,297 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-12-16 06:00:06,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:06,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747336421] [2023-12-16 06:00:06,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747336421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:06,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:06,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:06,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950019467] [2023-12-16 06:00:06,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:06,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:06,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:06,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:06,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:06,299 INFO L87 Difference]: Start difference. First operand 306 states and 424 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 06:00:06,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:06,342 INFO L93 Difference]: Finished difference Result 454 states and 648 transitions. [2023-12-16 06:00:06,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:06,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 177 [2023-12-16 06:00:06,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:06,344 INFO L225 Difference]: With dead ends: 454 [2023-12-16 06:00:06,344 INFO L226 Difference]: Without dead ends: 287 [2023-12-16 06:00:06,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:06,346 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 30 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:06,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 718 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:06,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-16 06:00:06,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-12-16 06:00:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 229 states have (on average 1.3231441048034935) internal successors, (303), 233 states have internal predecessors, (303), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-16 06:00:06,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 395 transitions. [2023-12-16 06:00:06,354 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 395 transitions. Word has length 177 [2023-12-16 06:00:06,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:06,355 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 395 transitions. [2023-12-16 06:00:06,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 06:00:06,355 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 395 transitions. [2023-12-16 06:00:06,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-16 06:00:06,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:06,356 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:06,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 06:00:06,356 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:06,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash -90150298, now seen corresponding path program 1 times [2023-12-16 06:00:06,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:06,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547814634] [2023-12-16 06:00:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-16 06:00:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2023-12-16 06:00:06,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:06,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547814634] [2023-12-16 06:00:06,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547814634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:06,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:06,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:00:06,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595859197] [2023-12-16 06:00:06,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:06,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:06,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:06,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:06,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:06,467 INFO L87 Difference]: Start difference. First operand 287 states and 395 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-16 06:00:06,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:06,487 INFO L93 Difference]: Finished difference Result 434 states and 618 transitions. [2023-12-16 06:00:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:06,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 178 [2023-12-16 06:00:06,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:06,489 INFO L225 Difference]: With dead ends: 434 [2023-12-16 06:00:06,489 INFO L226 Difference]: Without dead ends: 287 [2023-12-16 06:00:06,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:06,490 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 0 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1037 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 [2023-12-16 06:00:06,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1037 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:06,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-16 06:00:06,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-12-16 06:00:06,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 229 states have (on average 1.296943231441048) internal successors, (297), 233 states have internal predecessors, (297), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-16 06:00:06,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 389 transitions. [2023-12-16 06:00:06,500 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 389 transitions. Word has length 178 [2023-12-16 06:00:06,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:06,500 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 389 transitions. [2023-12-16 06:00:06,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-16 06:00:06,501 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 389 transitions. [2023-12-16 06:00:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-16 06:00:06,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:06,502 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:06,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 06:00:06,503 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:06,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:06,503 INFO L85 PathProgramCache]: Analyzing trace with hash -993656755, now seen corresponding path program 1 times [2023-12-16 06:00:06,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:06,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794718411] [2023-12-16 06:00:06,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:06,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-16 06:00:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-12-16 06:00:06,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:06,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794718411] [2023-12-16 06:00:06,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794718411] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:06,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047032264] [2023-12-16 06:00:06,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:06,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:06,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:06,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:06,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 06:00:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:06,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 06:00:06,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-12-16 06:00:06,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:00:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-12-16 06:00:06,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047032264] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:06,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:00:06,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2023-12-16 06:00:06,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409057622] [2023-12-16 06:00:06,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:06,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:06,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:06,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:06,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:06,902 INFO L87 Difference]: Start difference. First operand 287 states and 389 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 06:00:06,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:06,935 INFO L93 Difference]: Finished difference Result 455 states and 640 transitions. [2023-12-16 06:00:06,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:00:06,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 185 [2023-12-16 06:00:06,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:06,937 INFO L225 Difference]: With dead ends: 455 [2023-12-16 06:00:06,937 INFO L226 Difference]: Without dead ends: 266 [2023-12-16 06:00:06,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:06,938 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 30 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:06,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 491 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:06,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-12-16 06:00:06,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2023-12-16 06:00:06,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 211 states have (on average 1.2890995260663507) internal successors, (272), 215 states have internal predecessors, (272), 43 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 06:00:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 358 transitions. [2023-12-16 06:00:06,967 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 358 transitions. Word has length 185 [2023-12-16 06:00:06,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:06,968 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 358 transitions. [2023-12-16 06:00:06,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 06:00:06,968 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 358 transitions. [2023-12-16 06:00:06,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-16 06:00:06,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:06,969 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:06,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:07,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-16 06:00:07,175 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:07,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:07,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1118713088, now seen corresponding path program 1 times [2023-12-16 06:00:07,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:07,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823615623] [2023-12-16 06:00:07,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:07,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-12-16 06:00:07,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:07,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823615623] [2023-12-16 06:00:07,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823615623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:07,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:07,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:07,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766387473] [2023-12-16 06:00:07,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:07,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:07,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:07,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:07,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:07,272 INFO L87 Difference]: Start difference. First operand 266 states and 358 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 06:00:07,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:07,299 INFO L93 Difference]: Finished difference Result 412 states and 581 transitions. [2023-12-16 06:00:07,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:07,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 209 [2023-12-16 06:00:07,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:07,301 INFO L225 Difference]: With dead ends: 412 [2023-12-16 06:00:07,301 INFO L226 Difference]: Without dead ends: 272 [2023-12-16 06:00:07,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:07,302 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 6 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:07,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 758 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:07,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-16 06:00:07,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 270. [2023-12-16 06:00:07,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 214 states have (on average 1.2850467289719627) internal successors, (275), 218 states have internal predecessors, (275), 43 states have call successors, (43), 12 states have call predecessors, (43), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 06:00:07,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 361 transitions. [2023-12-16 06:00:07,311 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 361 transitions. Word has length 209 [2023-12-16 06:00:07,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:07,313 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 361 transitions. [2023-12-16 06:00:07,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 06:00:07,313 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 361 transitions. [2023-12-16 06:00:07,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-16 06:00:07,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:07,315 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 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, 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] [2023-12-16 06:00:07,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 06:00:07,315 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:07,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:07,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1972757185, now seen corresponding path program 1 times [2023-12-16 06:00:07,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:07,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310724603] [2023-12-16 06:00:07,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:07,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-12-16 06:00:07,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:07,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310724603] [2023-12-16 06:00:07,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310724603] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:07,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700452444] [2023-12-16 06:00:07,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:07,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:07,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:07,437 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:07,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 06:00:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 06:00:07,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-12-16 06:00:07,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:07,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700452444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:07,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:07,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-16 06:00:07,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910847786] [2023-12-16 06:00:07,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:07,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:07,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:07,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:07,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:07,590 INFO L87 Difference]: Start difference. First operand 270 states and 361 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-16 06:00:07,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:07,616 INFO L93 Difference]: Finished difference Result 421 states and 588 transitions. [2023-12-16 06:00:07,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:07,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 216 [2023-12-16 06:00:07,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:07,619 INFO L225 Difference]: With dead ends: 421 [2023-12-16 06:00:07,619 INFO L226 Difference]: Without dead ends: 277 [2023-12-16 06:00:07,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:00:07,620 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 7 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:07,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 763 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:07,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-12-16 06:00:07,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2023-12-16 06:00:07,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 218 states have (on average 1.2798165137614679) internal successors, (279), 222 states have internal predecessors, (279), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-16 06:00:07,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 365 transitions. [2023-12-16 06:00:07,628 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 365 transitions. Word has length 216 [2023-12-16 06:00:07,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:07,628 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 365 transitions. [2023-12-16 06:00:07,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-16 06:00:07,628 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 365 transitions. [2023-12-16 06:00:07,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-16 06:00:07,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:07,630 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 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, 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] [2023-12-16 06:00:07,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:07,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:07,836 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:07,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:07,837 INFO L85 PathProgramCache]: Analyzing trace with hash 375042395, now seen corresponding path program 1 times [2023-12-16 06:00:07,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:07,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197543900] [2023-12-16 06:00:07,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:07,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-12-16 06:00:07,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:07,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197543900] [2023-12-16 06:00:07,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197543900] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:07,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610279564] [2023-12-16 06:00:07,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:07,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:07,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:07,968 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:08,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 06:00:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 06:00:08,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-12-16 06:00:08,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:08,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610279564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:08,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:08,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-16 06:00:08,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638394329] [2023-12-16 06:00:08,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:08,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:08,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:08,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:08,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:08,111 INFO L87 Difference]: Start difference. First operand 275 states and 365 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-16 06:00:08,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:08,138 INFO L93 Difference]: Finished difference Result 423 states and 586 transitions. [2023-12-16 06:00:08,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:00:08,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 224 [2023-12-16 06:00:08,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:08,140 INFO L225 Difference]: With dead ends: 423 [2023-12-16 06:00:08,140 INFO L226 Difference]: Without dead ends: 274 [2023-12-16 06:00:08,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:00:08,142 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 7 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:08,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 749 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:08,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-16 06:00:08,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2023-12-16 06:00:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 218 states have (on average 1.2660550458715596) internal successors, (276), 221 states have internal predecessors, (276), 42 states have call successors, (42), 13 states have call predecessors, (42), 13 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 06:00:08,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 360 transitions. [2023-12-16 06:00:08,160 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 360 transitions. Word has length 224 [2023-12-16 06:00:08,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:08,160 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 360 transitions. [2023-12-16 06:00:08,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-16 06:00:08,160 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 360 transitions. [2023-12-16 06:00:08,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-16 06:00:08,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:08,162 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:08,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:08,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:08,362 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:08,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:08,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1160943845, now seen corresponding path program 1 times [2023-12-16 06:00:08,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:08,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940871513] [2023-12-16 06:00:08,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:08,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2023-12-16 06:00:08,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:08,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940871513] [2023-12-16 06:00:08,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940871513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:08,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:08,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:08,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802297401] [2023-12-16 06:00:08,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:08,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:08,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:08,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:08,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:08,486 INFO L87 Difference]: Start difference. First operand 274 states and 360 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 06:00:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:08,699 INFO L93 Difference]: Finished difference Result 421 states and 575 transitions. [2023-12-16 06:00:08,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:00:08,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 232 [2023-12-16 06:00:08,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:08,701 INFO L225 Difference]: With dead ends: 421 [2023-12-16 06:00:08,701 INFO L226 Difference]: Without dead ends: 273 [2023-12-16 06:00:08,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:08,702 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 63 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:08,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 470 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:00:08,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-16 06:00:08,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-12-16 06:00:08,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 218 states have (on average 1.261467889908257) internal successors, (275), 220 states have internal predecessors, (275), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 06:00:08,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 357 transitions. [2023-12-16 06:00:08,714 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 357 transitions. Word has length 232 [2023-12-16 06:00:08,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:08,714 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 357 transitions. [2023-12-16 06:00:08,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-16 06:00:08,714 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 357 transitions. [2023-12-16 06:00:08,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-16 06:00:08,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:08,716 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:08,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 06:00:08,716 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:08,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:08,716 INFO L85 PathProgramCache]: Analyzing trace with hash 363670474, now seen corresponding path program 1 times [2023-12-16 06:00:08,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:08,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880529817] [2023-12-16 06:00:08,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:08,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:08,935 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2023-12-16 06:00:08,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:08,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880529817] [2023-12-16 06:00:08,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880529817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:08,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:08,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:00:08,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402297304] [2023-12-16 06:00:08,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:08,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:08,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:08,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:08,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:08,938 INFO L87 Difference]: Start difference. First operand 273 states and 357 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-16 06:00:09,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:09,303 INFO L93 Difference]: Finished difference Result 632 states and 855 transitions. [2023-12-16 06:00:09,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:00:09,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 234 [2023-12-16 06:00:09,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:09,306 INFO L225 Difference]: With dead ends: 632 [2023-12-16 06:00:09,307 INFO L226 Difference]: Without dead ends: 485 [2023-12-16 06:00:09,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:00:09,308 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 421 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:09,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 613 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:00:09,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2023-12-16 06:00:09,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 479. [2023-12-16 06:00:09,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 377 states have (on average 1.312997347480106) internal successors, (495), 379 states have internal predecessors, (495), 70 states have call successors, (70), 31 states have call predecessors, (70), 31 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-16 06:00:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 635 transitions. [2023-12-16 06:00:09,335 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 635 transitions. Word has length 234 [2023-12-16 06:00:09,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:09,335 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 635 transitions. [2023-12-16 06:00:09,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-16 06:00:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 635 transitions. [2023-12-16 06:00:09,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-12-16 06:00:09,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:09,337 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 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, 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] [2023-12-16 06:00:09,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 06:00:09,338 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:09,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:09,338 INFO L85 PathProgramCache]: Analyzing trace with hash 22352055, now seen corresponding path program 1 times [2023-12-16 06:00:09,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:09,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550568682] [2023-12-16 06:00:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:09,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-16 06:00:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-16 06:00:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-16 06:00:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-16 06:00:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2023-12-16 06:00:09,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:09,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550568682] [2023-12-16 06:00:09,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550568682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:09,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:09,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:09,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926061768] [2023-12-16 06:00:09,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:09,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:09,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:09,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:09,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:09,466 INFO L87 Difference]: Start difference. First operand 479 states and 635 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-16 06:00:09,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:09,802 INFO L93 Difference]: Finished difference Result 1048 states and 1441 transitions. [2023-12-16 06:00:09,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:09,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 265 [2023-12-16 06:00:09,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:09,806 INFO L225 Difference]: With dead ends: 1048 [2023-12-16 06:00:09,806 INFO L226 Difference]: Without dead ends: 767 [2023-12-16 06:00:09,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:09,807 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 225 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:09,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 467 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:00:09,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2023-12-16 06:00:09,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 598. [2023-12-16 06:00:09,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 471 states have (on average 1.3227176220806793) internal successors, (623), 477 states have internal predecessors, (623), 85 states have call successors, (85), 41 states have call predecessors, (85), 41 states have return successors, (85), 81 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-16 06:00:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 793 transitions. [2023-12-16 06:00:09,837 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 793 transitions. Word has length 265 [2023-12-16 06:00:09,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:09,837 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 793 transitions. [2023-12-16 06:00:09,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-16 06:00:09,837 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 793 transitions. [2023-12-16 06:00:09,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-12-16 06:00:09,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:09,839 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 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, 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] [2023-12-16 06:00:09,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 06:00:09,839 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:09,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:09,840 INFO L85 PathProgramCache]: Analyzing trace with hash 569855187, now seen corresponding path program 1 times [2023-12-16 06:00:09,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:09,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078540377] [2023-12-16 06:00:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:09,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-16 06:00:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-16 06:00:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-16 06:00:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-16 06:00:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:09,946 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2023-12-16 06:00:09,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:09,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078540377] [2023-12-16 06:00:09,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078540377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:09,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:09,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:09,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323084644] [2023-12-16 06:00:09,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:09,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:09,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:09,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:09,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:09,947 INFO L87 Difference]: Start difference. First operand 598 states and 793 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-16 06:00:10,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:10,292 INFO L93 Difference]: Finished difference Result 1322 states and 1805 transitions. [2023-12-16 06:00:10,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:10,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 266 [2023-12-16 06:00:10,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:10,297 INFO L225 Difference]: With dead ends: 1322 [2023-12-16 06:00:10,297 INFO L226 Difference]: Without dead ends: 955 [2023-12-16 06:00:10,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:10,298 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 226 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:10,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 495 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:00:10,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2023-12-16 06:00:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 947. [2023-12-16 06:00:10,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 740 states have (on average 1.3513513513513513) internal successors, (1000), 754 states have internal predecessors, (1000), 139 states have call successors, (139), 67 states have call predecessors, (139), 67 states have return successors, (139), 129 states have call predecessors, (139), 139 states have call successors, (139) [2023-12-16 06:00:10,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1278 transitions. [2023-12-16 06:00:10,371 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1278 transitions. Word has length 266 [2023-12-16 06:00:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:10,372 INFO L495 AbstractCegarLoop]: Abstraction has 947 states and 1278 transitions. [2023-12-16 06:00:10,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-16 06:00:10,372 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1278 transitions. [2023-12-16 06:00:10,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-16 06:00:10,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:10,374 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 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, 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] [2023-12-16 06:00:10,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 06:00:10,375 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:10,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:10,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1524149778, now seen corresponding path program 1 times [2023-12-16 06:00:10,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:10,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204288226] [2023-12-16 06:00:10,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:10,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 06:00:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-12-16 06:00:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 06:00:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2023-12-16 06:00:10,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:10,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204288226] [2023-12-16 06:00:10,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204288226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:10,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:10,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:00:10,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772563229] [2023-12-16 06:00:10,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:10,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:10,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:10,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:10,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:00:10,487 INFO L87 Difference]: Start difference. First operand 947 states and 1278 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 06:00:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:10,842 INFO L93 Difference]: Finished difference Result 2207 states and 3056 transitions. [2023-12-16 06:00:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:10,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 267 [2023-12-16 06:00:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:10,847 INFO L225 Difference]: With dead ends: 2207 [2023-12-16 06:00:10,848 INFO L226 Difference]: Without dead ends: 1531 [2023-12-16 06:00:10,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:10,849 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 226 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:10,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 522 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:00:10,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2023-12-16 06:00:10,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1517. [2023-12-16 06:00:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1178 states have (on average 1.3786078098471986) internal successors, (1624), 1206 states have internal predecessors, (1624), 231 states have call successors, (231), 107 states have call predecessors, (231), 107 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2023-12-16 06:00:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2086 transitions. [2023-12-16 06:00:10,973 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2086 transitions. Word has length 267 [2023-12-16 06:00:10,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:10,974 INFO L495 AbstractCegarLoop]: Abstraction has 1517 states and 2086 transitions. [2023-12-16 06:00:10,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 06:00:10,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2086 transitions. [2023-12-16 06:00:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-16 06:00:10,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:10,976 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 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, 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] [2023-12-16 06:00:10,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 06:00:10,976 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:10,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:10,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1129782992, now seen corresponding path program 1 times [2023-12-16 06:00:10,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:10,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897884320] [2023-12-16 06:00:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:10,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 06:00:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-12-16 06:00:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-12-16 06:00:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2023-12-16 06:00:11,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:11,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897884320] [2023-12-16 06:00:11,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897884320] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:11,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996287650] [2023-12-16 06:00:11,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:11,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:11,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:11,150 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:11,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 06:00:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:00:11,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2023-12-16 06:00:11,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:11,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996287650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:11,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:11,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-12-16 06:00:11,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787144488] [2023-12-16 06:00:11,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:11,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:11,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:11,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:11,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-16 06:00:11,332 INFO L87 Difference]: Start difference. First operand 1517 states and 2086 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 06:00:11,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:11,440 INFO L93 Difference]: Finished difference Result 2803 states and 3913 transitions. [2023-12-16 06:00:11,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:11,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 267 [2023-12-16 06:00:11,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:11,445 INFO L225 Difference]: With dead ends: 2803 [2023-12-16 06:00:11,445 INFO L226 Difference]: Without dead ends: 1517 [2023-12-16 06:00:11,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-16 06:00:11,448 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 51 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:11,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 666 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2023-12-16 06:00:11,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1517. [2023-12-16 06:00:11,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1178 states have (on average 1.3582342954159592) internal successors, (1600), 1206 states have internal predecessors, (1600), 231 states have call successors, (231), 107 states have call predecessors, (231), 107 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2023-12-16 06:00:11,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2062 transitions. [2023-12-16 06:00:11,570 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2062 transitions. Word has length 267 [2023-12-16 06:00:11,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:11,571 INFO L495 AbstractCegarLoop]: Abstraction has 1517 states and 2062 transitions. [2023-12-16 06:00:11,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 06:00:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2062 transitions. [2023-12-16 06:00:11,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-12-16 06:00:11,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:11,573 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 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, 3, 3, 3, 3, 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] [2023-12-16 06:00:11,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:11,779 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,SelfDestructingSolverStorable25 [2023-12-16 06:00:11,780 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:11,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:11,780 INFO L85 PathProgramCache]: Analyzing trace with hash 336998433, now seen corresponding path program 1 times [2023-12-16 06:00:11,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:11,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209900914] [2023-12-16 06:00:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:11,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 06:00:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 06:00:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-16 06:00:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2023-12-16 06:00:11,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:11,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209900914] [2023-12-16 06:00:11,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209900914] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:11,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656948898] [2023-12-16 06:00:11,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:11,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:11,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:11,971 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:11,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 06:00:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:00:12,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:12,160 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2023-12-16 06:00:12,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:12,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656948898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:12,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:12,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-12-16 06:00:12,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73093528] [2023-12-16 06:00:12,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:12,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:12,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:12,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:12,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-16 06:00:12,162 INFO L87 Difference]: Start difference. First operand 1517 states and 2062 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 06:00:12,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:12,269 INFO L93 Difference]: Finished difference Result 2803 states and 3857 transitions. [2023-12-16 06:00:12,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:12,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 268 [2023-12-16 06:00:12,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:12,276 INFO L225 Difference]: With dead ends: 2803 [2023-12-16 06:00:12,276 INFO L226 Difference]: Without dead ends: 1565 [2023-12-16 06:00:12,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-16 06:00:12,280 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 15 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:12,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 689 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:12,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2023-12-16 06:00:12,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2023-12-16 06:00:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1218 states have (on average 1.3596059113300492) internal successors, (1656), 1246 states have internal predecessors, (1656), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2023-12-16 06:00:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2118 transitions. [2023-12-16 06:00:12,389 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2118 transitions. Word has length 268 [2023-12-16 06:00:12,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:12,389 INFO L495 AbstractCegarLoop]: Abstraction has 1565 states and 2118 transitions. [2023-12-16 06:00:12,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 06:00:12,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2118 transitions. [2023-12-16 06:00:12,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-12-16 06:00:12,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:12,391 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 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, 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] [2023-12-16 06:00:12,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:12,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-16 06:00:12,598 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:12,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:12,598 INFO L85 PathProgramCache]: Analyzing trace with hash -714521494, now seen corresponding path program 1 times [2023-12-16 06:00:12,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:12,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433615698] [2023-12-16 06:00:12,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:12,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 06:00:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 06:00:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-16 06:00:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2023-12-16 06:00:12,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:12,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433615698] [2023-12-16 06:00:12,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433615698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:12,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:12,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 06:00:12,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888995144] [2023-12-16 06:00:12,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:12,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 06:00:12,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:12,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 06:00:12,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:00:12,846 INFO L87 Difference]: Start difference. First operand 1565 states and 2118 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 06:00:13,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:13,324 INFO L93 Difference]: Finished difference Result 2387 states and 3465 transitions. [2023-12-16 06:00:13,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:00:13,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 269 [2023-12-16 06:00:13,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:13,338 INFO L225 Difference]: With dead ends: 2387 [2023-12-16 06:00:13,338 INFO L226 Difference]: Without dead ends: 2385 [2023-12-16 06:00:13,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-16 06:00:13,340 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 236 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:13,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 1482 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:00:13,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2023-12-16 06:00:13,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1613. [2023-12-16 06:00:13,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1250 states have (on average 1.3504) internal successors, (1688), 1286 states have internal predecessors, (1688), 239 states have call successors, (239), 123 states have call predecessors, (239), 123 states have return successors, (239), 211 states have call predecessors, (239), 239 states have call successors, (239) [2023-12-16 06:00:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2166 transitions. [2023-12-16 06:00:13,468 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2166 transitions. Word has length 269 [2023-12-16 06:00:13,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:13,468 INFO L495 AbstractCegarLoop]: Abstraction has 1613 states and 2166 transitions. [2023-12-16 06:00:13,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-16 06:00:13,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2166 transitions. [2023-12-16 06:00:13,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-16 06:00:13,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:13,470 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:13,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-16 06:00:13,471 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:13,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:13,471 INFO L85 PathProgramCache]: Analyzing trace with hash -932347161, now seen corresponding path program 1 times [2023-12-16 06:00:13,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:13,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511028526] [2023-12-16 06:00:13,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:13,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 06:00:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 06:00:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-16 06:00:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2023-12-16 06:00:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,717 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2023-12-16 06:00:13,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:13,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511028526] [2023-12-16 06:00:13,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511028526] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:13,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616341805] [2023-12-16 06:00:13,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:13,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:13,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:13,718 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:13,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 06:00:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:13,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 06:00:13,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 251 proven. 37 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-12-16 06:00:14,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:00:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2023-12-16 06:00:14,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616341805] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:00:14,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:00:14,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2023-12-16 06:00:14,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403006794] [2023-12-16 06:00:14,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:00:14,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 06:00:14,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:14,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 06:00:14,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-16 06:00:14,265 INFO L87 Difference]: Start difference. First operand 1613 states and 2166 transitions. Second operand has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 14 states have internal predecessors, (150), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2023-12-16 06:00:15,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:15,811 INFO L93 Difference]: Finished difference Result 4163 states and 5917 transitions. [2023-12-16 06:00:15,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 06:00:15,812 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 14 states have internal predecessors, (150), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) Word has length 277 [2023-12-16 06:00:15,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:15,822 INFO L225 Difference]: With dead ends: 4163 [2023-12-16 06:00:15,822 INFO L226 Difference]: Without dead ends: 2829 [2023-12-16 06:00:15,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 600 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 06:00:15,825 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 350 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:15,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 2424 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1898 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 06:00:15,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2023-12-16 06:00:15,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 2399. [2023-12-16 06:00:15,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 1853 states have (on average 1.3389098758769562) internal successors, (2481), 1905 states have internal predecessors, (2481), 356 states have call successors, (356), 183 states have call predecessors, (356), 189 states have return successors, (364), 318 states have call predecessors, (364), 356 states have call successors, (364) [2023-12-16 06:00:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3201 transitions. [2023-12-16 06:00:16,003 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3201 transitions. Word has length 277 [2023-12-16 06:00:16,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:16,003 INFO L495 AbstractCegarLoop]: Abstraction has 2399 states and 3201 transitions. [2023-12-16 06:00:16,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 14 states have internal predecessors, (150), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2023-12-16 06:00:16,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3201 transitions. [2023-12-16 06:00:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-16 06:00:16,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:16,006 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:16,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:16,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:16,214 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:16,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:16,214 INFO L85 PathProgramCache]: Analyzing trace with hash 29266856, now seen corresponding path program 1 times [2023-12-16 06:00:16,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:16,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436216074] [2023-12-16 06:00:16,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:16,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 06:00:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 06:00:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-16 06:00:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2023-12-16 06:00:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2023-12-16 06:00:16,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:16,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436216074] [2023-12-16 06:00:16,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436216074] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:16,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001129649] [2023-12-16 06:00:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:16,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:16,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:16,336 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:16,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 06:00:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:16,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 06:00:16,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:16,518 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2023-12-16 06:00:16,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:16,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001129649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:16,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:16,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-16 06:00:16,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235116465] [2023-12-16 06:00:16,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:16,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:16,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:16,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:16,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:16,520 INFO L87 Difference]: Start difference. First operand 2399 states and 3201 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 06:00:16,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:16,681 INFO L93 Difference]: Finished difference Result 4632 states and 6279 transitions. [2023-12-16 06:00:16,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:16,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 277 [2023-12-16 06:00:16,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:16,690 INFO L225 Difference]: With dead ends: 4632 [2023-12-16 06:00:16,690 INFO L226 Difference]: Without dead ends: 2335 [2023-12-16 06:00:16,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:00:16,694 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 11 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:16,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 689 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:16,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2023-12-16 06:00:16,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2335. [2023-12-16 06:00:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 1809 states have (on average 1.3217247097844114) internal successors, (2391), 1861 states have internal predecessors, (2391), 340 states have call successors, (340), 183 states have call predecessors, (340), 185 states have return successors, (344), 298 states have call predecessors, (344), 340 states have call successors, (344) [2023-12-16 06:00:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3075 transitions. [2023-12-16 06:00:16,823 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3075 transitions. Word has length 277 [2023-12-16 06:00:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:16,823 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3075 transitions. [2023-12-16 06:00:16,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 06:00:16,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3075 transitions. [2023-12-16 06:00:16,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-16 06:00:16,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:16,839 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:16,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:17,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:17,041 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:17,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:17,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1524886429, now seen corresponding path program 1 times [2023-12-16 06:00:17,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:17,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819430315] [2023-12-16 06:00:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:17,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 06:00:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 06:00:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-16 06:00:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-12-16 06:00:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-12-16 06:00:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-16 06:00:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-12-16 06:00:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-16 06:00:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-16 06:00:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-16 06:00:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2023-12-16 06:00:17,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:17,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819430315] [2023-12-16 06:00:17,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819430315] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:17,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907653425] [2023-12-16 06:00:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:17,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:17,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:17,146 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:17,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 06:00:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 06:00:17,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2023-12-16 06:00:17,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:17,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907653425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:17,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:17,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-16 06:00:17,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938723922] [2023-12-16 06:00:17,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:17,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:17,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:17,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:17,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:17,322 INFO L87 Difference]: Start difference. First operand 2335 states and 3075 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-16 06:00:17,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:17,450 INFO L93 Difference]: Finished difference Result 4414 states and 5920 transitions. [2023-12-16 06:00:17,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:17,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 280 [2023-12-16 06:00:17,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:17,459 INFO L225 Difference]: With dead ends: 4414 [2023-12-16 06:00:17,459 INFO L226 Difference]: Without dead ends: 2163 [2023-12-16 06:00:17,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:00:17,463 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 8 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:17,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 692 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:17,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2023-12-16 06:00:17,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2023-12-16 06:00:17,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 1667 states have (on average 1.316136772645471) internal successors, (2194), 1719 states have internal predecessors, (2194), 323 states have call successors, (323), 172 states have call predecessors, (323), 172 states have return successors, (323), 279 states have call predecessors, (323), 323 states have call successors, (323) [2023-12-16 06:00:17,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2840 transitions. [2023-12-16 06:00:17,589 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2840 transitions. Word has length 280 [2023-12-16 06:00:17,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:17,590 INFO L495 AbstractCegarLoop]: Abstraction has 2163 states and 2840 transitions. [2023-12-16 06:00:17,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-16 06:00:17,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2840 transitions. [2023-12-16 06:00:17,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-12-16 06:00:17,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:17,592 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 06:00:17,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:17,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:17,799 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:17,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:17,799 INFO L85 PathProgramCache]: Analyzing trace with hash 338938814, now seen corresponding path program 1 times [2023-12-16 06:00:17,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:17,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846050635] [2023-12-16 06:00:17,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:17,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 06:00:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 06:00:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:17,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-16 06:00:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2023-12-16 06:00:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2023-12-16 06:00:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-12-16 06:00:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,007 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2023-12-16 06:00:18,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:18,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846050635] [2023-12-16 06:00:18,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846050635] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:18,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564151665] [2023-12-16 06:00:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:18,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:18,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:18,009 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:18,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 06:00:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:18,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 06:00:18,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2023-12-16 06:00:18,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:18,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564151665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:18,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:18,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-12-16 06:00:18,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199841391] [2023-12-16 06:00:18,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:18,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 06:00:18,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:18,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 06:00:18,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2023-12-16 06:00:18,313 INFO L87 Difference]: Start difference. First operand 2163 states and 2840 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-16 06:00:18,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:18,949 INFO L93 Difference]: Finished difference Result 7089 states and 9250 transitions. [2023-12-16 06:00:18,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 06:00:18,950 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 292 [2023-12-16 06:00:18,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:18,976 INFO L225 Difference]: With dead ends: 7089 [2023-12-16 06:00:18,976 INFO L226 Difference]: Without dead ends: 5491 [2023-12-16 06:00:18,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2023-12-16 06:00:18,985 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 634 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:18,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 2693 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:00:18,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5491 states. [2023-12-16 06:00:19,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5491 to 5147. [2023-12-16 06:00:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5147 states, 3928 states have (on average 1.3021894093686355) internal successors, (5115), 4056 states have internal predecessors, (5115), 787 states have call successors, (787), 431 states have call predecessors, (787), 431 states have return successors, (787), 667 states have call predecessors, (787), 787 states have call successors, (787) [2023-12-16 06:00:19,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5147 states to 5147 states and 6689 transitions. [2023-12-16 06:00:19,339 INFO L78 Accepts]: Start accepts. Automaton has 5147 states and 6689 transitions. Word has length 292 [2023-12-16 06:00:19,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:19,339 INFO L495 AbstractCegarLoop]: Abstraction has 5147 states and 6689 transitions. [2023-12-16 06:00:19,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-16 06:00:19,339 INFO L276 IsEmpty]: Start isEmpty. Operand 5147 states and 6689 transitions. [2023-12-16 06:00:19,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-16 06:00:19,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:19,341 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 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, 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, 1, 1] [2023-12-16 06:00:19,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-16 06:00:19,548 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,SelfDestructingSolverStorable31 [2023-12-16 06:00:19,548 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:19,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:19,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1976844183, now seen corresponding path program 1 times [2023-12-16 06:00:19,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:19,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027458737] [2023-12-16 06:00:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:19,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 06:00:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 06:00:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-16 06:00:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-16 06:00:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-16 06:00:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-16 06:00:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,751 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2023-12-16 06:00:19,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:19,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027458737] [2023-12-16 06:00:19,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027458737] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:19,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912572546] [2023-12-16 06:00:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:19,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:19,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:19,752 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:19,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 06:00:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:19,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 06:00:19,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2023-12-16 06:00:19,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:19,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912572546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:19,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:19,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 12 [2023-12-16 06:00:19,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339059596] [2023-12-16 06:00:19,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:19,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 06:00:19,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:19,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 06:00:19,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-16 06:00:19,994 INFO L87 Difference]: Start difference. First operand 5147 states and 6689 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-16 06:00:20,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:20,843 INFO L93 Difference]: Finished difference Result 11021 states and 14599 transitions. [2023-12-16 06:00:20,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 06:00:20,843 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 298 [2023-12-16 06:00:20,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:20,863 INFO L225 Difference]: With dead ends: 11021 [2023-12-16 06:00:20,863 INFO L226 Difference]: Without dead ends: 6347 [2023-12-16 06:00:20,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2023-12-16 06:00:20,872 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 710 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:20,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 3016 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 06:00:20,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6347 states. [2023-12-16 06:00:21,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6347 to 5147. [2023-12-16 06:00:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5147 states, 3928 states have (on average 1.2981160896130346) internal successors, (5099), 4056 states have internal predecessors, (5099), 787 states have call successors, (787), 431 states have call predecessors, (787), 431 states have return successors, (787), 667 states have call predecessors, (787), 787 states have call successors, (787) [2023-12-16 06:00:21,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5147 states to 5147 states and 6673 transitions. [2023-12-16 06:00:21,158 INFO L78 Accepts]: Start accepts. Automaton has 5147 states and 6673 transitions. Word has length 298 [2023-12-16 06:00:21,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:21,159 INFO L495 AbstractCegarLoop]: Abstraction has 5147 states and 6673 transitions. [2023-12-16 06:00:21,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-16 06:00:21,159 INFO L276 IsEmpty]: Start isEmpty. Operand 5147 states and 6673 transitions. [2023-12-16 06:00:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-16 06:00:21,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:21,161 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 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, 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, 1, 1] [2023-12-16 06:00:21,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:21,367 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,SelfDestructingSolverStorable32 [2023-12-16 06:00:21,368 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:21,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:21,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2110857689, now seen corresponding path program 1 times [2023-12-16 06:00:21,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:21,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643787033] [2023-12-16 06:00:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:21,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 06:00:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 06:00:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-16 06:00:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-16 06:00:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-16 06:00:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-16 06:00:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2023-12-16 06:00:21,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:21,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643787033] [2023-12-16 06:00:21,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643787033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:21,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:21,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:00:21,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721258499] [2023-12-16 06:00:21,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:21,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:00:21,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:21,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:00:21,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:00:21,505 INFO L87 Difference]: Start difference. First operand 5147 states and 6673 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-16 06:00:22,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:22,048 INFO L93 Difference]: Finished difference Result 10921 states and 14574 transitions. [2023-12-16 06:00:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:00:22,049 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 298 [2023-12-16 06:00:22,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:22,068 INFO L225 Difference]: With dead ends: 10921 [2023-12-16 06:00:22,068 INFO L226 Difference]: Without dead ends: 6387 [2023-12-16 06:00:22,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:00:22,078 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 178 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:22,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 801 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:00:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6387 states. [2023-12-16 06:00:22,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6387 to 5439. [2023-12-16 06:00:22,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5439 states, 4168 states have (on average 1.3049424184261036) internal successors, (5439), 4296 states have internal predecessors, (5439), 839 states have call successors, (839), 431 states have call predecessors, (839), 431 states have return successors, (839), 719 states have call predecessors, (839), 839 states have call successors, (839) [2023-12-16 06:00:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5439 states to 5439 states and 7117 transitions. [2023-12-16 06:00:22,447 INFO L78 Accepts]: Start accepts. Automaton has 5439 states and 7117 transitions. Word has length 298 [2023-12-16 06:00:22,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:22,448 INFO L495 AbstractCegarLoop]: Abstraction has 5439 states and 7117 transitions. [2023-12-16 06:00:22,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-16 06:00:22,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5439 states and 7117 transitions. [2023-12-16 06:00:22,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-16 06:00:22,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:22,452 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 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, 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, 1, 1] [2023-12-16 06:00:22,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-16 06:00:22,452 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:22,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:22,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1089789335, now seen corresponding path program 1 times [2023-12-16 06:00:22,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:22,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479971668] [2023-12-16 06:00:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:22,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 06:00:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 06:00:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-16 06:00:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-16 06:00:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-16 06:00:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-16 06:00:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2023-12-16 06:00:22,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:22,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479971668] [2023-12-16 06:00:22,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479971668] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:22,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587323396] [2023-12-16 06:00:22,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:22,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:22,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:22,689 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:22,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 06:00:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:22,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 06:00:22,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2023-12-16 06:00:22,973 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:22,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587323396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:22,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:22,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2023-12-16 06:00:22,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385992255] [2023-12-16 06:00:22,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:22,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:00:22,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:22,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:00:22,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2023-12-16 06:00:22,975 INFO L87 Difference]: Start difference. First operand 5439 states and 7117 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-16 06:00:23,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:23,614 INFO L93 Difference]: Finished difference Result 13807 states and 18395 transitions. [2023-12-16 06:00:23,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 06:00:23,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 298 [2023-12-16 06:00:23,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:23,645 INFO L225 Difference]: With dead ends: 13807 [2023-12-16 06:00:23,645 INFO L226 Difference]: Without dead ends: 8877 [2023-12-16 06:00:23,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2023-12-16 06:00:23,657 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 172 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:23,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 2023 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:00:23,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8877 states. [2023-12-16 06:00:24,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8877 to 6567. [2023-12-16 06:00:24,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6567 states, 5028 states have (on average 1.3001193317422435) internal successors, (6537), 5184 states have internal predecessors, (6537), 1015 states have call successors, (1015), 523 states have call predecessors, (1015), 523 states have return successors, (1015), 867 states have call predecessors, (1015), 1015 states have call successors, (1015) [2023-12-16 06:00:24,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6567 states to 6567 states and 8567 transitions. [2023-12-16 06:00:24,056 INFO L78 Accepts]: Start accepts. Automaton has 6567 states and 8567 transitions. Word has length 298 [2023-12-16 06:00:24,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:24,057 INFO L495 AbstractCegarLoop]: Abstraction has 6567 states and 8567 transitions. [2023-12-16 06:00:24,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-16 06:00:24,057 INFO L276 IsEmpty]: Start isEmpty. Operand 6567 states and 8567 transitions. [2023-12-16 06:00:24,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-16 06:00:24,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:24,060 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 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, 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, 1, 1] [2023-12-16 06:00:24,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:24,267 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,SelfDestructingSolverStorable34 [2023-12-16 06:00:24,268 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:24,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:24,268 INFO L85 PathProgramCache]: Analyzing trace with hash -821253223, now seen corresponding path program 1 times [2023-12-16 06:00:24,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:24,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339392078] [2023-12-16 06:00:24,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:24,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 06:00:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 06:00:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-16 06:00:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-16 06:00:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-16 06:00:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-16 06:00:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:24,400 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2023-12-16 06:00:24,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:24,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339392078] [2023-12-16 06:00:24,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339392078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:24,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:24,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:00:24,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755552294] [2023-12-16 06:00:24,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:24,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:24,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:24,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:24,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:24,402 INFO L87 Difference]: Start difference. First operand 6567 states and 8567 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-16 06:00:25,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:25,159 INFO L93 Difference]: Finished difference Result 13453 states and 17644 transitions. [2023-12-16 06:00:25,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 06:00:25,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 298 [2023-12-16 06:00:25,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:25,181 INFO L225 Difference]: With dead ends: 13453 [2023-12-16 06:00:25,181 INFO L226 Difference]: Without dead ends: 7675 [2023-12-16 06:00:25,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:00:25,193 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 311 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:25,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 561 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:00:25,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7675 states. [2023-12-16 06:00:25,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7675 to 6707. [2023-12-16 06:00:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6707 states, 5135 states have (on average 1.308666017526777) internal successors, (6720), 5291 states have internal predecessors, (6720), 1047 states have call successors, (1047), 524 states have call predecessors, (1047), 524 states have return successors, (1047), 899 states have call predecessors, (1047), 1047 states have call successors, (1047) [2023-12-16 06:00:25,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6707 states to 6707 states and 8814 transitions. [2023-12-16 06:00:25,728 INFO L78 Accepts]: Start accepts. Automaton has 6707 states and 8814 transitions. Word has length 298 [2023-12-16 06:00:25,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:25,728 INFO L495 AbstractCegarLoop]: Abstraction has 6707 states and 8814 transitions. [2023-12-16 06:00:25,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-16 06:00:25,729 INFO L276 IsEmpty]: Start isEmpty. Operand 6707 states and 8814 transitions. [2023-12-16 06:00:25,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-16 06:00:25,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:25,732 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 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, 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] [2023-12-16 06:00:25,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-16 06:00:25,733 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:25,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:25,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1012381897, now seen corresponding path program 1 times [2023-12-16 06:00:25,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:25,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066990197] [2023-12-16 06:00:25,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:25,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 06:00:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 06:00:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-16 06:00:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 06:00:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2023-12-16 06:00:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-12-16 06:00:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-12-16 06:00:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2023-12-16 06:00:25,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:25,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066990197] [2023-12-16 06:00:25,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066990197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:25,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:00:25,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:00:25,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882839387] [2023-12-16 06:00:25,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:25,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:25,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:25,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:25,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:25,888 INFO L87 Difference]: Start difference. First operand 6707 states and 8814 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 06:00:26,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:26,752 INFO L93 Difference]: Finished difference Result 11731 states and 15493 transitions. [2023-12-16 06:00:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 06:00:26,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 305 [2023-12-16 06:00:26,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:26,768 INFO L225 Difference]: With dead ends: 11731 [2023-12-16 06:00:26,768 INFO L226 Difference]: Without dead ends: 5817 [2023-12-16 06:00:26,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:00:26,777 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 478 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:26,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 787 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 06:00:26,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5817 states. [2023-12-16 06:00:27,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5817 to 5789. [2023-12-16 06:00:27,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5789 states, 4437 states have (on average 1.2943430245661482) internal successors, (5743), 4569 states have internal predecessors, (5743), 903 states have call successors, (903), 448 states have call predecessors, (903), 448 states have return successors, (903), 771 states have call predecessors, (903), 903 states have call successors, (903) [2023-12-16 06:00:27,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5789 states to 5789 states and 7549 transitions. [2023-12-16 06:00:27,146 INFO L78 Accepts]: Start accepts. Automaton has 5789 states and 7549 transitions. Word has length 305 [2023-12-16 06:00:27,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:27,146 INFO L495 AbstractCegarLoop]: Abstraction has 5789 states and 7549 transitions. [2023-12-16 06:00:27,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-16 06:00:27,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5789 states and 7549 transitions. [2023-12-16 06:00:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-12-16 06:00:27,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:27,153 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 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, 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] [2023-12-16 06:00:27,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-16 06:00:27,154 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:27,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:27,154 INFO L85 PathProgramCache]: Analyzing trace with hash 962094426, now seen corresponding path program 1 times [2023-12-16 06:00:27,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:27,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415427918] [2023-12-16 06:00:27,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:27,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 06:00:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 06:00:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-16 06:00:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 06:00:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2023-12-16 06:00:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-12-16 06:00:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-12-16 06:00:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2023-12-16 06:00:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-12-16 06:00:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2023-12-16 06:00:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-12-16 06:00:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2023-12-16 06:00:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 40 proven. 186 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2023-12-16 06:00:27,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415427918] [2023-12-16 06:00:27,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415427918] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986828270] [2023-12-16 06:00:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:27,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:27,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:27,820 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:27,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 06:00:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:28,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 06:00:28,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 198 proven. 108 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-16 06:00:28,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:00:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 33 proven. 71 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2023-12-16 06:00:28,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986828270] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:00:28,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:00:28,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 30 [2023-12-16 06:00:28,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58960338] [2023-12-16 06:00:28,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:00:28,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-16 06:00:28,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:28,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-16 06:00:28,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=789, Unknown=0, NotChecked=0, Total=870 [2023-12-16 06:00:28,806 INFO L87 Difference]: Start difference. First operand 5789 states and 7549 transitions. Second operand has 30 states, 30 states have (on average 8.533333333333333) internal successors, (256), 24 states have internal predecessors, (256), 7 states have call successors, (62), 9 states have call predecessors, (62), 16 states have return successors, (63), 11 states have call predecessors, (63), 7 states have call successors, (63) [2023-12-16 06:00:36,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:36,937 INFO L93 Difference]: Finished difference Result 31228 states and 42308 transitions. [2023-12-16 06:00:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-16 06:00:36,937 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.533333333333333) internal successors, (256), 24 states have internal predecessors, (256), 7 states have call successors, (62), 9 states have call predecessors, (62), 16 states have return successors, (63), 11 states have call predecessors, (63), 7 states have call successors, (63) Word has length 348 [2023-12-16 06:00:36,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:37,026 INFO L225 Difference]: With dead ends: 31228 [2023-12-16 06:00:37,027 INFO L226 Difference]: Without dead ends: 25770 [2023-12-16 06:00:37,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 751 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3463 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1350, Invalid=11306, Unknown=0, NotChecked=0, Total=12656 [2023-12-16 06:00:37,046 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 4095 mSDsluCounter, 10813 mSDsCounter, 0 mSdLazyCounter, 8053 mSolverCounterSat, 1611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 11551 SdHoareTripleChecker+Invalid, 9664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1611 IncrementalHoareTripleChecker+Valid, 8053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:37,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4095 Valid, 11551 Invalid, 9664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1611 Valid, 8053 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-16 06:00:37,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25770 states. [2023-12-16 06:00:38,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25770 to 17204. [2023-12-16 06:00:38,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17204 states, 13106 states have (on average 1.2865862963528154) internal successors, (16862), 13370 states have internal predecessors, (16862), 2760 states have call successors, (2760), 1207 states have call predecessors, (2760), 1337 states have return successors, (3004), 2626 states have call predecessors, (3004), 2760 states have call successors, (3004) [2023-12-16 06:00:38,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17204 states to 17204 states and 22626 transitions. [2023-12-16 06:00:38,586 INFO L78 Accepts]: Start accepts. Automaton has 17204 states and 22626 transitions. Word has length 348 [2023-12-16 06:00:38,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:38,587 INFO L495 AbstractCegarLoop]: Abstraction has 17204 states and 22626 transitions. [2023-12-16 06:00:38,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.533333333333333) internal successors, (256), 24 states have internal predecessors, (256), 7 states have call successors, (62), 9 states have call predecessors, (62), 16 states have return successors, (63), 11 states have call predecessors, (63), 7 states have call successors, (63) [2023-12-16 06:00:38,587 INFO L276 IsEmpty]: Start isEmpty. Operand 17204 states and 22626 transitions. [2023-12-16 06:00:38,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-12-16 06:00:38,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:38,606 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:38,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:38,812 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,SelfDestructingSolverStorable37 [2023-12-16 06:00:38,812 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:38,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:38,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1842134330, now seen corresponding path program 1 times [2023-12-16 06:00:38,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:38,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189370336] [2023-12-16 06:00:38,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:38,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 06:00:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 06:00:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-16 06:00:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 06:00:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2023-12-16 06:00:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-12-16 06:00:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-12-16 06:00:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2023-12-16 06:00:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-12-16 06:00:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2023-12-16 06:00:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-12-16 06:00:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2023-12-16 06:00:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 824 trivial. 0 not checked. [2023-12-16 06:00:38,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:38,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189370336] [2023-12-16 06:00:38,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189370336] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:38,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895627787] [2023-12-16 06:00:38,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:38,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:38,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:38,952 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:38,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 06:00:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:39,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 06:00:39,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:39,231 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2023-12-16 06:00:39,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:39,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895627787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:39,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:39,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-16 06:00:39,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031302950] [2023-12-16 06:00:39,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:39,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:39,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:39,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:39,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:39,233 INFO L87 Difference]: Start difference. First operand 17204 states and 22626 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, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-16 06:00:40,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:40,468 INFO L93 Difference]: Finished difference Result 34732 states and 45698 transitions. [2023-12-16 06:00:40,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:40,471 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, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 348 [2023-12-16 06:00:40,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:40,524 INFO L225 Difference]: With dead ends: 34732 [2023-12-16 06:00:40,525 INFO L226 Difference]: Without dead ends: 16708 [2023-12-16 06:00:40,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:00:40,554 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 40 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:40,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 648 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16708 states. [2023-12-16 06:00:41,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16708 to 16708. [2023-12-16 06:00:41,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16708 states, 12738 states have (on average 1.252315905165646) internal successors, (15952), 12994 states have internal predecessors, (15952), 2760 states have call successors, (2760), 1207 states have call predecessors, (2760), 1209 states have return successors, (2764), 2506 states have call predecessors, (2764), 2760 states have call successors, (2764) [2023-12-16 06:00:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16708 states to 16708 states and 21476 transitions. [2023-12-16 06:00:41,933 INFO L78 Accepts]: Start accepts. Automaton has 16708 states and 21476 transitions. Word has length 348 [2023-12-16 06:00:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:41,933 INFO L495 AbstractCegarLoop]: Abstraction has 16708 states and 21476 transitions. [2023-12-16 06:00:41,933 INFO L496 AbstractCegarLoop]: INTERPOLANT 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, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-16 06:00:41,933 INFO L276 IsEmpty]: Start isEmpty. Operand 16708 states and 21476 transitions. [2023-12-16 06:00:41,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-16 06:00:41,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:41,954 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:41,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-16 06:00:42,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:42,158 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:42,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:42,158 INFO L85 PathProgramCache]: Analyzing trace with hash -277793081, now seen corresponding path program 1 times [2023-12-16 06:00:42,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:42,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453205224] [2023-12-16 06:00:42,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:42,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 06:00:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-16 06:00:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-16 06:00:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 06:00:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-16 06:00:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-16 06:00:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-16 06:00:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-12-16 06:00:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-12-16 06:00:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-16 06:00:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-12-16 06:00:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-16 06:00:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-16 06:00:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-12-16 06:00:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-12-16 06:00:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-12-16 06:00:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-12-16 06:00:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2023-12-16 06:00:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-12-16 06:00:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2023-12-16 06:00:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-12-16 06:00:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-12-16 06:00:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2023-12-16 06:00:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2023-12-16 06:00:42,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:42,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453205224] [2023-12-16 06:00:42,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453205224] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:42,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584623101] [2023-12-16 06:00:42,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:42,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:42,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:42,292 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:42,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 06:00:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:42,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 06:00:42,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2023-12-16 06:00:42,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:00:42,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584623101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:00:42,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:00:42,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-16 06:00:42,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283352377] [2023-12-16 06:00:42,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:42,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:00:42,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:42,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:00:42,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:00:42,509 INFO L87 Difference]: Start difference. First operand 16708 states and 21476 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-16 06:00:43,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:43,657 INFO L93 Difference]: Finished difference Result 32977 states and 42460 transitions. [2023-12-16 06:00:43,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:43,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 361 [2023-12-16 06:00:43,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:43,711 INFO L225 Difference]: With dead ends: 32977 [2023-12-16 06:00:43,711 INFO L226 Difference]: Without dead ends: 16269 [2023-12-16 06:00:43,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:00:43,740 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 28 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:43,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 655 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:43,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16269 states. [2023-12-16 06:00:45,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16269 to 16269. [2023-12-16 06:00:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16269 states, 12381 states have (on average 1.2556336321783377) internal successors, (15546), 12637 states have internal predecessors, (15546), 2715 states have call successors, (2715), 1172 states have call predecessors, (2715), 1172 states have return successors, (2715), 2459 states have call predecessors, (2715), 2715 states have call successors, (2715) [2023-12-16 06:00:45,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16269 states to 16269 states and 20976 transitions. [2023-12-16 06:00:45,117 INFO L78 Accepts]: Start accepts. Automaton has 16269 states and 20976 transitions. Word has length 361 [2023-12-16 06:00:45,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:45,118 INFO L495 AbstractCegarLoop]: Abstraction has 16269 states and 20976 transitions. [2023-12-16 06:00:45,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-16 06:00:45,118 INFO L276 IsEmpty]: Start isEmpty. Operand 16269 states and 20976 transitions. [2023-12-16 06:00:45,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-12-16 06:00:45,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:45,139 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:00:45,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-16 06:00:45,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-16 06:00:45,340 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:45,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:45,340 INFO L85 PathProgramCache]: Analyzing trace with hash 177326682, now seen corresponding path program 1 times [2023-12-16 06:00:45,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:45,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462948284] [2023-12-16 06:00:45,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:45,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-12-16 06:00:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-16 06:00:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-16 06:00:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-16 06:00:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-16 06:00:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-16 06:00:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-12-16 06:00:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2023-12-16 06:00:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-12-16 06:00:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-12-16 06:00:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-12-16 06:00:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-12-16 06:00:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-12-16 06:00:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2023-12-16 06:00:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2023-12-16 06:00:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:45,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 50 proven. 51 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2023-12-16 06:00:45,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:45,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462948284] [2023-12-16 06:00:45,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462948284] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:45,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961518996] [2023-12-16 06:00:45,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:45,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:45,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:45,974 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:45,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 06:00:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:46,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-16 06:00:46,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 274 proven. 263 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2023-12-16 06:00:46,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:00:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2023-12-16 06:00:46,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961518996] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:46,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:00:46,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 17] total 31 [2023-12-16 06:00:46,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004140042] [2023-12-16 06:00:46,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:00:46,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:00:46,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:46,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:00:46,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2023-12-16 06:00:46,796 INFO L87 Difference]: Start difference. First operand 16269 states and 20976 transitions. Second operand has 5 states, 4 states have (on average 27.0) internal successors, (108), 5 states have internal predecessors, (108), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-16 06:00:47,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:00:47,864 INFO L93 Difference]: Finished difference Result 29962 states and 38739 transitions. [2023-12-16 06:00:47,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:00:47,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 27.0) internal successors, (108), 5 states have internal predecessors, (108), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) Word has length 368 [2023-12-16 06:00:47,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:00:47,920 INFO L225 Difference]: With dead ends: 29962 [2023-12-16 06:00:47,920 INFO L226 Difference]: Without dead ends: 14485 [2023-12-16 06:00:47,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2023-12-16 06:00:47,942 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 0 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:47,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 929 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:00:47,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14485 states. [2023-12-16 06:00:49,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14485 to 14485. [2023-12-16 06:00:49,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14485 states, 11022 states have (on average 1.2541281074215207) internal successors, (13823), 11254 states have internal predecessors, (13823), 2415 states have call successors, (2415), 1047 states have call predecessors, (2415), 1047 states have return successors, (2415), 2183 states have call predecessors, (2415), 2415 states have call successors, (2415) [2023-12-16 06:00:49,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14485 states to 14485 states and 18653 transitions. [2023-12-16 06:00:49,072 INFO L78 Accepts]: Start accepts. Automaton has 14485 states and 18653 transitions. Word has length 368 [2023-12-16 06:00:49,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:00:49,073 INFO L495 AbstractCegarLoop]: Abstraction has 14485 states and 18653 transitions. [2023-12-16 06:00:49,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 27.0) internal successors, (108), 5 states have internal predecessors, (108), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-16 06:00:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 14485 states and 18653 transitions. [2023-12-16 06:00:49,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-12-16 06:00:49,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:00:49,092 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 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, 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] [2023-12-16 06:00:49,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:49,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:49,293 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:00:49,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:00:49,294 INFO L85 PathProgramCache]: Analyzing trace with hash -734917806, now seen corresponding path program 1 times [2023-12-16 06:00:49,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:00:49,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629990652] [2023-12-16 06:00:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:49,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:00:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 06:00:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 06:00:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 06:00:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-16 06:00:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 06:00:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-16 06:00:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-16 06:00:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 06:00:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 06:00:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-16 06:00:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 06:00:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 06:00:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 06:00:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 06:00:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 06:00:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-16 06:00:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-16 06:00:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-16 06:00:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-16 06:00:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-12-16 06:00:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-16 06:00:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:49,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-16 06:00:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:50,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-16 06:00:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:50,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-12-16 06:00:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:50,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-12-16 06:00:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:50,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-12-16 06:00:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:50,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-12-16 06:00:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:50,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-12-16 06:00:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:50,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2023-12-16 06:00:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:50,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-12-16 06:00:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:50,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2023-12-16 06:00:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:50,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-12-16 06:00:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:50,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-12-16 06:00:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2023-12-16 06:00:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:50,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2023-12-16 06:00:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:50,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2023-12-16 06:00:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2023-12-16 06:00:50,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:00:50,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629990652] [2023-12-16 06:00:50,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629990652] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:00:50,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422451334] [2023-12-16 06:00:50,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:00:50,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:50,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:00:50,034 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:00:50,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-16 06:00:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:00:50,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-16 06:00:50,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:00:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 497 proven. 239 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2023-12-16 06:00:51,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:00:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 107 proven. 194 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2023-12-16 06:00:52,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422451334] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:00:52,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:00:52,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 27, 22] total 52 [2023-12-16 06:00:52,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170352129] [2023-12-16 06:00:52,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:00:52,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-16 06:00:52,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:00:52,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-16 06:00:52,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2434, Unknown=0, NotChecked=0, Total=2652 [2023-12-16 06:00:52,298 INFO L87 Difference]: Start difference. First operand 14485 states and 18653 transitions. Second operand has 52 states, 52 states have (on average 6.788461538461538) internal successors, (353), 45 states have internal predecessors, (353), 18 states have call successors, (78), 14 states have call predecessors, (78), 20 states have return successors, (82), 23 states have call predecessors, (82), 18 states have call successors, (82) Received shutdown request... [2023-12-16 06:00:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-16 06:00:56,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2739 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1453, Invalid=10537, Unknown=0, NotChecked=0, Total=11990 [2023-12-16 06:00:56,864 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 1917 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 3933 mSolverCounterSat, 657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 4590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 3933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 06:00:56,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1917 Valid, 2738 Invalid, 4590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [657 Valid, 3933 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 06:00:56,865 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:00:56,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-16 06:00:56,872 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:00:56,872 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:00:57,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:00:57,066 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (14485states) and FLOYD_HOARE automaton (currently 60 states, 52 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 110 known predicates. [2023-12-16 06:00:57,069 INFO L445 BasicCegarLoop]: Path program histogram: [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] [2023-12-16 06:00:57,071 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:00:57,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:00:57 BoogieIcfgContainer [2023-12-16 06:00:57,072 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:00:57,072 INFO L158 Benchmark]: Toolchain (without parser) took 54926.79ms. Allocated memory was 247.5MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 194.5MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-16 06:00:57,072 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 192.9MB. Free memory is still 142.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:00:57,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.22ms. Allocated memory is still 247.5MB. Free memory was 194.2MB in the beginning and 177.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 06:00:57,072 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.04ms. Allocated memory is still 247.5MB. Free memory was 177.4MB in the beginning and 174.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:00:57,072 INFO L158 Benchmark]: Boogie Preprocessor took 46.97ms. Allocated memory is still 247.5MB. Free memory was 174.3MB in the beginning and 170.6MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:00:57,073 INFO L158 Benchmark]: RCFGBuilder took 666.87ms. Allocated memory is still 247.5MB. Free memory was 170.6MB in the beginning and 189.6MB in the end (delta: -19.0MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. [2023-12-16 06:00:57,073 INFO L158 Benchmark]: TraceAbstraction took 53850.95ms. Allocated memory was 247.5MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 188.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-16 06:00:57,073 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 192.9MB. Free memory is still 142.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 303.22ms. Allocated memory is still 247.5MB. Free memory was 194.2MB in the beginning and 177.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.04ms. Allocated memory is still 247.5MB. Free memory was 177.4MB in the beginning and 174.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.97ms. Allocated memory is still 247.5MB. Free memory was 174.3MB in the beginning and 170.6MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 666.87ms. Allocated memory is still 247.5MB. Free memory was 170.6MB in the beginning and 189.6MB in the end (delta: -19.0MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. * TraceAbstraction took 53850.95ms. Allocated memory was 247.5MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 188.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.0GB. 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: 541]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 541). Cancelled while NwaCegarLoop was constructing difference of abstraction (14485states) and FLOYD_HOARE automaton (currently 60 states, 52 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 110 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 175 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.8s, OverallIterations: 42, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.2s, AutomataDifference: 26.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11195 SdHoareTripleChecker+Valid, 10.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10859 mSDsluCounter, 52114 SdHoareTripleChecker+Invalid, 9.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40787 mSDsCounter, 3204 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20248 IncrementalHoareTripleChecker+Invalid, 23452 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3204 mSolverCounterUnsat, 11327 mSDtfsCounter, 20248 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8321 GetRequests, 7816 SyntacticMatches, 7 SemanticMatches, 497 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6750 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17204occurred in iteration=38, InterpolantAutomatonStates: 353, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.0s AutomataMinimizationTime, 41 MinimizatonAttempts, 15820 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 13400 NumberOfCodeBlocks, 13400 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 14925 ConstructedInterpolants, 0 QuantifiedInterpolants, 26735 SizeOfPredicates, 50 NumberOfNonLiveVariables, 15596 ConjunctsInSsa, 259 ConjunctsInUnsatCore, 65 InterpolantComputations, 38 PerfectInterpolantSequences, 35806/37245 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