/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:10:07,947 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:10:08,021 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:10:08,026 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:10:08,027 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:10:08,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:10:08,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:10:08,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:10:08,053 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:10:08,056 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:10:08,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:10:08,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:10:08,057 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:10:08,058 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:10:08,058 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:10:08,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:10:08,058 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:10:08,058 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:10:08,058 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:10:08,059 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:10:08,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:10:08,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:10:08,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:10:08,059 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:10:08,059 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:10:08,060 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:10:08,060 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:10:08,060 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:10:08,060 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:10:08,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:10:08,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:10:08,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:10:08,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:10:08,061 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:10:08,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:10:08,062 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:10:08,062 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:10:08,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:10:08,062 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:10:08,062 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:10:08,062 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:10:08,062 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:10:08,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:10:08,063 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:10:08,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:10:08,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:10:08,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:10:08,284 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:10:08,284 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:10:08,285 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.c [2023-12-15 23:10:09,372 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:10:09,589 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:10:09,589 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.c [2023-12-15 23:10:09,598 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10308bab/ec103fd12e084968864c3f36864b8c94/FLAG7a6e557d8 [2023-12-15 23:10:09,609 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10308bab/ec103fd12e084968864c3f36864b8c94 [2023-12-15 23:10:09,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:10:09,612 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:10:09,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:10:09,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:10:09,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:10:09,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:10:09" (1/1) ... [2023-12-15 23:10:09,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c9ed62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:09, skipping insertion in model container [2023-12-15 23:10:09,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:10:09" (1/1) ... [2023-12-15 23:10:09,665 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:10:09,810 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.2.ufo.BOUNDED-10.pals.c[11857,11870] [2023-12-15 23:10:09,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:10:09,821 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:10:09,856 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.2.ufo.BOUNDED-10.pals.c[11857,11870] [2023-12-15 23:10:09,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:10:09,868 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:10:09,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:09 WrapperNode [2023-12-15 23:10:09,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:10:09,870 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:10:09,870 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:10:09,870 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:10:09,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:09" (1/1) ... [2023-12-15 23:10:09,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:09" (1/1) ... [2023-12-15 23:10:09,924 INFO L138 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 409 [2023-12-15 23:10:09,924 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:10:09,925 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:10:09,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:10:09,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:10:09,933 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:09" (1/1) ... [2023-12-15 23:10:09,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:09" (1/1) ... [2023-12-15 23:10:09,935 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:09" (1/1) ... [2023-12-15 23:10:09,969 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]. [2023-12-15 23:10:09,969 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:09" (1/1) ... [2023-12-15 23:10:09,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:09" (1/1) ... [2023-12-15 23:10:09,985 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:09" (1/1) ... [2023-12-15 23:10:09,988 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:09" (1/1) ... [2023-12-15 23:10:09,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:09" (1/1) ... [2023-12-15 23:10:09,991 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:09" (1/1) ... [2023-12-15 23:10:10,011 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:10:10,012 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:10:10,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:10:10,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:10:10,012 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:09" (1/1) ... [2023-12-15 23:10:10,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:10:10,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:10,052 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) [2023-12-15 23:10:10,063 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 [2023-12-15 23:10:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:10:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2023-12-15 23:10:10,081 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2023-12-15 23:10:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-12-15 23:10:10,082 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-12-15 23:10:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2023-12-15 23:10:10,082 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2023-12-15 23:10:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2023-12-15 23:10:10,082 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2023-12-15 23:10:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2023-12-15 23:10:10,082 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2023-12-15 23:10:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:10:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:10:10,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:10:10,155 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:10:10,157 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:10:10,491 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:10:10,514 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:10:10,515 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-15 23:10:10,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:10:10 BoogieIcfgContainer [2023-12-15 23:10:10,515 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:10:10,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:10:10,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:10:10,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:10:10,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:10:09" (1/3) ... [2023-12-15 23:10:10,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196e7bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:10:10, skipping insertion in model container [2023-12-15 23:10:10,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:09" (2/3) ... [2023-12-15 23:10:10,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196e7bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:10:10, skipping insertion in model container [2023-12-15 23:10:10,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:10:10" (3/3) ... [2023-12-15 23:10:10,522 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.c [2023-12-15 23:10:10,535 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:10:10,535 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:10:10,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:10:10,593 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;@7d7333, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:10:10,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:10:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 131 states have (on average 1.618320610687023) internal successors, (212), 135 states have internal predecessors, (212), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-15 23:10:10,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-15 23:10:10,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:10,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:10,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:10,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:10,618 INFO L85 PathProgramCache]: Analyzing trace with hash 469496012, now seen corresponding path program 1 times [2023-12-15 23:10:10,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:10,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149075971] [2023-12-15 23:10:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:10,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:10:10,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:10,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149075971] [2023-12-15 23:10:10,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149075971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:10,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:10,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:10,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072647355] [2023-12-15 23:10:10,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:10,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:10,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:10,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:10,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:10,861 INFO L87 Difference]: Start difference. First operand has 170 states, 131 states have (on average 1.618320610687023) internal successors, (212), 135 states have internal predecessors, (212), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) 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) [2023-12-15 23:10:10,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:10,976 INFO L93 Difference]: Finished difference Result 346 states and 596 transitions. [2023-12-15 23:10:10,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:10,978 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 [2023-12-15 23:10:10,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:10,985 INFO L225 Difference]: With dead ends: 346 [2023-12-15 23:10:10,985 INFO L226 Difference]: Without dead ends: 176 [2023-12-15 23:10:10,989 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 [2023-12-15 23:10:10,994 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 18 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:10,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 763 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:11,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-15 23:10:11,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2023-12-15 23:10:11,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 135 states have (on average 1.548148148148148) internal successors, (209), 138 states have internal predecessors, (209), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-15 23:10:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 273 transitions. [2023-12-15 23:10:11,040 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 273 transitions. Word has length 14 [2023-12-15 23:10:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:11,040 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 273 transitions. [2023-12-15 23:10:11,041 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) [2023-12-15 23:10:11,041 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 273 transitions. [2023-12-15 23:10:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-15 23:10:11,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:11,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:11,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:10:11,043 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:11,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:11,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2116359622, now seen corresponding path program 1 times [2023-12-15 23:10:11,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:11,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196858726] [2023-12-15 23:10:11,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:11,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:10:11,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:11,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196858726] [2023-12-15 23:10:11,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196858726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:11,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:11,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:11,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229640045] [2023-12-15 23:10:11,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:11,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:11,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:11,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:11,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:11,114 INFO L87 Difference]: Start difference. First operand 174 states and 273 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) [2023-12-15 23:10:11,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:11,183 INFO L93 Difference]: Finished difference Result 362 states and 570 transitions. [2023-12-15 23:10:11,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:11,186 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 [2023-12-15 23:10:11,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:11,189 INFO L225 Difference]: With dead ends: 362 [2023-12-15 23:10:11,189 INFO L226 Difference]: Without dead ends: 190 [2023-12-15 23:10:11,191 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 [2023-12-15 23:10:11,192 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 25 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 780 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 [2023-12-15 23:10:11,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 780 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:11,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-15 23:10:11,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2023-12-15 23:10:11,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 146 states have (on average 1.5273972602739727) internal successors, (223), 149 states have internal predecessors, (223), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-15 23:10:11,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 289 transitions. [2023-12-15 23:10:11,205 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 289 transitions. Word has length 15 [2023-12-15 23:10:11,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:11,205 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 289 transitions. [2023-12-15 23:10:11,206 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) [2023-12-15 23:10:11,206 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 289 transitions. [2023-12-15 23:10:11,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-15 23:10:11,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:11,207 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] [2023-12-15 23:10:11,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:10:11,207 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:11,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:11,207 INFO L85 PathProgramCache]: Analyzing trace with hash -171942147, now seen corresponding path program 1 times [2023-12-15 23:10:11,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:11,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978733499] [2023-12-15 23:10:11,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:11,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:10:11,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:11,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978733499] [2023-12-15 23:10:11,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978733499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:11,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:11,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:10:11,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642682800] [2023-12-15 23:10:11,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:11,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:10:11,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:11,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:10:11,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:10:11,261 INFO L87 Difference]: Start difference. First operand 187 states and 289 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 23:10:11,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:11,289 INFO L93 Difference]: Finished difference Result 394 states and 616 transitions. [2023-12-15 23:10:11,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:10:11,291 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-12-15 23:10:11,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:11,298 INFO L225 Difference]: With dead ends: 394 [2023-12-15 23:10:11,301 INFO L226 Difference]: Without dead ends: 216 [2023-12-15 23:10:11,302 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 [2023-12-15 23:10:11,303 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 22 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 528 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 [2023-12-15 23:10:11,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 528 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:11,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-12-15 23:10:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 189. [2023-12-15 23:10:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.5202702702702702) internal successors, (225), 151 states have internal predecessors, (225), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-15 23:10:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 291 transitions. [2023-12-15 23:10:11,316 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 291 transitions. Word has length 22 [2023-12-15 23:10:11,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:11,316 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 291 transitions. [2023-12-15 23:10:11,316 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 23:10:11,317 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 291 transitions. [2023-12-15 23:10:11,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-15 23:10:11,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:11,318 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] [2023-12-15 23:10:11,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:10:11,318 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:11,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:11,318 INFO L85 PathProgramCache]: Analyzing trace with hash 132588398, now seen corresponding path program 1 times [2023-12-15 23:10:11,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:11,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818502628] [2023-12-15 23:10:11,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:11,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:10:11,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:11,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818502628] [2023-12-15 23:10:11,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818502628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:11,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:11,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:11,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609254394] [2023-12-15 23:10:11,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:11,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:11,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:11,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:11,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:11,383 INFO L87 Difference]: Start difference. First operand 189 states and 291 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 23:10:11,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:11,430 INFO L93 Difference]: Finished difference Result 423 states and 668 transitions. [2023-12-15 23:10:11,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:11,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-12-15 23:10:11,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:11,433 INFO L225 Difference]: With dead ends: 423 [2023-12-15 23:10:11,433 INFO L226 Difference]: Without dead ends: 284 [2023-12-15 23:10:11,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:11,441 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 117 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:11,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 776 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:11,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-15 23:10:11,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 189. [2023-12-15 23:10:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.4932432432432432) internal successors, (221), 151 states have internal predecessors, (221), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-15 23:10:11,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 287 transitions. [2023-12-15 23:10:11,460 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 287 transitions. Word has length 30 [2023-12-15 23:10:11,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:11,463 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 287 transitions. [2023-12-15 23:10:11,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 23:10:11,464 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 287 transitions. [2023-12-15 23:10:11,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-15 23:10:11,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:11,466 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] [2023-12-15 23:10:11,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:10:11,466 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:11,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:11,466 INFO L85 PathProgramCache]: Analyzing trace with hash -477731963, now seen corresponding path program 1 times [2023-12-15 23:10:11,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:11,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863634284] [2023-12-15 23:10:11,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:11,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:10:11,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:11,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863634284] [2023-12-15 23:10:11,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863634284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:11,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:11,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:10:11,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877821137] [2023-12-15 23:10:11,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:11,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:10:11,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:11,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:10:11,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:11,580 INFO L87 Difference]: Start difference. First operand 189 states and 287 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) [2023-12-15 23:10:11,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:11,611 INFO L93 Difference]: Finished difference Result 369 states and 564 transitions. [2023-12-15 23:10:11,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:11,611 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 [2023-12-15 23:10:11,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:11,614 INFO L225 Difference]: With dead ends: 369 [2023-12-15 23:10:11,614 INFO L226 Difference]: Without dead ends: 191 [2023-12-15 23:10:11,615 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 [2023-12-15 23:10:11,616 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1032 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 [2023-12-15 23:10:11,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1032 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:11,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-12-15 23:10:11,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2023-12-15 23:10:11,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.4864864864864864) internal successors, (220), 151 states have internal predecessors, (220), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-15 23:10:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 286 transitions. [2023-12-15 23:10:11,641 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 286 transitions. Word has length 31 [2023-12-15 23:10:11,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:11,641 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 286 transitions. [2023-12-15 23:10:11,642 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) [2023-12-15 23:10:11,642 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 286 transitions. [2023-12-15 23:10:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-15 23:10:11,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:11,645 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] [2023-12-15 23:10:11,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:10:11,645 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:11,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:11,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1201448020, now seen corresponding path program 1 times [2023-12-15 23:10:11,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:11,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077257001] [2023-12-15 23:10:11,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:11,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:10:11,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:11,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077257001] [2023-12-15 23:10:11,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077257001] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:11,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689395972] [2023-12-15 23:10:11,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:11,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:11,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:11,754 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) [2023-12-15 23:10:11,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 23:10:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 23:10:11,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:11,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:10:11,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:10:11,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:10:11,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689395972] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:10:11,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:10:11,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-12-15 23:10:11,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150020946] [2023-12-15 23:10:11,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:10:11,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:10:11,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:11,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:10:11,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:11,939 INFO L87 Difference]: Start difference. First operand 189 states and 286 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) [2023-12-15 23:10:11,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:11,976 INFO L93 Difference]: Finished difference Result 427 states and 660 transitions. [2023-12-15 23:10:11,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:11,976 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 [2023-12-15 23:10:11,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:11,979 INFO L225 Difference]: With dead ends: 427 [2023-12-15 23:10:11,979 INFO L226 Difference]: Without dead ends: 248 [2023-12-15 23:10:11,980 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 [2023-12-15 23:10:11,980 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 67 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:11,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 782 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:11,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-15 23:10:11,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 242. [2023-12-15 23:10:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 191 states have (on average 1.4607329842931938) internal successors, (279), 194 states have internal predecessors, (279), 43 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-15 23:10:11,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 365 transitions. [2023-12-15 23:10:11,994 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 365 transitions. Word has length 34 [2023-12-15 23:10:11,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:11,994 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 365 transitions. [2023-12-15 23:10:11,994 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) [2023-12-15 23:10:11,995 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 365 transitions. [2023-12-15 23:10:11,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-15 23:10:11,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:11,997 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] [2023-12-15 23:10:12,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 23:10:12,202 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 [2023-12-15 23:10:12,202 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:12,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:12,203 INFO L85 PathProgramCache]: Analyzing trace with hash 585611028, now seen corresponding path program 2 times [2023-12-15 23:10:12,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:12,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411724525] [2023-12-15 23:10:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:12,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-15 23:10:12,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:12,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411724525] [2023-12-15 23:10:12,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411724525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:12,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:12,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:12,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333720405] [2023-12-15 23:10:12,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:12,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:12,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:12,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:12,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:12,294 INFO L87 Difference]: Start difference. First operand 242 states and 365 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) [2023-12-15 23:10:12,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:12,330 INFO L93 Difference]: Finished difference Result 465 states and 721 transitions. [2023-12-15 23:10:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:12,331 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 [2023-12-15 23:10:12,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:12,333 INFO L225 Difference]: With dead ends: 465 [2023-12-15 23:10:12,333 INFO L226 Difference]: Without dead ends: 251 [2023-12-15 23:10:12,334 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 [2023-12-15 23:10:12,335 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 19 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 759 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 [2023-12-15 23:10:12,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 759 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:12,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-15 23:10:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2023-12-15 23:10:12,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 197 states have (on average 1.4568527918781726) internal successors, (287), 200 states have internal predecessors, (287), 43 states have call successors, (43), 8 states have call predecessors, (43), 8 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-15 23:10:12,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 373 transitions. [2023-12-15 23:10:12,348 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 373 transitions. Word has length 56 [2023-12-15 23:10:12,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:12,348 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 373 transitions. [2023-12-15 23:10:12,348 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) [2023-12-15 23:10:12,349 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 373 transitions. [2023-12-15 23:10:12,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-15 23:10:12,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:12,349 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] [2023-12-15 23:10:12,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:10:12,350 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:12,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:12,350 INFO L85 PathProgramCache]: Analyzing trace with hash 173699267, now seen corresponding path program 1 times [2023-12-15 23:10:12,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:12,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207748054] [2023-12-15 23:10:12,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:12,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,409 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-15 23:10:12,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:12,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207748054] [2023-12-15 23:10:12,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207748054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:12,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:12,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:12,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368727998] [2023-12-15 23:10:12,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:12,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:12,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:12,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:12,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:12,411 INFO L87 Difference]: Start difference. First operand 249 states and 373 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) [2023-12-15 23:10:12,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:12,460 INFO L93 Difference]: Finished difference Result 509 states and 773 transitions. [2023-12-15 23:10:12,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:12,461 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 [2023-12-15 23:10:12,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:12,462 INFO L225 Difference]: With dead ends: 509 [2023-12-15 23:10:12,463 INFO L226 Difference]: Without dead ends: 288 [2023-12-15 23:10:12,463 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 [2023-12-15 23:10:12,464 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 24 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 772 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 [2023-12-15 23:10:12,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 772 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:12,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-12-15 23:10:12,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 285. [2023-12-15 23:10:12,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 229 states have (on average 1.4148471615720524) internal successors, (324), 232 states have internal predecessors, (324), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-15 23:10:12,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 416 transitions. [2023-12-15 23:10:12,478 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 416 transitions. Word has length 56 [2023-12-15 23:10:12,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:12,478 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 416 transitions. [2023-12-15 23:10:12,478 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) [2023-12-15 23:10:12,479 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 416 transitions. [2023-12-15 23:10:12,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 23:10:12,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:12,479 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] [2023-12-15 23:10:12,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:10:12,480 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:12,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:12,480 INFO L85 PathProgramCache]: Analyzing trace with hash 96021924, now seen corresponding path program 1 times [2023-12-15 23:10:12,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:12,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182539757] [2023-12-15 23:10:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:12,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-15 23:10:12,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:12,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182539757] [2023-12-15 23:10:12,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182539757] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:12,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:12,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:10:12,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144571725] [2023-12-15 23:10:12,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:12,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:10:12,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:12,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:10:12,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:12,571 INFO L87 Difference]: Start difference. First operand 285 states and 416 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) [2023-12-15 23:10:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:12,601 INFO L93 Difference]: Finished difference Result 520 states and 772 transitions. [2023-12-15 23:10:12,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:12,601 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 [2023-12-15 23:10:12,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:12,604 INFO L225 Difference]: With dead ends: 520 [2023-12-15 23:10:12,604 INFO L226 Difference]: Without dead ends: 287 [2023-12-15 23:10:12,605 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 [2023-12-15 23:10:12,606 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1031 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 [2023-12-15 23:10:12,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1031 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-15 23:10:12,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2023-12-15 23:10:12,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 229 states have (on average 1.4017467248908297) internal successors, (321), 232 states have internal predecessors, (321), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-15 23:10:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 413 transitions. [2023-12-15 23:10:12,617 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 413 transitions. Word has length 74 [2023-12-15 23:10:12,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:12,618 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 413 transitions. [2023-12-15 23:10:12,618 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) [2023-12-15 23:10:12,618 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 413 transitions. [2023-12-15 23:10:12,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-15 23:10:12,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:12,619 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] [2023-12-15 23:10:12,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:10:12,619 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:12,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:12,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2111454381, now seen corresponding path program 1 times [2023-12-15 23:10:12,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:12,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709789911] [2023-12-15 23:10:12,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:12,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,712 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-15 23:10:12,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:12,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709789911] [2023-12-15 23:10:12,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709789911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:12,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:12,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:12,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909988126] [2023-12-15 23:10:12,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:12,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:12,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:12,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:12,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:12,713 INFO L87 Difference]: Start difference. First operand 285 states and 413 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) [2023-12-15 23:10:12,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:12,760 INFO L93 Difference]: Finished difference Result 557 states and 828 transitions. [2023-12-15 23:10:12,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:12,760 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 [2023-12-15 23:10:12,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:12,763 INFO L225 Difference]: With dead ends: 557 [2023-12-15 23:10:12,763 INFO L226 Difference]: Without dead ends: 329 [2023-12-15 23:10:12,764 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 [2023-12-15 23:10:12,764 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 25 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 772 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 [2023-12-15 23:10:12,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 772 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:12,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-12-15 23:10:12,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 326. [2023-12-15 23:10:12,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 266 states have (on average 1.3646616541353382) internal successors, (363), 269 states have internal predecessors, (363), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-15 23:10:12,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 461 transitions. [2023-12-15 23:10:12,777 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 461 transitions. Word has length 103 [2023-12-15 23:10:12,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:12,777 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 461 transitions. [2023-12-15 23:10:12,777 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) [2023-12-15 23:10:12,777 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 461 transitions. [2023-12-15 23:10:12,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-15 23:10:12,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:12,781 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] [2023-12-15 23:10:12,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:10:12,781 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:12,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:12,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1725643653, now seen corresponding path program 1 times [2023-12-15 23:10:12,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:12,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361751490] [2023-12-15 23:10:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:12,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-12-15 23:10:12,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:12,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361751490] [2023-12-15 23:10:12,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361751490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:12,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:12,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:12,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364915419] [2023-12-15 23:10:12,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:12,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:12,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:12,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:12,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:12,871 INFO L87 Difference]: Start difference. First operand 326 states and 461 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) [2023-12-15 23:10:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:12,908 INFO L93 Difference]: Finished difference Result 583 states and 848 transitions. [2023-12-15 23:10:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:10:12,909 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 [2023-12-15 23:10:12,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:12,910 INFO L225 Difference]: With dead ends: 583 [2023-12-15 23:10:12,911 INFO L226 Difference]: Without dead ends: 320 [2023-12-15 23:10:12,911 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 [2023-12-15 23:10:12,912 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 15 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 732 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 [2023-12-15 23:10:12,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 732 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:12,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-12-15 23:10:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2023-12-15 23:10:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 261 states have (on average 1.3448275862068966) internal successors, (351), 264 states have internal predecessors, (351), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-15 23:10:12,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 447 transitions. [2023-12-15 23:10:12,924 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 447 transitions. Word has length 104 [2023-12-15 23:10:12,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:12,925 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 447 transitions. [2023-12-15 23:10:12,925 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) [2023-12-15 23:10:12,925 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 447 transitions. [2023-12-15 23:10:12,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-15 23:10:12,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:12,926 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] [2023-12-15 23:10:12,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:10:12,926 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:12,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:12,927 INFO L85 PathProgramCache]: Analyzing trace with hash -994749963, now seen corresponding path program 1 times [2023-12-15 23:10:12,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:12,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059485074] [2023-12-15 23:10:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:12,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:12,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-15 23:10:13,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:13,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059485074] [2023-12-15 23:10:13,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059485074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:13,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:13,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:10:13,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436780160] [2023-12-15 23:10:13,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:13,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:10:13,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:13,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:10:13,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:13,031 INFO L87 Difference]: Start difference. First operand 320 states and 447 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) [2023-12-15 23:10:13,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:13,050 INFO L93 Difference]: Finished difference Result 558 states and 797 transitions. [2023-12-15 23:10:13,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:13,051 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 [2023-12-15 23:10:13,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:13,052 INFO L225 Difference]: With dead ends: 558 [2023-12-15 23:10:13,052 INFO L226 Difference]: Without dead ends: 322 [2023-12-15 23:10:13,053 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 [2023-12-15 23:10:13,053 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 0 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1015 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 [2023-12-15 23:10:13,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1015 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:13,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-12-15 23:10:13,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 320. [2023-12-15 23:10:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 261 states have (on average 1.3333333333333333) internal successors, (348), 264 states have internal predecessors, (348), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-15 23:10:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 444 transitions. [2023-12-15 23:10:13,062 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 444 transitions. Word has length 123 [2023-12-15 23:10:13,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:13,063 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 444 transitions. [2023-12-15 23:10:13,063 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) [2023-12-15 23:10:13,063 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 444 transitions. [2023-12-15 23:10:13,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-15 23:10:13,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:13,064 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] [2023-12-15 23:10:13,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:10:13,064 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:13,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:13,064 INFO L85 PathProgramCache]: Analyzing trace with hash 314482306, now seen corresponding path program 1 times [2023-12-15 23:10:13,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:13,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864853993] [2023-12-15 23:10:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:13,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2023-12-15 23:10:13,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:13,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864853993] [2023-12-15 23:10:13,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864853993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:13,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:13,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:13,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903546674] [2023-12-15 23:10:13,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:13,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:13,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:13,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:13,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:13,136 INFO L87 Difference]: Start difference. First operand 320 states and 444 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) [2023-12-15 23:10:13,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:13,175 INFO L93 Difference]: Finished difference Result 521 states and 757 transitions. [2023-12-15 23:10:13,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:10:13,175 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 [2023-12-15 23:10:13,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:13,177 INFO L225 Difference]: With dead ends: 521 [2023-12-15 23:10:13,177 INFO L226 Difference]: Without dead ends: 318 [2023-12-15 23:10:13,178 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 [2023-12-15 23:10:13,178 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 13 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 700 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 [2023-12-15 23:10:13,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 700 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:13,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-12-15 23:10:13,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2023-12-15 23:10:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 260 states have (on average 1.3307692307692307) internal successors, (346), 263 states have internal predecessors, (346), 47 states have call successors, (47), 10 states have call predecessors, (47), 10 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-15 23:10:13,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 440 transitions. [2023-12-15 23:10:13,187 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 440 transitions. Word has length 156 [2023-12-15 23:10:13,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:13,187 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 440 transitions. [2023-12-15 23:10:13,187 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) [2023-12-15 23:10:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 440 transitions. [2023-12-15 23:10:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 23:10:13,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:13,188 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] [2023-12-15 23:10:13,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:10:13,188 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:13,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:13,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2035774579, now seen corresponding path program 1 times [2023-12-15 23:10:13,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:13,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708169149] [2023-12-15 23:10:13,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:13,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,288 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2023-12-15 23:10:13,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:13,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708169149] [2023-12-15 23:10:13,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708169149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:13,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:13,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:13,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759172757] [2023-12-15 23:10:13,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:13,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:13,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:13,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:13,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:13,290 INFO L87 Difference]: Start difference. First operand 318 states and 440 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 23:10:13,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:13,331 INFO L93 Difference]: Finished difference Result 461 states and 653 transitions. [2023-12-15 23:10:13,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:13,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 171 [2023-12-15 23:10:13,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:13,333 INFO L225 Difference]: With dead ends: 461 [2023-12-15 23:10:13,333 INFO L226 Difference]: Without dead ends: 301 [2023-12-15 23:10:13,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:13,334 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 35 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 681 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 [2023-12-15 23:10:13,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 681 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:13,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-15 23:10:13,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2023-12-15 23:10:13,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 246 states have (on average 1.3211382113821137) internal successors, (325), 249 states have internal predecessors, (325), 44 states have call successors, (44), 10 states have call predecessors, (44), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-15 23:10:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 413 transitions. [2023-12-15 23:10:13,342 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 413 transitions. Word has length 171 [2023-12-15 23:10:13,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:13,343 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 413 transitions. [2023-12-15 23:10:13,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 23:10:13,343 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 413 transitions. [2023-12-15 23:10:13,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-15 23:10:13,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:13,344 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] [2023-12-15 23:10:13,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:10:13,344 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:13,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:13,345 INFO L85 PathProgramCache]: Analyzing trace with hash -797163241, now seen corresponding path program 1 times [2023-12-15 23:10:13,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:13,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99693219] [2023-12-15 23:10:13,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:13,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-12-15 23:10:13,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:13,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99693219] [2023-12-15 23:10:13,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99693219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:13,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:13,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:13,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827355532] [2023-12-15 23:10:13,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:13,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:13,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:13,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:13,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:13,496 INFO L87 Difference]: Start difference. First operand 301 states and 413 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 23:10:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:13,544 INFO L93 Difference]: Finished difference Result 444 states and 626 transitions. [2023-12-15 23:10:13,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:13,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 173 [2023-12-15 23:10:13,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:13,546 INFO L225 Difference]: With dead ends: 444 [2023-12-15 23:10:13,546 INFO L226 Difference]: Without dead ends: 282 [2023-12-15 23:10:13,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:13,547 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 30 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 685 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 [2023-12-15 23:10:13,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 685 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:13,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-12-15 23:10:13,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2023-12-15 23:10:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 230 states have (on average 1.3130434782608695) internal successors, (302), 233 states have internal predecessors, (302), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-15 23:10:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 384 transitions. [2023-12-15 23:10:13,556 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 384 transitions. Word has length 173 [2023-12-15 23:10:13,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:13,556 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 384 transitions. [2023-12-15 23:10:13,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 23:10:13,556 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 384 transitions. [2023-12-15 23:10:13,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-15 23:10:13,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:13,558 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] [2023-12-15 23:10:13,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:10:13,558 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:13,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:13,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1331756920, now seen corresponding path program 1 times [2023-12-15 23:10:13,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:13,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364369582] [2023-12-15 23:10:13,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:13,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2023-12-15 23:10:13,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:13,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364369582] [2023-12-15 23:10:13,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364369582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:13,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:13,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:10:13,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495656815] [2023-12-15 23:10:13,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:13,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:10:13,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:13,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:10:13,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:13,647 INFO L87 Difference]: Start difference. First operand 282 states and 384 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-15 23:10:13,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:13,665 INFO L93 Difference]: Finished difference Result 424 states and 596 transitions. [2023-12-15 23:10:13,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:13,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 174 [2023-12-15 23:10:13,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:13,666 INFO L225 Difference]: With dead ends: 424 [2023-12-15 23:10:13,667 INFO L226 Difference]: Without dead ends: 282 [2023-12-15 23:10:13,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:13,667 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 0 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 993 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 [2023-12-15 23:10:13,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 993 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:13,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-12-15 23:10:13,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2023-12-15 23:10:13,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 230 states have (on average 1.2869565217391303) internal successors, (296), 233 states have internal predecessors, (296), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-15 23:10:13,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 378 transitions. [2023-12-15 23:10:13,675 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 378 transitions. Word has length 174 [2023-12-15 23:10:13,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:13,675 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 378 transitions. [2023-12-15 23:10:13,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-15 23:10:13,676 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 378 transitions. [2023-12-15 23:10:13,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-15 23:10:13,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:13,677 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] [2023-12-15 23:10:13,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:10:13,677 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:13,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:13,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1958341484, now seen corresponding path program 1 times [2023-12-15 23:10:13,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:13,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273203791] [2023-12-15 23:10:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:13,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-12-15 23:10:13,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:13,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273203791] [2023-12-15 23:10:13,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273203791] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:13,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071070353] [2023-12-15 23:10:13,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:13,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:13,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:13,748 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) [2023-12-15 23:10:13,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 23:10:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 23:10:13,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-12-15 23:10:13,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:10:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-12-15 23:10:13,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071070353] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:13,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 23:10:13,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2023-12-15 23:10:13,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462289938] [2023-12-15 23:10:13,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:13,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:13,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:13,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:13,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:13,964 INFO L87 Difference]: Start difference. First operand 282 states and 378 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-15 23:10:13,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:13,994 INFO L93 Difference]: Finished difference Result 445 states and 618 transitions. [2023-12-15 23:10:13,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:10:13,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 181 [2023-12-15 23:10:13,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:13,996 INFO L225 Difference]: With dead ends: 445 [2023-12-15 23:10:13,996 INFO L226 Difference]: Without dead ends: 261 [2023-12-15 23:10:13,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:13,997 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 30 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 469 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 [2023-12-15 23:10:13,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 469 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:13,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-15 23:10:14,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2023-12-15 23:10:14,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 212 states have (on average 1.278301886792453) internal successors, (271), 215 states have internal predecessors, (271), 38 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-15 23:10:14,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 347 transitions. [2023-12-15 23:10:14,004 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 347 transitions. Word has length 181 [2023-12-15 23:10:14,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:14,004 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 347 transitions. [2023-12-15 23:10:14,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-15 23:10:14,004 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 347 transitions. [2023-12-15 23:10:14,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-15 23:10:14,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:14,006 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] [2023-12-15 23:10:14,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 23:10:14,210 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 [2023-12-15 23:10:14,210 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:14,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:14,211 INFO L85 PathProgramCache]: Analyzing trace with hash -581780281, now seen corresponding path program 1 times [2023-12-15 23:10:14,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:14,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365185034] [2023-12-15 23:10:14,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:14,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,293 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-12-15 23:10:14,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:14,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365185034] [2023-12-15 23:10:14,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365185034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:14,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:14,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:14,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121878716] [2023-12-15 23:10:14,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:14,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:14,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:14,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:14,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:14,295 INFO L87 Difference]: Start difference. First operand 261 states and 347 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-15 23:10:14,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:14,320 INFO L93 Difference]: Finished difference Result 402 states and 560 transitions. [2023-12-15 23:10:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:14,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 205 [2023-12-15 23:10:14,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:14,321 INFO L225 Difference]: With dead ends: 402 [2023-12-15 23:10:14,322 INFO L226 Difference]: Without dead ends: 267 [2023-12-15 23:10:14,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:14,322 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 6 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 725 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 [2023-12-15 23:10:14,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 725 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:14,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-12-15 23:10:14,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2023-12-15 23:10:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 215 states have (on average 1.2744186046511627) internal successors, (274), 218 states have internal predecessors, (274), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-15 23:10:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 350 transitions. [2023-12-15 23:10:14,330 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 350 transitions. Word has length 205 [2023-12-15 23:10:14,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:14,330 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 350 transitions. [2023-12-15 23:10:14,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-15 23:10:14,331 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 350 transitions. [2023-12-15 23:10:14,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-15 23:10:14,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:14,332 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] [2023-12-15 23:10:14,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:10:14,332 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:14,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:14,333 INFO L85 PathProgramCache]: Analyzing trace with hash 590260158, now seen corresponding path program 1 times [2023-12-15 23:10:14,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:14,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538781517] [2023-12-15 23:10:14,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:14,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-12-15 23:10:14,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:14,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538781517] [2023-12-15 23:10:14,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538781517] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:14,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571878223] [2023-12-15 23:10:14,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:14,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:14,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:14,472 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) [2023-12-15 23:10:14,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 23:10:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 23:10:14,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:14,614 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-12-15 23:10:14,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:14,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571878223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:14,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:14,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-15 23:10:14,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339467267] [2023-12-15 23:10:14,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:14,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:14,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:14,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:14,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:14,616 INFO L87 Difference]: Start difference. First operand 265 states and 350 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2023-12-15 23:10:14,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:14,641 INFO L93 Difference]: Finished difference Result 411 states and 567 transitions. [2023-12-15 23:10:14,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:14,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 212 [2023-12-15 23:10:14,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:14,643 INFO L225 Difference]: With dead ends: 411 [2023-12-15 23:10:14,643 INFO L226 Difference]: Without dead ends: 272 [2023-12-15 23:10:14,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:10:14,644 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 7 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 730 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 [2023-12-15 23:10:14,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 730 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:14,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-15 23:10:14,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 270. [2023-12-15 23:10:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 219 states have (on average 1.269406392694064) internal successors, (278), 222 states have internal predecessors, (278), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-15 23:10:14,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 354 transitions. [2023-12-15 23:10:14,651 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 354 transitions. Word has length 212 [2023-12-15 23:10:14,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:14,652 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 354 transitions. [2023-12-15 23:10:14,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2023-12-15 23:10:14,652 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 354 transitions. [2023-12-15 23:10:14,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-15 23:10:14,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:14,657 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] [2023-12-15 23:10:14,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 23:10:14,862 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 [2023-12-15 23:10:14,863 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:14,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:14,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1448756499, now seen corresponding path program 1 times [2023-12-15 23:10:14,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:14,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834508190] [2023-12-15 23:10:14,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:14,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-12-15 23:10:14,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:14,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834508190] [2023-12-15 23:10:14,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834508190] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:14,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070994344] [2023-12-15 23:10:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:14,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:14,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:14,971 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) [2023-12-15 23:10:15,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 23:10:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 23:10:15,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-12-15 23:10:15,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:15,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070994344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:15,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:15,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-15 23:10:15,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097252941] [2023-12-15 23:10:15,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:15,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:15,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:15,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:15,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:15,121 INFO L87 Difference]: Start difference. First operand 270 states and 354 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-12-15 23:10:15,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:15,146 INFO L93 Difference]: Finished difference Result 413 states and 565 transitions. [2023-12-15 23:10:15,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:10:15,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 220 [2023-12-15 23:10:15,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:15,147 INFO L225 Difference]: With dead ends: 413 [2023-12-15 23:10:15,148 INFO L226 Difference]: Without dead ends: 269 [2023-12-15 23:10:15,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:10:15,148 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 7 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 716 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 [2023-12-15 23:10:15,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 716 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:15,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-15 23:10:15,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2023-12-15 23:10:15,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 219 states have (on average 1.2557077625570776) internal successors, (275), 221 states have internal predecessors, (275), 37 states have call successors, (37), 12 states have call predecessors, (37), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-15 23:10:15,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 349 transitions. [2023-12-15 23:10:15,156 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 349 transitions. Word has length 220 [2023-12-15 23:10:15,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:15,156 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 349 transitions. [2023-12-15 23:10:15,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-12-15 23:10:15,156 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 349 transitions. [2023-12-15 23:10:15,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-15 23:10:15,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:15,158 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] [2023-12-15 23:10:15,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 23:10:15,363 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 [2023-12-15 23:10:15,364 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:15,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:15,364 INFO L85 PathProgramCache]: Analyzing trace with hash 2141411184, now seen corresponding path program 1 times [2023-12-15 23:10:15,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:15,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022634704] [2023-12-15 23:10:15,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:15,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-15 23:10:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2023-12-15 23:10:15,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:15,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022634704] [2023-12-15 23:10:15,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022634704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:15,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:15,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:15,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291456642] [2023-12-15 23:10:15,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:15,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:15,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:15,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:15,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:15,492 INFO L87 Difference]: Start difference. First operand 269 states and 349 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-15 23:10:15,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:15,679 INFO L93 Difference]: Finished difference Result 411 states and 554 transitions. [2023-12-15 23:10:15,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:10:15,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 228 [2023-12-15 23:10:15,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:15,681 INFO L225 Difference]: With dead ends: 411 [2023-12-15 23:10:15,681 INFO L226 Difference]: Without dead ends: 268 [2023-12-15 23:10:15,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:15,682 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 60 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:15,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 461 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:10:15,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-15 23:10:15,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2023-12-15 23:10:15,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 219 states have (on average 1.2511415525114156) internal successors, (274), 220 states have internal predecessors, (274), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-15 23:10:15,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 346 transitions. [2023-12-15 23:10:15,692 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 346 transitions. Word has length 228 [2023-12-15 23:10:15,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:15,692 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 346 transitions. [2023-12-15 23:10:15,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-12-15 23:10:15,693 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 346 transitions. [2023-12-15 23:10:15,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-15 23:10:15,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:15,694 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] [2023-12-15 23:10:15,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 23:10:15,694 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:15,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:15,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1079103239, now seen corresponding path program 1 times [2023-12-15 23:10:15,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:15,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856681807] [2023-12-15 23:10:15,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:15,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-15 23:10:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,864 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2023-12-15 23:10:15,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:15,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856681807] [2023-12-15 23:10:15,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856681807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:15,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:15,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:10:15,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432394238] [2023-12-15 23:10:15,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:15,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:10:15,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:15,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:10:15,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:15,867 INFO L87 Difference]: Start difference. First operand 268 states and 346 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 23:10:16,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:16,201 INFO L93 Difference]: Finished difference Result 615 states and 822 transitions. [2023-12-15 23:10:16,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:10:16,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 229 [2023-12-15 23:10:16,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:16,204 INFO L225 Difference]: With dead ends: 615 [2023-12-15 23:10:16,204 INFO L226 Difference]: Without dead ends: 473 [2023-12-15 23:10:16,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:10:16,206 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 403 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:16,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 609 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:10:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-12-15 23:10:16,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 419. [2023-12-15 23:10:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 340 states have (on average 1.3) internal successors, (442), 342 states have internal predecessors, (442), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-15 23:10:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 550 transitions. [2023-12-15 23:10:16,224 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 550 transitions. Word has length 229 [2023-12-15 23:10:16,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:16,224 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 550 transitions. [2023-12-15 23:10:16,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 23:10:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 550 transitions. [2023-12-15 23:10:16,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-15 23:10:16,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:16,226 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:16,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 23:10:16,226 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:16,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:16,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1302903290, now seen corresponding path program 1 times [2023-12-15 23:10:16,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:16,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67821114] [2023-12-15 23:10:16,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:16,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-15 23:10:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-15 23:10:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-15 23:10:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-15 23:10:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-12-15 23:10:16,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:16,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67821114] [2023-12-15 23:10:16,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67821114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:16,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:16,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:16,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967694719] [2023-12-15 23:10:16,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:16,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:16,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:16,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:16,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:16,386 INFO L87 Difference]: Start difference. First operand 419 states and 550 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-15 23:10:16,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:16,682 INFO L93 Difference]: Finished difference Result 883 states and 1212 transitions. [2023-12-15 23:10:16,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:16,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 257 [2023-12-15 23:10:16,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:16,685 INFO L225 Difference]: With dead ends: 883 [2023-12-15 23:10:16,685 INFO L226 Difference]: Without dead ends: 658 [2023-12-15 23:10:16,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:16,686 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 216 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:16,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 458 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:10:16,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2023-12-15 23:10:16,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 496. [2023-12-15 23:10:16,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 407 states have (on average 1.3095823095823096) internal successors, (533), 410 states have internal predecessors, (533), 59 states have call successors, (59), 29 states have call predecessors, (59), 29 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-15 23:10:16,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 651 transitions. [2023-12-15 23:10:16,720 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 651 transitions. Word has length 257 [2023-12-15 23:10:16,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:16,721 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 651 transitions. [2023-12-15 23:10:16,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-15 23:10:16,721 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 651 transitions. [2023-12-15 23:10:16,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-15 23:10:16,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:16,723 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:16,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 23:10:16,723 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:16,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:16,723 INFO L85 PathProgramCache]: Analyzing trace with hash 180507053, now seen corresponding path program 1 times [2023-12-15 23:10:16,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:16,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494572045] [2023-12-15 23:10:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:16,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-15 23:10:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-15 23:10:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-15 23:10:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-15 23:10:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-12-15 23:10:16,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:16,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494572045] [2023-12-15 23:10:16,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494572045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:16,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:16,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:16,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50339091] [2023-12-15 23:10:16,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:16,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:16,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:16,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:16,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:16,844 INFO L87 Difference]: Start difference. First operand 496 states and 651 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, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-15 23:10:17,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:17,106 INFO L93 Difference]: Finished difference Result 1048 states and 1431 transitions. [2023-12-15 23:10:17,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:17,106 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, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 258 [2023-12-15 23:10:17,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:17,109 INFO L225 Difference]: With dead ends: 1048 [2023-12-15 23:10:17,109 INFO L226 Difference]: Without dead ends: 775 [2023-12-15 23:10:17,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:17,110 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 217 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:17,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 486 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:10:17,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2023-12-15 23:10:17,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 600. [2023-12-15 23:10:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 499 states have (on average 1.3206412825651304) internal successors, (659), 504 states have internal predecessors, (659), 65 states have call successors, (65), 35 states have call predecessors, (65), 35 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-15 23:10:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 789 transitions. [2023-12-15 23:10:17,137 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 789 transitions. Word has length 258 [2023-12-15 23:10:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:17,138 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 789 transitions. [2023-12-15 23:10:17,138 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, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-15 23:10:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 789 transitions. [2023-12-15 23:10:17,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-12-15 23:10:17,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:17,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:17,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 23:10:17,140 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:17,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:17,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1714622539, now seen corresponding path program 1 times [2023-12-15 23:10:17,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:17,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670852922] [2023-12-15 23:10:17,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:17,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-15 23:10:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-15 23:10:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-15 23:10:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-12-15 23:10:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,270 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-12-15 23:10:17,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:17,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670852922] [2023-12-15 23:10:17,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670852922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:17,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:17,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:17,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074980327] [2023-12-15 23:10:17,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:17,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:17,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:17,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:17,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:17,272 INFO L87 Difference]: Start difference. First operand 600 states and 789 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-15 23:10:17,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:17,567 INFO L93 Difference]: Finished difference Result 1246 states and 1701 transitions. [2023-12-15 23:10:17,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:17,568 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), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 259 [2023-12-15 23:10:17,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:17,571 INFO L225 Difference]: With dead ends: 1246 [2023-12-15 23:10:17,571 INFO L226 Difference]: Without dead ends: 901 [2023-12-15 23:10:17,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:17,572 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 217 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:17,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 513 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:10:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2023-12-15 23:10:17,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 698. [2023-12-15 23:10:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 589 states have (on average 1.33616298811545) internal successors, (787), 598 states have internal predecessors, (787), 69 states have call successors, (69), 39 states have call predecessors, (69), 39 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-15 23:10:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 925 transitions. [2023-12-15 23:10:17,613 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 925 transitions. Word has length 259 [2023-12-15 23:10:17,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:17,614 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 925 transitions. [2023-12-15 23:10:17,614 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), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-15 23:10:17,615 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 925 transitions. [2023-12-15 23:10:17,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-12-15 23:10:17,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:17,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:17,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 23:10:17,617 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:17,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:17,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1439862925, now seen corresponding path program 1 times [2023-12-15 23:10:17,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:17,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833481740] [2023-12-15 23:10:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:17,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-15 23:10:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-15 23:10:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-15 23:10:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-12-15 23:10:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2023-12-15 23:10:17,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:17,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833481740] [2023-12-15 23:10:17,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833481740] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:17,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33841551] [2023-12-15 23:10:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:17,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:17,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:17,783 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) [2023-12-15 23:10:17,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 23:10:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 23:10:17,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2023-12-15 23:10:17,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:17,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33841551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:17,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:17,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-12-15 23:10:17,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111974439] [2023-12-15 23:10:17,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:17,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:17,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:17,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:17,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:10:17,976 INFO L87 Difference]: Start difference. First operand 698 states and 925 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-15 23:10:18,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:18,059 INFO L93 Difference]: Finished difference Result 1145 states and 1557 transitions. [2023-12-15 23:10:18,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:18,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 259 [2023-12-15 23:10:18,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:18,061 INFO L225 Difference]: With dead ends: 1145 [2023-12-15 23:10:18,062 INFO L226 Difference]: Without dead ends: 698 [2023-12-15 23:10:18,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:10:18,063 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 51 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 633 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 [2023-12-15 23:10:18,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 633 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:18,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2023-12-15 23:10:18,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2023-12-15 23:10:18,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 589 states have (on average 1.3259762308998302) internal successors, (781), 598 states have internal predecessors, (781), 69 states have call successors, (69), 39 states have call predecessors, (69), 39 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-15 23:10:18,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 919 transitions. [2023-12-15 23:10:18,119 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 919 transitions. Word has length 259 [2023-12-15 23:10:18,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:18,120 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 919 transitions. [2023-12-15 23:10:18,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-15 23:10:18,120 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 919 transitions. [2023-12-15 23:10:18,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-15 23:10:18,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:18,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:18,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 23:10:18,327 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 [2023-12-15 23:10:18,328 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:18,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:18,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1774226974, now seen corresponding path program 1 times [2023-12-15 23:10:18,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:18,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934409707] [2023-12-15 23:10:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:18,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-15 23:10:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-15 23:10:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-15 23:10:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-15 23:10:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2023-12-15 23:10:18,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:18,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934409707] [2023-12-15 23:10:18,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934409707] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:18,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775583229] [2023-12-15 23:10:18,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:18,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:18,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:18,510 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) [2023-12-15 23:10:18,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 23:10:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 23:10:18,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2023-12-15 23:10:18,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:18,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775583229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:18,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:18,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-12-15 23:10:18,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40853324] [2023-12-15 23:10:18,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:18,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:18,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:18,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:18,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:10:18,691 INFO L87 Difference]: Start difference. First operand 698 states and 919 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-15 23:10:18,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:18,755 INFO L93 Difference]: Finished difference Result 1145 states and 1543 transitions. [2023-12-15 23:10:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:18,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 260 [2023-12-15 23:10:18,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:18,758 INFO L225 Difference]: With dead ends: 1145 [2023-12-15 23:10:18,759 INFO L226 Difference]: Without dead ends: 710 [2023-12-15 23:10:18,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:10:18,760 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 15 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 656 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 [2023-12-15 23:10:18,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 656 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:18,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2023-12-15 23:10:18,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 710. [2023-12-15 23:10:18,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 599 states have (on average 1.327212020033389) internal successors, (795), 608 states have internal predecessors, (795), 69 states have call successors, (69), 41 states have call predecessors, (69), 41 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-15 23:10:18,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 933 transitions. [2023-12-15 23:10:18,802 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 933 transitions. Word has length 260 [2023-12-15 23:10:18,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:18,802 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 933 transitions. [2023-12-15 23:10:18,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-15 23:10:18,803 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 933 transitions. [2023-12-15 23:10:18,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-12-15 23:10:18,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:18,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:18,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 23:10:19,010 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 [2023-12-15 23:10:19,011 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:19,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:19,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2125489805, now seen corresponding path program 1 times [2023-12-15 23:10:19,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:19,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440307340] [2023-12-15 23:10:19,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:19,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-15 23:10:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-15 23:10:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-15 23:10:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-15 23:10:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,189 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-12-15 23:10:19,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:19,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440307340] [2023-12-15 23:10:19,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440307340] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:19,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:19,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:19,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677812863] [2023-12-15 23:10:19,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:19,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:19,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:19,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:19,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:19,191 INFO L87 Difference]: Start difference. First operand 710 states and 933 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-15 23:10:19,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:19,402 INFO L93 Difference]: Finished difference Result 1159 states and 1557 transitions. [2023-12-15 23:10:19,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:10:19,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 261 [2023-12-15 23:10:19,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:19,404 INFO L225 Difference]: With dead ends: 1159 [2023-12-15 23:10:19,404 INFO L226 Difference]: Without dead ends: 692 [2023-12-15 23:10:19,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:19,405 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 59 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:19,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 459 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:10:19,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2023-12-15 23:10:19,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2023-12-15 23:10:19,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 582 states have (on average 1.3109965635738832) internal successors, (763), 590 states have internal predecessors, (763), 69 states have call successors, (69), 41 states have call predecessors, (69), 40 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-15 23:10:19,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 900 transitions. [2023-12-15 23:10:19,434 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 900 transitions. Word has length 261 [2023-12-15 23:10:19,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:19,434 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 900 transitions. [2023-12-15 23:10:19,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-15 23:10:19,434 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 900 transitions. [2023-12-15 23:10:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-15 23:10:19,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:19,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:19,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-15 23:10:19,436 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:19,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:19,437 INFO L85 PathProgramCache]: Analyzing trace with hash 630866000, now seen corresponding path program 1 times [2023-12-15 23:10:19,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:19,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124026553] [2023-12-15 23:10:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:19,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-15 23:10:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-15 23:10:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-15 23:10:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-12-15 23:10:19,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:19,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124026553] [2023-12-15 23:10:19,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124026553] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:19,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:19,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:10:19,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291253612] [2023-12-15 23:10:19,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:19,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:10:19,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:19,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:10:19,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:10:19,675 INFO L87 Difference]: Start difference. First operand 692 states and 900 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, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 23:10:20,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:20,093 INFO L93 Difference]: Finished difference Result 991 states and 1363 transitions. [2023-12-15 23:10:20,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:10:20,094 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, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 262 [2023-12-15 23:10:20,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:20,097 INFO L225 Difference]: With dead ends: 991 [2023-12-15 23:10:20,097 INFO L226 Difference]: Without dead ends: 989 [2023-12-15 23:10:20,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:10:20,098 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 233 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:20,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1456 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:10:20,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2023-12-15 23:10:20,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 698. [2023-12-15 23:10:20,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 586 states have (on average 1.3088737201365188) internal successors, (767), 595 states have internal predecessors, (767), 70 states have call successors, (70), 42 states have call predecessors, (70), 41 states have return successors, (69), 67 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-15 23:10:20,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 906 transitions. [2023-12-15 23:10:20,129 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 906 transitions. Word has length 262 [2023-12-15 23:10:20,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:20,129 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 906 transitions. [2023-12-15 23:10:20,129 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, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 23:10:20,129 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 906 transitions. [2023-12-15 23:10:20,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-15 23:10:20,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:20,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:20,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-15 23:10:20,132 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:20,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:20,132 INFO L85 PathProgramCache]: Analyzing trace with hash 146466273, now seen corresponding path program 1 times [2023-12-15 23:10:20,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:20,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116528403] [2023-12-15 23:10:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:20,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-15 23:10:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-15 23:10:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-15 23:10:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-15 23:10:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,420 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2023-12-15 23:10:20,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:20,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116528403] [2023-12-15 23:10:20,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116528403] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:20,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737129276] [2023-12-15 23:10:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:20,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:20,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:20,421 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) [2023-12-15 23:10:20,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 23:10:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 23:10:20,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 251 proven. 33 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-12-15 23:10:20,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:10:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2023-12-15 23:10:20,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737129276] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:10:20,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:10:20,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2023-12-15 23:10:20,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005863366] [2023-12-15 23:10:20,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:10:20,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-15 23:10:20,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:20,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-15 23:10:20,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-15 23:10:20,959 INFO L87 Difference]: Start difference. First operand 698 states and 906 transitions. Second operand has 19 states, 19 states have (on average 7.578947368421052) internal successors, (144), 14 states have internal predecessors, (144), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2023-12-15 23:10:22,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:22,382 INFO L93 Difference]: Finished difference Result 1727 states and 2355 transitions. [2023-12-15 23:10:22,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-15 23:10:22,383 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.578947368421052) internal successors, (144), 14 states have internal predecessors, (144), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) Word has length 270 [2023-12-15 23:10:22,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:22,387 INFO L225 Difference]: With dead ends: 1727 [2023-12-15 23:10:22,387 INFO L226 Difference]: Without dead ends: 1290 [2023-12-15 23:10:22,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 582 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2023-12-15 23:10:22,389 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 381 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:22,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 2770 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2049 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 23:10:22,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2023-12-15 23:10:22,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 966. [2023-12-15 23:10:22,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 814 states have (on average 1.2997542997542997) internal successors, (1058), 824 states have internal predecessors, (1058), 94 states have call successors, (94), 55 states have call predecessors, (94), 57 states have return successors, (98), 93 states have call predecessors, (98), 93 states have call successors, (98) [2023-12-15 23:10:22,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1250 transitions. [2023-12-15 23:10:22,439 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1250 transitions. Word has length 270 [2023-12-15 23:10:22,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:22,440 INFO L495 AbstractCegarLoop]: Abstraction has 966 states and 1250 transitions. [2023-12-15 23:10:22,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.578947368421052) internal successors, (144), 14 states have internal predecessors, (144), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2023-12-15 23:10:22,440 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1250 transitions. [2023-12-15 23:10:22,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-15 23:10:22,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:22,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:22,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 23:10:22,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:22,647 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:22,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:22,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1108080290, now seen corresponding path program 1 times [2023-12-15 23:10:22,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:22,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893479300] [2023-12-15 23:10:22,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:22,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-15 23:10:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-15 23:10:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-15 23:10:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-15 23:10:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2023-12-15 23:10:22,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:22,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893479300] [2023-12-15 23:10:22,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893479300] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:22,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217365377] [2023-12-15 23:10:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:22,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:22,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:22,770 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) [2023-12-15 23:10:22,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 23:10:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:22,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 23:10:22,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2023-12-15 23:10:22,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:22,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217365377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:22,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:22,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-15 23:10:22,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814316607] [2023-12-15 23:10:22,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:22,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:22,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:22,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:22,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:22,943 INFO L87 Difference]: Start difference. First operand 966 states and 1250 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-15 23:10:23,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:23,016 INFO L93 Difference]: Finished difference Result 1796 states and 2365 transitions. [2023-12-15 23:10:23,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:23,016 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 270 [2023-12-15 23:10:23,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:23,019 INFO L225 Difference]: With dead ends: 1796 [2023-12-15 23:10:23,019 INFO L226 Difference]: Without dead ends: 950 [2023-12-15 23:10:23,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:10:23,021 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 11 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 653 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 [2023-12-15 23:10:23,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 653 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:23,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2023-12-15 23:10:23,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 950. [2023-12-15 23:10:23,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 803 states have (on average 1.2876712328767124) internal successors, (1034), 813 states have internal predecessors, (1034), 90 states have call successors, (90), 55 states have call predecessors, (90), 56 states have return successors, (93), 88 states have call predecessors, (93), 89 states have call successors, (93) [2023-12-15 23:10:23,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1217 transitions. [2023-12-15 23:10:23,090 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1217 transitions. Word has length 270 [2023-12-15 23:10:23,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:23,091 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 1217 transitions. [2023-12-15 23:10:23,091 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-15 23:10:23,091 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1217 transitions. [2023-12-15 23:10:23,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-15 23:10:23,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:23,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:23,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 23:10:23,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-15 23:10:23,299 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:23,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:23,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1546136389, now seen corresponding path program 1 times [2023-12-15 23:10:23,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:23,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154147139] [2023-12-15 23:10:23,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:23,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 23:10:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 23:10:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-15 23:10:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-12-15 23:10:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-12-15 23:10:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-15 23:10:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-15 23:10:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-15 23:10:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-15 23:10:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2023-12-15 23:10:23,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:23,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154147139] [2023-12-15 23:10:23,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154147139] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:23,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329818985] [2023-12-15 23:10:23,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:23,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:23,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:23,426 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) [2023-12-15 23:10:23,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 23:10:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:23,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 23:10:23,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-12-15 23:10:23,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:23,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329818985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:23,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:23,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-15 23:10:23,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203326391] [2023-12-15 23:10:23,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:23,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:23,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:23,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:23,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:23,596 INFO L87 Difference]: Start difference. First operand 950 states and 1217 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, (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) [2023-12-15 23:10:23,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:23,668 INFO L93 Difference]: Finished difference Result 1644 states and 2149 transitions. [2023-12-15 23:10:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:23,668 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, (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 273 [2023-12-15 23:10:23,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:23,671 INFO L225 Difference]: With dead ends: 1644 [2023-12-15 23:10:23,671 INFO L226 Difference]: Without dead ends: 805 [2023-12-15 23:10:23,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:10:23,673 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 8 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 656 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 [2023-12-15 23:10:23,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 656 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:23,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-15 23:10:23,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-12-15 23:10:23,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 676 states have (on average 1.2884615384615385) internal successors, (871), 686 states have internal predecessors, (871), 81 states have call successors, (81), 48 states have call predecessors, (81), 47 states have return successors, (80), 77 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-15 23:10:23,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1032 transitions. [2023-12-15 23:10:23,712 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1032 transitions. Word has length 273 [2023-12-15 23:10:23,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:23,712 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1032 transitions. [2023-12-15 23:10:23,712 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, (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) [2023-12-15 23:10:23,712 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1032 transitions. [2023-12-15 23:10:23,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-12-15 23:10:23,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:23,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:23,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 23:10:23,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:23,921 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:23,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:23,921 INFO L85 PathProgramCache]: Analyzing trace with hash 711596396, now seen corresponding path program 1 times [2023-12-15 23:10:23,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:23,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105764308] [2023-12-15 23:10:23,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:23,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-15 23:10:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-15 23:10:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-15 23:10:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-15 23:10:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-12-15 23:10:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2023-12-15 23:10:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-15 23:10:24,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:24,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105764308] [2023-12-15 23:10:24,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105764308] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:24,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187110630] [2023-12-15 23:10:24,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:24,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:24,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:24,153 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) [2023-12-15 23:10:24,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 23:10:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:24,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 23:10:24,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:24,522 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2023-12-15 23:10:24,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:24,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187110630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:24,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:24,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-12-15 23:10:24,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382982561] [2023-12-15 23:10:24,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:24,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:10:24,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:24,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:10:24,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2023-12-15 23:10:24,525 INFO L87 Difference]: Start difference. First operand 805 states and 1032 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-15 23:10:25,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:25,027 INFO L93 Difference]: Finished difference Result 2156 states and 2775 transitions. [2023-12-15 23:10:25,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 23:10:25,027 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 285 [2023-12-15 23:10:25,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:25,034 INFO L225 Difference]: With dead ends: 2156 [2023-12-15 23:10:25,034 INFO L226 Difference]: Without dead ends: 1712 [2023-12-15 23:10:25,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2023-12-15 23:10:25,036 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 620 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:25,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 2579 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:10:25,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2023-12-15 23:10:25,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1338. [2023-12-15 23:10:25,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1111 states have (on average 1.2727272727272727) internal successors, (1414), 1126 states have internal predecessors, (1414), 149 states have call successors, (149), 78 states have call predecessors, (149), 77 states have return successors, (148), 140 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-15 23:10:25,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1711 transitions. [2023-12-15 23:10:25,098 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1711 transitions. Word has length 285 [2023-12-15 23:10:25,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:25,099 INFO L495 AbstractCegarLoop]: Abstraction has 1338 states and 1711 transitions. [2023-12-15 23:10:25,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-15 23:10:25,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1711 transitions. [2023-12-15 23:10:25,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-15 23:10:25,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:25,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:25,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 23:10:25,306 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,SelfDestructingSolverStorable32 [2023-12-15 23:10:25,306 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:25,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:25,307 INFO L85 PathProgramCache]: Analyzing trace with hash -2134213239, now seen corresponding path program 1 times [2023-12-15 23:10:25,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:25,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349258599] [2023-12-15 23:10:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:25,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-15 23:10:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-15 23:10:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-15 23:10:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-12-15 23:10:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-12-15 23:10:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-12-15 23:10:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-12-15 23:10:25,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:25,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349258599] [2023-12-15 23:10:25,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349258599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:25,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:25,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:10:25,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453768935] [2023-12-15 23:10:25,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:25,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:10:25,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:25,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:10:25,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:10:25,442 INFO L87 Difference]: Start difference. First operand 1338 states and 1711 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-15 23:10:25,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:25,796 INFO L93 Difference]: Finished difference Result 2853 states and 3881 transitions. [2023-12-15 23:10:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:10:25,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 291 [2023-12-15 23:10:25,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:25,801 INFO L225 Difference]: With dead ends: 2853 [2023-12-15 23:10:25,801 INFO L226 Difference]: Without dead ends: 1861 [2023-12-15 23:10:25,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:10:25,803 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 236 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:25,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 910 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:10:25,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2023-12-15 23:10:25,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1431. [2023-12-15 23:10:25,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1183 states have (on average 1.2840236686390532) internal successors, (1519), 1198 states have internal predecessors, (1519), 170 states have call successors, (170), 78 states have call predecessors, (170), 77 states have return successors, (169), 161 states have call predecessors, (169), 169 states have call successors, (169) [2023-12-15 23:10:25,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1858 transitions. [2023-12-15 23:10:25,881 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1858 transitions. Word has length 291 [2023-12-15 23:10:25,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:25,881 INFO L495 AbstractCegarLoop]: Abstraction has 1431 states and 1858 transitions. [2023-12-15 23:10:25,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-15 23:10:25,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1858 transitions. [2023-12-15 23:10:25,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-15 23:10:25,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:25,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:25,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-15 23:10:25,883 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:25,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:25,883 INFO L85 PathProgramCache]: Analyzing trace with hash 330339077, now seen corresponding path program 1 times [2023-12-15 23:10:25,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:25,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647621019] [2023-12-15 23:10:25,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:25,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-15 23:10:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-15 23:10:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-15 23:10:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-12-15 23:10:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-12-15 23:10:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-12-15 23:10:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,101 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 23:10:26,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:26,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647621019] [2023-12-15 23:10:26,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647621019] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:26,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741280367] [2023-12-15 23:10:26,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:26,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:26,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:26,125 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) [2023-12-15 23:10:26,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 23:10:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:26,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 23:10:26,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2023-12-15 23:10:26,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:26,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741280367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:26,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:26,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 12 [2023-12-15 23:10:26,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896197050] [2023-12-15 23:10:26,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:26,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:10:26,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:26,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:10:26,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-15 23:10:26,379 INFO L87 Difference]: Start difference. First operand 1431 states and 1858 transitions. Second operand has 10 states, 10 states have (on average 11.2) internal successors, (112), 9 states have internal predecessors, (112), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-15 23:10:27,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:27,053 INFO L93 Difference]: Finished difference Result 3728 states and 4950 transitions. [2023-12-15 23:10:27,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 23:10:27,054 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 9 states have internal predecessors, (112), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 291 [2023-12-15 23:10:27,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:27,062 INFO L225 Difference]: With dead ends: 3728 [2023-12-15 23:10:27,062 INFO L226 Difference]: Without dead ends: 2644 [2023-12-15 23:10:27,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2023-12-15 23:10:27,065 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 729 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:27,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 3111 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 23:10:27,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2023-12-15 23:10:27,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 1644. [2023-12-15 23:10:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 1359 states have (on average 1.274466519499632) internal successors, (1732), 1376 states have internal predecessors, (1732), 197 states have call successors, (197), 88 states have call predecessors, (197), 87 states have return successors, (196), 186 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-15 23:10:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2125 transitions. [2023-12-15 23:10:27,165 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2125 transitions. Word has length 291 [2023-12-15 23:10:27,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:27,165 INFO L495 AbstractCegarLoop]: Abstraction has 1644 states and 2125 transitions. [2023-12-15 23:10:27,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 9 states have internal predecessors, (112), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-15 23:10:27,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2125 transitions. [2023-12-15 23:10:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-15 23:10:27,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:27,167 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:27,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 23:10:27,373 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,SelfDestructingSolverStorable34 [2023-12-15 23:10:27,373 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:27,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:27,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1217393925, now seen corresponding path program 1 times [2023-12-15 23:10:27,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:27,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682615784] [2023-12-15 23:10:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:27,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-15 23:10:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-15 23:10:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-15 23:10:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-12-15 23:10:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-12-15 23:10:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-12-15 23:10:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,625 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 23:10:27,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:27,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682615784] [2023-12-15 23:10:27,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682615784] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:27,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514887329] [2023-12-15 23:10:27,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:27,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:27,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:27,642 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) [2023-12-15 23:10:27,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 23:10:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:27,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 23:10:27,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2023-12-15 23:10:27,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:27,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514887329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:27,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:27,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 12 [2023-12-15 23:10:27,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722605112] [2023-12-15 23:10:27,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:27,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:10:27,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:27,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:10:27,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-15 23:10:27,901 INFO L87 Difference]: Start difference. First operand 1644 states and 2125 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-15 23:10:28,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:28,593 INFO L93 Difference]: Finished difference Result 3555 states and 4677 transitions. [2023-12-15 23:10:28,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 23:10:28,594 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 291 [2023-12-15 23:10:28,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:28,605 INFO L225 Difference]: With dead ends: 3555 [2023-12-15 23:10:28,605 INFO L226 Difference]: Without dead ends: 2327 [2023-12-15 23:10:28,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2023-12-15 23:10:28,608 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 724 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:28,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 3018 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 23:10:28,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2023-12-15 23:10:28,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 1610. [2023-12-15 23:10:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1335 states have (on average 1.2674157303370785) internal successors, (1692), 1352 states have internal predecessors, (1692), 187 states have call successors, (187), 88 states have call predecessors, (187), 87 states have return successors, (186), 176 states have call predecessors, (186), 186 states have call successors, (186) [2023-12-15 23:10:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2065 transitions. [2023-12-15 23:10:28,706 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2065 transitions. Word has length 291 [2023-12-15 23:10:28,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:28,707 INFO L495 AbstractCegarLoop]: Abstraction has 1610 states and 2065 transitions. [2023-12-15 23:10:28,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-15 23:10:28,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2065 transitions. [2023-12-15 23:10:28,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-15 23:10:28,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:28,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:28,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 23:10:28,915 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,SelfDestructingSolverStorable35 [2023-12-15 23:10:28,916 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:28,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:28,916 INFO L85 PathProgramCache]: Analyzing trace with hash -885814649, now seen corresponding path program 1 times [2023-12-15 23:10:28,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:28,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551609414] [2023-12-15 23:10:28,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:28,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-15 23:10:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-15 23:10:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-15 23:10:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-12-15 23:10:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-12-15 23:10:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-12-15 23:10:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,106 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-12-15 23:10:29,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:29,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551609414] [2023-12-15 23:10:29,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551609414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:29,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:29,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 23:10:29,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120496000] [2023-12-15 23:10:29,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:29,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 23:10:29,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:29,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 23:10:29,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:10:29,109 INFO L87 Difference]: Start difference. First operand 1610 states and 2065 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-15 23:10:29,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:29,639 INFO L93 Difference]: Finished difference Result 2882 states and 3732 transitions. [2023-12-15 23:10:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:10:29,640 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), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 291 [2023-12-15 23:10:29,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:29,645 INFO L225 Difference]: With dead ends: 2882 [2023-12-15 23:10:29,645 INFO L226 Difference]: Without dead ends: 1636 [2023-12-15 23:10:29,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:10:29,646 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 436 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:29,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 563 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 23:10:29,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2023-12-15 23:10:29,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1513. [2023-12-15 23:10:29,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1253 states have (on average 1.2673583399840382) internal successors, (1588), 1269 states have internal predecessors, (1588), 177 states have call successors, (177), 83 states have call predecessors, (177), 82 states have return successors, (176), 167 states have call predecessors, (176), 176 states have call successors, (176) [2023-12-15 23:10:29,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 1941 transitions. [2023-12-15 23:10:29,798 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 1941 transitions. Word has length 291 [2023-12-15 23:10:29,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:29,799 INFO L495 AbstractCegarLoop]: Abstraction has 1513 states and 1941 transitions. [2023-12-15 23:10:29,799 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), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-15 23:10:29,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 1941 transitions. [2023-12-15 23:10:29,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-15 23:10:29,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:29,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:29,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-15 23:10:29,801 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:29,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:29,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1955457044, now seen corresponding path program 1 times [2023-12-15 23:10:29,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:29,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366261362] [2023-12-15 23:10:29,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:29,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-15 23:10:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-15 23:10:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-15 23:10:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-15 23:10:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-15 23:10:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2023-12-15 23:10:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-12-15 23:10:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2023-12-15 23:10:29,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:29,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366261362] [2023-12-15 23:10:29,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366261362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:29,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:29,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:10:29,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547455385] [2023-12-15 23:10:29,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:29,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:10:29,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:29,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:10:29,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:29,980 INFO L87 Difference]: Start difference. First operand 1513 states and 1941 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 23:10:30,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:30,522 INFO L93 Difference]: Finished difference Result 2731 states and 3524 transitions. [2023-12-15 23:10:30,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:10:30,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 298 [2023-12-15 23:10:30,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:30,527 INFO L225 Difference]: With dead ends: 2731 [2023-12-15 23:10:30,528 INFO L226 Difference]: Without dead ends: 1575 [2023-12-15 23:10:30,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:10:30,529 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 350 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:30,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 990 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 23:10:30,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2023-12-15 23:10:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1336. [2023-12-15 23:10:30,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1114 states have (on average 1.244165170556553) internal successors, (1386), 1122 states have internal predecessors, (1386), 151 states have call successors, (151), 70 states have call predecessors, (151), 70 states have return successors, (151), 143 states have call predecessors, (151), 151 states have call successors, (151) [2023-12-15 23:10:30,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1688 transitions. [2023-12-15 23:10:30,602 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1688 transitions. Word has length 298 [2023-12-15 23:10:30,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:30,602 INFO L495 AbstractCegarLoop]: Abstraction has 1336 states and 1688 transitions. [2023-12-15 23:10:30,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 23:10:30,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1688 transitions. [2023-12-15 23:10:30,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-15 23:10:30,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:30,605 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 23:10:30,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-15 23:10:30,605 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:30,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:30,606 INFO L85 PathProgramCache]: Analyzing trace with hash 996256038, now seen corresponding path program 1 times [2023-12-15 23:10:30,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:30,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743467437] [2023-12-15 23:10:30,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:30,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-15 23:10:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-15 23:10:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-15 23:10:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-15 23:10:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-15 23:10:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-15 23:10:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-15 23:10:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-12-15 23:10:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-12-15 23:10:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2023-12-15 23:10:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-12-15 23:10:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2023-12-15 23:10:31,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:31,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743467437] [2023-12-15 23:10:31,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743467437] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:31,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783692245] [2023-12-15 23:10:31,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:31,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:31,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:31,137 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) [2023-12-15 23:10:31,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 23:10:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:31,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-15 23:10:31,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 224 proven. 75 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2023-12-15 23:10:31,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:10:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 34 proven. 71 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-12-15 23:10:32,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783692245] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:10:32,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:10:32,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 28 [2023-12-15 23:10:32,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280873755] [2023-12-15 23:10:32,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:10:32,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-15 23:10:32,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:32,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-15 23:10:32,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2023-12-15 23:10:32,231 INFO L87 Difference]: Start difference. First operand 1336 states and 1688 transitions. Second operand has 28 states, 28 states have (on average 8.571428571428571) internal successors, (240), 24 states have internal predecessors, (240), 8 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 11 states have call predecessors, (51), 8 states have call successors, (51) [2023-12-15 23:10:41,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:41,046 INFO L93 Difference]: Finished difference Result 8215 states and 10994 transitions. [2023-12-15 23:10:41,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2023-12-15 23:10:41,046 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.571428571428571) internal successors, (240), 24 states have internal predecessors, (240), 8 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 11 states have call predecessors, (51), 8 states have call successors, (51) Word has length 339 [2023-12-15 23:10:41,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:41,085 INFO L225 Difference]: With dead ends: 8215 [2023-12-15 23:10:41,086 INFO L226 Difference]: Without dead ends: 7179 [2023-12-15 23:10:41,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 724 SyntacticMatches, 8 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16077 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=4843, Invalid=39047, Unknown=0, NotChecked=0, Total=43890 [2023-12-15 23:10:41,097 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 5504 mSDsluCounter, 6417 mSDsCounter, 0 mSdLazyCounter, 5872 mSolverCounterSat, 1688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5504 SdHoareTripleChecker+Valid, 6960 SdHoareTripleChecker+Invalid, 7560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1688 IncrementalHoareTripleChecker+Valid, 5872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:41,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5504 Valid, 6960 Invalid, 7560 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1688 Valid, 5872 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-15 23:10:41,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7179 states. [2023-12-15 23:10:41,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7179 to 4679. [2023-12-15 23:10:41,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4679 states, 3695 states have (on average 1.263870094722598) internal successors, (4670), 3737 states have internal predecessors, (4670), 693 states have call successors, (693), 272 states have call predecessors, (693), 290 states have return successors, (729), 669 states have call predecessors, (729), 693 states have call successors, (729) [2023-12-15 23:10:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4679 states to 4679 states and 6092 transitions. [2023-12-15 23:10:41,490 INFO L78 Accepts]: Start accepts. Automaton has 4679 states and 6092 transitions. Word has length 339 [2023-12-15 23:10:41,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:41,490 INFO L495 AbstractCegarLoop]: Abstraction has 4679 states and 6092 transitions. [2023-12-15 23:10:41,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.571428571428571) internal successors, (240), 24 states have internal predecessors, (240), 8 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 11 states have call predecessors, (51), 8 states have call successors, (51) [2023-12-15 23:10:41,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4679 states and 6092 transitions. [2023-12-15 23:10:41,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-15 23:10:41,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:41,499 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 23:10:41,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 23:10:41,705 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,SelfDestructingSolverStorable38 [2023-12-15 23:10:41,706 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:41,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:41,706 INFO L85 PathProgramCache]: Analyzing trace with hash 579861699, now seen corresponding path program 1 times [2023-12-15 23:10:41,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:41,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776394731] [2023-12-15 23:10:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:41,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-15 23:10:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-15 23:10:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-15 23:10:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-15 23:10:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-15 23:10:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-15 23:10:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-15 23:10:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-12-15 23:10:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-12-15 23:10:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2023-12-15 23:10:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-12-15 23:10:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,882 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2023-12-15 23:10:41,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:41,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776394731] [2023-12-15 23:10:41,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776394731] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:41,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923119073] [2023-12-15 23:10:41,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:41,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:41,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:41,884 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) [2023-12-15 23:10:41,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 23:10:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:42,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 23:10:42,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2023-12-15 23:10:42,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:42,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923119073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:42,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:42,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2023-12-15 23:10:42,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104889588] [2023-12-15 23:10:42,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:42,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:10:42,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:42,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:10:42,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:10:42,167 INFO L87 Difference]: Start difference. First operand 4679 states and 6092 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-15 23:10:42,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:42,746 INFO L93 Difference]: Finished difference Result 9644 states and 12669 transitions. [2023-12-15 23:10:42,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 23:10:42,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 339 [2023-12-15 23:10:42,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:42,759 INFO L225 Difference]: With dead ends: 9644 [2023-12-15 23:10:42,760 INFO L226 Difference]: Without dead ends: 5450 [2023-12-15 23:10:42,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:10:42,766 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 160 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:42,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 2299 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:10:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5450 states. [2023-12-15 23:10:43,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5450 to 3518. [2023-12-15 23:10:43,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3518 states, 2819 states have (on average 1.241575026605179) internal successors, (3500), 2861 states have internal predecessors, (3500), 474 states have call successors, (474), 206 states have call predecessors, (474), 224 states have return successors, (498), 450 states have call predecessors, (498), 474 states have call successors, (498) [2023-12-15 23:10:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3518 states to 3518 states and 4472 transitions. [2023-12-15 23:10:43,038 INFO L78 Accepts]: Start accepts. Automaton has 3518 states and 4472 transitions. Word has length 339 [2023-12-15 23:10:43,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:43,039 INFO L495 AbstractCegarLoop]: Abstraction has 3518 states and 4472 transitions. [2023-12-15 23:10:43,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-15 23:10:43,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3518 states and 4472 transitions. [2023-12-15 23:10:43,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-15 23:10:43,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:43,046 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:43,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-15 23:10:43,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:43,252 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:43,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:43,252 INFO L85 PathProgramCache]: Analyzing trace with hash -857896880, now seen corresponding path program 1 times [2023-12-15 23:10:43,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:43,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305816544] [2023-12-15 23:10:43,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:43,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:43,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-15 23:10:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-12-15 23:10:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-15 23:10:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-15 23:10:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-15 23:10:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-12-15 23:10:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2023-12-15 23:10:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2023-12-15 23:10:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-12-15 23:10:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-12-15 23:10:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-12-15 23:10:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,080 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2023-12-15 23:10:44,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:44,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305816544] [2023-12-15 23:10:44,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305816544] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:44,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507667925] [2023-12-15 23:10:44,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:44,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:44,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:44,097 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) [2023-12-15 23:10:44,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 23:10:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:44,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-15 23:10:44,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 190 proven. 102 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-15 23:10:44,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:10:45,024 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 33 proven. 69 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-12-15 23:10:45,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507667925] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:10:45,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:10:45,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 30 [2023-12-15 23:10:45,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113603369] [2023-12-15 23:10:45,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:10:45,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-15 23:10:45,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:45,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-15 23:10:45,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2023-12-15 23:10:45,028 INFO L87 Difference]: Start difference. First operand 3518 states and 4472 transitions. Second operand has 30 states, 30 states have (on average 8.166666666666666) internal successors, (245), 26 states have internal predecessors, (245), 9 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 12 states have call predecessors, (54), 9 states have call successors, (54) Received shutdown request... [2023-12-15 23:11:09,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 377 states. [2023-12-15 23:11:09,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1150 GetRequests, 745 SyntacticMatches, 1 SemanticMatches, 403 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69667 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=14195, Invalid=149425, Unknown=0, NotChecked=0, Total=163620 [2023-12-15 23:11:09,331 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 4502 mSDsluCounter, 7279 mSDsCounter, 0 mSdLazyCounter, 8675 mSolverCounterSat, 1143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4502 SdHoareTripleChecker+Valid, 7858 SdHoareTripleChecker+Invalid, 9818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1143 IncrementalHoareTripleChecker+Valid, 8675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-15 23:11:09,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4502 Valid, 7858 Invalid, 9818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1143 Valid, 8675 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-15 23:11:09,333 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:11:09,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-15 23:11:09,353 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:11:09,354 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 [2023-12-15 23:11:09,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:11:09,541 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (3518states) and FLOYD_HOARE automaton (currently 377 states, 30 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-17-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-16-2-1 context. [2023-12-15 23:11:09,545 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] [2023-12-15 23:11:09,547 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:11:09,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:11:09 BoogieIcfgContainer [2023-12-15 23:11:09,548 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:11:09,549 INFO L158 Benchmark]: Toolchain (without parser) took 59936.85ms. Allocated memory was 330.3MB in the beginning and 1.0GB in the end (delta: 673.2MB). Free memory was 276.5MB in the beginning and 471.6MB in the end (delta: -195.1MB). Peak memory consumption was 479.2MB. Max. memory is 8.0GB. [2023-12-15 23:11:09,549 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory is still 134.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:11:09,549 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.54ms. Allocated memory is still 330.3MB. Free memory was 276.3MB in the beginning and 259.7MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-15 23:11:09,549 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.72ms. Allocated memory is still 330.3MB. Free memory was 259.7MB in the beginning and 256.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:11:09,549 INFO L158 Benchmark]: Boogie Preprocessor took 86.20ms. Allocated memory is still 330.3MB. Free memory was 256.6MB in the beginning and 253.2MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:11:09,550 INFO L158 Benchmark]: RCFGBuilder took 503.40ms. Allocated memory is still 330.3MB. Free memory was 252.8MB in the beginning and 219.9MB in the end (delta: 32.9MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-15 23:11:09,550 INFO L158 Benchmark]: TraceAbstraction took 59031.98ms. Allocated memory was 330.3MB in the beginning and 1.0GB in the end (delta: 673.2MB). Free memory was 219.3MB in the beginning and 471.6MB in the end (delta: -252.3MB). Peak memory consumption was 421.5MB. Max. memory is 8.0GB. [2023-12-15 23:11:09,550 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 183.5MB. Free memory is still 134.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 254.54ms. Allocated memory is still 330.3MB. Free memory was 276.3MB in the beginning and 259.7MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 54.72ms. Allocated memory is still 330.3MB. Free memory was 259.7MB in the beginning and 256.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 86.20ms. Allocated memory is still 330.3MB. Free memory was 256.6MB in the beginning and 253.2MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 503.40ms. Allocated memory is still 330.3MB. Free memory was 252.8MB in the beginning and 219.9MB in the end (delta: 32.9MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * TraceAbstraction took 59031.98ms. Allocated memory was 330.3MB in the beginning and 1.0GB in the end (delta: 673.2MB). Free memory was 219.3MB in the beginning and 471.6MB in the end (delta: -252.3MB). Peak memory consumption was 421.5MB. 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: 531]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 531). Cancelled while NwaCegarLoop was constructing difference of abstraction (3518states) and FLOYD_HOARE automaton (currently 377 states, 30 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-17-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-16-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 170 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.0s, OverallIterations: 41, TraceHistogramMax: 12, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 41.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15915 SdHoareTripleChecker+Valid, 13.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15592 mSDsluCounter, 53539 SdHoareTripleChecker+Invalid, 11.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42264 mSDsCounter, 3739 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23446 IncrementalHoareTripleChecker+Invalid, 27185 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3739 mSolverCounterUnsat, 11275 mSDtfsCounter, 23446 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7278 GetRequests, 6391 SyntacticMatches, 14 SemanticMatches, 872 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86261 ImplicationChecksByTransitivity, 25.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4679occurred in iteration=39, InterpolantAutomatonStates: 460, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 40 MinimizatonAttempts, 8675 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 11869 NumberOfCodeBlocks, 11869 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 12972 ConstructedInterpolants, 0 QuantifiedInterpolants, 21026 SizeOfPredicates, 42 NumberOfNonLiveVariables, 12884 ConjunctsInSsa, 202 ConjunctsInUnsatCore, 61 InterpolantComputations, 37 PerfectInterpolantSequences, 31788/32299 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