/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.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:09:58,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:09:58,914 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 23:09:58,918 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:09:58,918 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:09:58,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:09:58,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:09:58,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:09:58,941 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:09:58,944 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:09:58,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:09:58,945 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:09:58,945 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:09:58,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:09:58,946 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:09:58,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:09:58,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:09:58,947 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:09:58,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:09:58,952 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:09:58,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:09:58,952 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:09:58,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:09:58,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:09:58,953 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:09:58,953 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:09:58,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:09:58,953 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:09:58,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:09:58,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:09:58,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:09:58,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:09:58,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:09:58,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:09:58,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:09:58,955 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:09:58,955 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:09:58,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:09:58,956 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:09:58,956 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:09:58,956 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:09:58,956 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:09:58,956 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:09:58,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:09:59,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:09:59,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:09:59,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:09:59,170 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:09:59,170 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:09:59,171 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.BOUNDED-10.pals.c [2023-12-15 23:10:00,195 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:10:00,383 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:10:00,384 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.BOUNDED-10.pals.c [2023-12-15 23:10:00,394 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8bb1081f/8dae20e38f5e491badd79db2b9c10f04/FLAG15498e4e2 [2023-12-15 23:10:00,406 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8bb1081f/8dae20e38f5e491badd79db2b9c10f04 [2023-12-15 23:10:00,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:10:00,410 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:10:00,412 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:10:00,412 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:10:00,416 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:10:00,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:10:00" (1/1) ... [2023-12-15 23:10:00,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13201a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:00, skipping insertion in model container [2023-12-15 23:10:00,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:10:00" (1/1) ... [2023-12-15 23:10:00,458 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:10:00,674 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.1.ufo.BOUNDED-10.pals.c[11956,11969] [2023-12-15 23:10:00,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:10:00,686 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:10:00,723 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.1.ufo.BOUNDED-10.pals.c[11956,11969] [2023-12-15 23:10:00,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:10:00,734 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:10:00,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:00 WrapperNode [2023-12-15 23:10:00,735 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:10:00,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:10:00,736 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:10:00,736 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:10:00,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:00" (1/1) ... [2023-12-15 23:10:00,749 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:00" (1/1) ... [2023-12-15 23:10:00,795 INFO L138 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 412 [2023-12-15 23:10:00,796 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:10:00,797 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:10:00,797 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:10:00,797 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:10:00,805 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:00" (1/1) ... [2023-12-15 23:10:00,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:00" (1/1) ... [2023-12-15 23:10:00,810 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:00" (1/1) ... [2023-12-15 23:10:00,821 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 23:10:00,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:00" (1/1) ... [2023-12-15 23:10:00,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:00" (1/1) ... [2023-12-15 23:10:00,828 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:00" (1/1) ... [2023-12-15 23:10:00,832 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:00" (1/1) ... [2023-12-15 23:10:00,833 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:00" (1/1) ... [2023-12-15 23:10:00,835 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:00" (1/1) ... [2023-12-15 23:10:00,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:10:00,850 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:10:00,850 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:10:00,850 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:10:00,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:00" (1/1) ... [2023-12-15 23:10:00,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:10:00,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:00,913 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 23:10:00,939 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 23:10:00,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:10:00,946 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2023-12-15 23:10:00,947 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2023-12-15 23:10:00,947 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-12-15 23:10:00,947 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-12-15 23:10:00,948 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2023-12-15 23:10:00,949 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2023-12-15 23:10:00,949 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2023-12-15 23:10:00,949 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2023-12-15 23:10:00,949 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2023-12-15 23:10:00,950 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2023-12-15 23:10:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:10:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:10:00,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:10:01,056 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:10:01,058 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:10:01,479 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:10:01,516 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:10:01,516 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-15 23:10:01,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:10:01 BoogieIcfgContainer [2023-12-15 23:10:01,517 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:10:01,518 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:10:01,518 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:10:01,520 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:10:01,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:10:00" (1/3) ... [2023-12-15 23:10:01,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0d92c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:10:01, skipping insertion in model container [2023-12-15 23:10:01,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:10:00" (2/3) ... [2023-12-15 23:10:01,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0d92c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:10:01, skipping insertion in model container [2023-12-15 23:10:01,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:10:01" (3/3) ... [2023-12-15 23:10:01,522 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.1.ufo.BOUNDED-10.pals.c [2023-12-15 23:10:01,534 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:10:01,534 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:10:01,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:10:01,584 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;@6326bd2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:10:01,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:10:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 132 states have (on average 1.621212121212121) internal successors, (214), 136 states have internal predecessors, (214), 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 23:10:01,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-15 23:10:01,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:01,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:01,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:01,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:01,599 INFO L85 PathProgramCache]: Analyzing trace with hash -409509753, now seen corresponding path program 1 times [2023-12-15 23:10:01,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:01,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77301766] [2023-12-15 23:10:01,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:01,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:01,805 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 23:10:01,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:01,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77301766] [2023-12-15 23:10:01,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77301766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:01,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:01,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:01,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457236136] [2023-12-15 23:10:01,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:01,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:01,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:01,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:01,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:01,830 INFO L87 Difference]: Start difference. First operand has 171 states, 132 states have (on average 1.621212121212121) internal successors, (214), 136 states have internal predecessors, (214), 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 23:10:01,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:01,918 INFO L93 Difference]: Finished difference Result 348 states and 600 transitions. [2023-12-15 23:10:01,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:01,923 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 23:10:01,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:01,933 INFO L225 Difference]: With dead ends: 348 [2023-12-15 23:10:01,933 INFO L226 Difference]: Without dead ends: 177 [2023-12-15 23:10:01,939 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 23:10:01,943 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 18 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 769 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 23:10:01,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 769 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:01,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-15 23:10:01,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2023-12-15 23:10:01,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 136 states have (on average 1.5514705882352942) internal successors, (211), 139 states have internal predecessors, (211), 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 23:10:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 275 transitions. [2023-12-15 23:10:02,000 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 275 transitions. Word has length 14 [2023-12-15 23:10:02,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:02,000 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 275 transitions. [2023-12-15 23:10:02,000 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 23:10:02,000 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 275 transitions. [2023-12-15 23:10:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-15 23:10:02,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:02,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:02,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:10:02,002 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:02,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:02,003 INFO L85 PathProgramCache]: Analyzing trace with hash 247426362, now seen corresponding path program 1 times [2023-12-15 23:10:02,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:02,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455996235] [2023-12-15 23:10:02,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:02,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:02,055 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 23:10:02,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:02,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455996235] [2023-12-15 23:10:02,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455996235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:02,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:02,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:02,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182866712] [2023-12-15 23:10:02,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:02,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:02,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:02,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:02,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:02,057 INFO L87 Difference]: Start difference. First operand 175 states and 275 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 23:10:02,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:02,103 INFO L93 Difference]: Finished difference Result 364 states and 574 transitions. [2023-12-15 23:10:02,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:02,104 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 23:10:02,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:02,106 INFO L225 Difference]: With dead ends: 364 [2023-12-15 23:10:02,106 INFO L226 Difference]: Without dead ends: 191 [2023-12-15 23:10:02,106 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 23:10:02,107 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 25 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 786 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 23:10:02,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 786 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:02,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-12-15 23:10:02,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 188. [2023-12-15 23:10:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 147 states have (on average 1.530612244897959) internal successors, (225), 150 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 23:10:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 291 transitions. [2023-12-15 23:10:02,117 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 291 transitions. Word has length 15 [2023-12-15 23:10:02,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:02,117 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 291 transitions. [2023-12-15 23:10:02,118 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 23:10:02,118 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 291 transitions. [2023-12-15 23:10:02,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-15 23:10:02,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:02,119 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 23:10:02,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:10:02,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:02,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:02,119 INFO L85 PathProgramCache]: Analyzing trace with hash 803678296, now seen corresponding path program 1 times [2023-12-15 23:10:02,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:02,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162766936] [2023-12-15 23:10:02,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:02,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:02,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:02,195 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 23:10:02,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:02,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162766936] [2023-12-15 23:10:02,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162766936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:02,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:02,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:10:02,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722420574] [2023-12-15 23:10:02,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:02,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:10:02,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:02,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:10:02,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:10:02,197 INFO L87 Difference]: Start difference. First operand 188 states and 291 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 23:10:02,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:02,222 INFO L93 Difference]: Finished difference Result 396 states and 620 transitions. [2023-12-15 23:10:02,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:10:02,224 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 23:10:02,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:02,225 INFO L225 Difference]: With dead ends: 396 [2023-12-15 23:10:02,225 INFO L226 Difference]: Without dead ends: 217 [2023-12-15 23:10:02,226 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 23:10:02,227 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 22 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 532 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 23:10:02,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 532 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:02,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-15 23:10:02,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 190. [2023-12-15 23:10:02,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 149 states have (on average 1.523489932885906) internal successors, (227), 152 states have internal predecessors, (227), 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 23:10:02,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 293 transitions. [2023-12-15 23:10:02,238 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 293 transitions. Word has length 22 [2023-12-15 23:10:02,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:02,238 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 293 transitions. [2023-12-15 23:10:02,238 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 23:10:02,240 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 293 transitions. [2023-12-15 23:10:02,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-15 23:10:02,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:02,241 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 23:10:02,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:10:02,241 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:02,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1522670071, now seen corresponding path program 1 times [2023-12-15 23:10:02,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:02,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764436946] [2023-12-15 23:10:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:02,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:02,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:02,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:02,301 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 23:10:02,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:02,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764436946] [2023-12-15 23:10:02,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764436946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:02,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:02,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:02,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848226368] [2023-12-15 23:10:02,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:02,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:02,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:02,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:02,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:02,303 INFO L87 Difference]: Start difference. First operand 190 states and 293 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 23:10:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:02,362 INFO L93 Difference]: Finished difference Result 426 states and 674 transitions. [2023-12-15 23:10:02,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:02,363 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 23:10:02,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:02,366 INFO L225 Difference]: With dead ends: 426 [2023-12-15 23:10:02,366 INFO L226 Difference]: Without dead ends: 286 [2023-12-15 23:10:02,369 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 23:10:02,373 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 119 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 782 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 23:10:02,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 782 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:02,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-12-15 23:10:02,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 190. [2023-12-15 23:10:02,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 149 states have (on average 1.4966442953020134) internal successors, (223), 152 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 23:10:02,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 289 transitions. [2023-12-15 23:10:02,393 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 289 transitions. Word has length 30 [2023-12-15 23:10:02,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:02,393 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 289 transitions. [2023-12-15 23:10:02,393 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 23:10:02,393 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 289 transitions. [2023-12-15 23:10:02,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-15 23:10:02,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:02,394 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 23:10:02,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:10:02,396 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:02,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:02,397 INFO L85 PathProgramCache]: Analyzing trace with hash -114669019, now seen corresponding path program 1 times [2023-12-15 23:10:02,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:02,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778228245] [2023-12-15 23:10:02,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:02,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:02,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:02,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:02,501 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 23:10:02,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:02,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778228245] [2023-12-15 23:10:02,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778228245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:02,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:02,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:10:02,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225750778] [2023-12-15 23:10:02,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:02,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:10:02,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:02,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:10:02,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:02,503 INFO L87 Difference]: Start difference. First operand 190 states and 289 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 23:10:02,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:02,537 INFO L93 Difference]: Finished difference Result 371 states and 568 transitions. [2023-12-15 23:10:02,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:02,537 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 23:10:02,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:02,540 INFO L225 Difference]: With dead ends: 371 [2023-12-15 23:10:02,540 INFO L226 Difference]: Without dead ends: 192 [2023-12-15 23:10:02,540 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 23:10:02,541 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 0 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1040 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 23:10:02,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1040 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:02,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-15 23:10:02,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2023-12-15 23:10:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 149 states have (on average 1.4899328859060403) internal successors, (222), 152 states have internal predecessors, (222), 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 23:10:02,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 288 transitions. [2023-12-15 23:10:02,548 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 288 transitions. Word has length 31 [2023-12-15 23:10:02,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:02,548 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 288 transitions. [2023-12-15 23:10:02,548 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 23:10:02,548 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 288 transitions. [2023-12-15 23:10:02,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-15 23:10:02,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:02,551 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 23:10:02,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:10:02,551 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:02,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:02,552 INFO L85 PathProgramCache]: Analyzing trace with hash -793075601, now seen corresponding path program 1 times [2023-12-15 23:10:02,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:02,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086037990] [2023-12-15 23:10:02,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:02,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:02,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:02,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:02,615 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 23:10:02,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:02,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086037990] [2023-12-15 23:10:02,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086037990] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:02,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175403363] [2023-12-15 23:10:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:02,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:02,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:02,624 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 23:10:02,660 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 23:10:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:02,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 23:10:02,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:02,755 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 23:10:02,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:10:02,796 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 23:10:02,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175403363] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:10:02,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:10:02,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-12-15 23:10:02,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670889101] [2023-12-15 23:10:02,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:10:02,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:10:02,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:02,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:10:02,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:02,798 INFO L87 Difference]: Start difference. First operand 190 states and 288 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 23:10:02,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:02,839 INFO L93 Difference]: Finished difference Result 429 states and 664 transitions. [2023-12-15 23:10:02,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:02,840 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 23:10:02,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:02,841 INFO L225 Difference]: With dead ends: 429 [2023-12-15 23:10:02,841 INFO L226 Difference]: Without dead ends: 249 [2023-12-15 23:10:02,842 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 23:10:02,842 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 76 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:02,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 771 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:02,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-12-15 23:10:02,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 243. [2023-12-15 23:10:02,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 192 states have (on average 1.4635416666666667) internal successors, (281), 195 states have internal predecessors, (281), 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 23:10:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 367 transitions. [2023-12-15 23:10:02,852 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 367 transitions. Word has length 34 [2023-12-15 23:10:02,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:02,852 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 367 transitions. [2023-12-15 23:10:02,852 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 23:10:02,852 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 367 transitions. [2023-12-15 23:10:02,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-15 23:10:02,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:02,853 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 23:10:02,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 23:10:03,058 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 23:10:03,059 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:03,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:03,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2086166001, now seen corresponding path program 2 times [2023-12-15 23:10:03,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:03,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561909940] [2023-12-15 23:10:03,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:03,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,113 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 23:10:03,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:03,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561909940] [2023-12-15 23:10:03,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561909940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:03,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:03,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:03,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816285658] [2023-12-15 23:10:03,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:03,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:03,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:03,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:03,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:03,116 INFO L87 Difference]: Start difference. First operand 243 states and 367 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 23:10:03,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:03,152 INFO L93 Difference]: Finished difference Result 467 states and 725 transitions. [2023-12-15 23:10:03,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:03,153 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 23:10:03,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:03,155 INFO L225 Difference]: With dead ends: 467 [2023-12-15 23:10:03,155 INFO L226 Difference]: Without dead ends: 252 [2023-12-15 23:10:03,157 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 23:10:03,157 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 19 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 765 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 23:10:03,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 765 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:03,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-15 23:10:03,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 250. [2023-12-15 23:10:03,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 198 states have (on average 1.4595959595959596) internal successors, (289), 201 states have internal predecessors, (289), 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 23:10:03,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 375 transitions. [2023-12-15 23:10:03,171 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 375 transitions. Word has length 56 [2023-12-15 23:10:03,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:03,171 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 375 transitions. [2023-12-15 23:10:03,171 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 23:10:03,172 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 375 transitions. [2023-12-15 23:10:03,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-15 23:10:03,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:03,173 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 23:10:03,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:10:03,174 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:03,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:03,174 INFO L85 PathProgramCache]: Analyzing trace with hash 2063557726, now seen corresponding path program 1 times [2023-12-15 23:10:03,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:03,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836556444] [2023-12-15 23:10:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:03,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,238 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 23:10:03,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:03,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836556444] [2023-12-15 23:10:03,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836556444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:03,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:03,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:03,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066170891] [2023-12-15 23:10:03,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:03,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:03,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:03,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:03,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:03,241 INFO L87 Difference]: Start difference. First operand 250 states and 375 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 23:10:03,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:03,286 INFO L93 Difference]: Finished difference Result 511 states and 777 transitions. [2023-12-15 23:10:03,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:03,286 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 23:10:03,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:03,289 INFO L225 Difference]: With dead ends: 511 [2023-12-15 23:10:03,289 INFO L226 Difference]: Without dead ends: 289 [2023-12-15 23:10:03,289 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 23:10:03,290 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 24 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 778 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 23:10:03,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 778 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:03,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-15 23:10:03,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 286. [2023-12-15 23:10:03,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 230 states have (on average 1.4173913043478261) internal successors, (326), 233 states have internal predecessors, (326), 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 23:10:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 418 transitions. [2023-12-15 23:10:03,303 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 418 transitions. Word has length 56 [2023-12-15 23:10:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:03,303 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 418 transitions. [2023-12-15 23:10:03,303 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 23:10:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 418 transitions. [2023-12-15 23:10:03,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 23:10:03,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:03,304 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 23:10:03,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:10:03,305 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:03,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:03,305 INFO L85 PathProgramCache]: Analyzing trace with hash 648603620, now seen corresponding path program 1 times [2023-12-15 23:10:03,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:03,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927140246] [2023-12-15 23:10:03,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:03,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,391 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 23:10:03,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:03,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927140246] [2023-12-15 23:10:03,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927140246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:03,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:03,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:10:03,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128848209] [2023-12-15 23:10:03,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:03,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:10:03,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:03,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:10:03,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:03,393 INFO L87 Difference]: Start difference. First operand 286 states and 418 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 23:10:03,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:03,422 INFO L93 Difference]: Finished difference Result 522 states and 776 transitions. [2023-12-15 23:10:03,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:03,422 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 23:10:03,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:03,429 INFO L225 Difference]: With dead ends: 522 [2023-12-15 23:10:03,429 INFO L226 Difference]: Without dead ends: 288 [2023-12-15 23:10:03,429 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 23:10:03,431 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 0 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1039 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 23:10:03,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1039 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:03,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-12-15 23:10:03,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 286. [2023-12-15 23:10:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 230 states have (on average 1.4043478260869566) internal successors, (323), 233 states have internal predecessors, (323), 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 23:10:03,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 415 transitions. [2023-12-15 23:10:03,441 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 415 transitions. Word has length 74 [2023-12-15 23:10:03,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:03,441 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 415 transitions. [2023-12-15 23:10:03,441 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 23:10:03,442 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 415 transitions. [2023-12-15 23:10:03,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-15 23:10:03,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:03,442 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 23:10:03,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:10:03,443 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:03,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:03,443 INFO L85 PathProgramCache]: Analyzing trace with hash -77908722, now seen corresponding path program 1 times [2023-12-15 23:10:03,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:03,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182409582] [2023-12-15 23:10:03,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:03,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,531 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 23:10:03,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:03,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182409582] [2023-12-15 23:10:03,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182409582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:03,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:03,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:03,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857906531] [2023-12-15 23:10:03,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:03,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:03,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:03,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:03,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:03,533 INFO L87 Difference]: Start difference. First operand 286 states and 415 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 23:10:03,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:03,574 INFO L93 Difference]: Finished difference Result 559 states and 832 transitions. [2023-12-15 23:10:03,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:03,574 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 23:10:03,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:03,577 INFO L225 Difference]: With dead ends: 559 [2023-12-15 23:10:03,577 INFO L226 Difference]: Without dead ends: 330 [2023-12-15 23:10:03,578 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 23:10:03,578 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 25 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 778 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 23:10:03,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 778 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:03,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-15 23:10:03,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 327. [2023-12-15 23:10:03,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 267 states have (on average 1.3670411985018727) internal successors, (365), 270 states have internal predecessors, (365), 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 23:10:03,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 463 transitions. [2023-12-15 23:10:03,591 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 463 transitions. Word has length 103 [2023-12-15 23:10:03,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:03,591 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 463 transitions. [2023-12-15 23:10:03,591 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 23:10:03,591 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 463 transitions. [2023-12-15 23:10:03,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-15 23:10:03,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:03,595 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 23:10:03,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:10:03,595 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:03,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:03,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1056143899, now seen corresponding path program 1 times [2023-12-15 23:10:03,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:03,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652481058] [2023-12-15 23:10:03,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:03,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,666 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 23:10:03,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:03,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652481058] [2023-12-15 23:10:03,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652481058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:03,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:03,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:03,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711481121] [2023-12-15 23:10:03,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:03,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:03,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:03,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:03,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:03,667 INFO L87 Difference]: Start difference. First operand 327 states and 463 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 23:10:03,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:03,701 INFO L93 Difference]: Finished difference Result 585 states and 852 transitions. [2023-12-15 23:10:03,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:10:03,702 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 23:10:03,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:03,703 INFO L225 Difference]: With dead ends: 585 [2023-12-15 23:10:03,703 INFO L226 Difference]: Without dead ends: 321 [2023-12-15 23:10:03,704 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 23:10:03,705 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 15 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 738 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 23:10:03,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 738 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:03,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-12-15 23:10:03,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2023-12-15 23:10:03,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 262 states have (on average 1.3473282442748091) internal successors, (353), 265 states have internal predecessors, (353), 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 23:10:03,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 449 transitions. [2023-12-15 23:10:03,715 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 449 transitions. Word has length 104 [2023-12-15 23:10:03,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:03,716 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 449 transitions. [2023-12-15 23:10:03,716 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 23:10:03,716 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 449 transitions. [2023-12-15 23:10:03,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-15 23:10:03,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:03,718 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 23:10:03,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:10:03,718 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:03,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:03,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1309382448, now seen corresponding path program 1 times [2023-12-15 23:10:03,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:03,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269146815] [2023-12-15 23:10:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:03,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,799 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 23:10:03,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:03,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269146815] [2023-12-15 23:10:03,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269146815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:03,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:03,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:10:03,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888650682] [2023-12-15 23:10:03,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:03,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:10:03,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:03,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:10:03,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:03,800 INFO L87 Difference]: Start difference. First operand 321 states and 449 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 23:10:03,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:03,820 INFO L93 Difference]: Finished difference Result 560 states and 801 transitions. [2023-12-15 23:10:03,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:03,821 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 23:10:03,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:03,822 INFO L225 Difference]: With dead ends: 560 [2023-12-15 23:10:03,822 INFO L226 Difference]: Without dead ends: 323 [2023-12-15 23:10:03,822 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 23:10:03,824 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 0 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1023 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 23:10:03,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1023 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-12-15 23:10:03,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 321. [2023-12-15 23:10:03,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 262 states have (on average 1.3358778625954197) internal successors, (350), 265 states have internal predecessors, (350), 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 23:10:03,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 446 transitions. [2023-12-15 23:10:03,842 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 446 transitions. Word has length 123 [2023-12-15 23:10:03,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:03,842 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 446 transitions. [2023-12-15 23:10:03,843 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 23:10:03,843 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 446 transitions. [2023-12-15 23:10:03,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-15 23:10:03,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:03,844 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 23:10:03,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:10:03,844 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:03,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:03,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1299230210, now seen corresponding path program 1 times [2023-12-15 23:10:03,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:03,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265602438] [2023-12-15 23:10:03,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:03,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:03,909 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 23:10:03,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:03,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265602438] [2023-12-15 23:10:03,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265602438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:03,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:03,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:03,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608422306] [2023-12-15 23:10:03,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:03,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:03,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:03,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:03,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:03,911 INFO L87 Difference]: Start difference. First operand 321 states and 446 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 23:10:03,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:03,947 INFO L93 Difference]: Finished difference Result 523 states and 761 transitions. [2023-12-15 23:10:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:10:03,947 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 23:10:03,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:03,948 INFO L225 Difference]: With dead ends: 523 [2023-12-15 23:10:03,948 INFO L226 Difference]: Without dead ends: 319 [2023-12-15 23:10:03,949 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 23:10:03,949 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 13 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 706 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 23:10:03,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 706 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:03,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-12-15 23:10:03,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2023-12-15 23:10:03,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 261 states have (on average 1.3333333333333333) internal successors, (348), 264 states have internal predecessors, (348), 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 23:10:03,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 442 transitions. [2023-12-15 23:10:03,957 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 442 transitions. Word has length 156 [2023-12-15 23:10:03,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:03,958 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 442 transitions. [2023-12-15 23:10:03,958 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 23:10:03,958 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 442 transitions. [2023-12-15 23:10:03,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 23:10:03,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:03,959 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 23:10:03,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:10:03,959 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:03,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:03,960 INFO L85 PathProgramCache]: Analyzing trace with hash -45969848, now seen corresponding path program 1 times [2023-12-15 23:10:03,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:03,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141188776] [2023-12-15 23:10:03,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:03,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,042 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 23:10:04,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:04,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141188776] [2023-12-15 23:10:04,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141188776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:04,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:04,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:04,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36261112] [2023-12-15 23:10:04,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:04,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:04,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:04,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:04,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:04,044 INFO L87 Difference]: Start difference. First operand 319 states and 442 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 23:10:04,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:04,082 INFO L93 Difference]: Finished difference Result 463 states and 657 transitions. [2023-12-15 23:10:04,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:04,083 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 23:10:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:04,084 INFO L225 Difference]: With dead ends: 463 [2023-12-15 23:10:04,084 INFO L226 Difference]: Without dead ends: 302 [2023-12-15 23:10:04,085 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 23:10:04,085 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 35 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 687 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 23:10:04,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 687 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:04,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-12-15 23:10:04,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2023-12-15 23:10:04,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 247 states have (on average 1.3238866396761133) internal successors, (327), 250 states have internal predecessors, (327), 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 23:10:04,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 415 transitions. [2023-12-15 23:10:04,093 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 415 transitions. Word has length 171 [2023-12-15 23:10:04,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:04,093 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 415 transitions. [2023-12-15 23:10:04,093 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 23:10:04,093 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 415 transitions. [2023-12-15 23:10:04,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-15 23:10:04,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:04,095 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 23:10:04,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:10:04,095 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:04,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:04,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2144494445, now seen corresponding path program 1 times [2023-12-15 23:10:04,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:04,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732840303] [2023-12-15 23:10:04,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:04,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,183 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 23:10:04,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:04,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732840303] [2023-12-15 23:10:04,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732840303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:04,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:04,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:04,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052570470] [2023-12-15 23:10:04,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:04,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:04,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:04,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:04,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:04,186 INFO L87 Difference]: Start difference. First operand 302 states and 415 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 23:10:04,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:04,228 INFO L93 Difference]: Finished difference Result 446 states and 630 transitions. [2023-12-15 23:10:04,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:04,228 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 23:10:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:04,230 INFO L225 Difference]: With dead ends: 446 [2023-12-15 23:10:04,230 INFO L226 Difference]: Without dead ends: 283 [2023-12-15 23:10:04,232 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 23:10:04,232 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 30 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 691 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 23:10:04,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 691 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:04,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-15 23:10:04,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-12-15 23:10:04,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 231 states have (on average 1.316017316017316) internal successors, (304), 234 states have internal predecessors, (304), 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 23:10:04,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 386 transitions. [2023-12-15 23:10:04,255 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 386 transitions. Word has length 173 [2023-12-15 23:10:04,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:04,255 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 386 transitions. [2023-12-15 23:10:04,255 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 23:10:04,255 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 386 transitions. [2023-12-15 23:10:04,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-15 23:10:04,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:04,257 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 23:10:04,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:10:04,257 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:04,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:04,257 INFO L85 PathProgramCache]: Analyzing trace with hash -307436632, now seen corresponding path program 1 times [2023-12-15 23:10:04,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:04,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489712647] [2023-12-15 23:10:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:04,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,371 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 23:10:04,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:04,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489712647] [2023-12-15 23:10:04,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489712647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:04,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:04,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:10:04,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584549232] [2023-12-15 23:10:04,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:04,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:10:04,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:04,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:10:04,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:04,373 INFO L87 Difference]: Start difference. First operand 283 states and 386 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 23:10:04,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:04,396 INFO L93 Difference]: Finished difference Result 426 states and 600 transitions. [2023-12-15 23:10:04,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:04,396 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 23:10:04,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:04,398 INFO L225 Difference]: With dead ends: 426 [2023-12-15 23:10:04,398 INFO L226 Difference]: Without dead ends: 283 [2023-12-15 23:10:04,398 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 23:10:04,399 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 0 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1001 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 23:10:04,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1001 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:04,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-15 23:10:04,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-12-15 23:10:04,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 231 states have (on average 1.29004329004329) internal successors, (298), 234 states have internal predecessors, (298), 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 23:10:04,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 380 transitions. [2023-12-15 23:10:04,409 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 380 transitions. Word has length 174 [2023-12-15 23:10:04,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:04,410 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 380 transitions. [2023-12-15 23:10:04,410 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 23:10:04,411 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 380 transitions. [2023-12-15 23:10:04,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-15 23:10:04,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:04,413 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 23:10:04,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:10:04,413 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:04,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:04,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2068374447, now seen corresponding path program 1 times [2023-12-15 23:10:04,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:04,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520333162] [2023-12-15 23:10:04,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:04,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,509 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 23:10:04,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:04,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520333162] [2023-12-15 23:10:04,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520333162] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:04,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260916433] [2023-12-15 23:10:04,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:04,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:04,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:04,511 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 23:10:04,514 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 23:10:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:04,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 23:10:04,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:04,695 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 23:10:04,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:10:04,784 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 23:10:04,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260916433] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:04,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 23:10:04,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2023-12-15 23:10:04,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844892510] [2023-12-15 23:10:04,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:04,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:04,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:04,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:04,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:04,786 INFO L87 Difference]: Start difference. First operand 283 states and 380 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 23:10:04,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:04,823 INFO L93 Difference]: Finished difference Result 447 states and 622 transitions. [2023-12-15 23:10:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:10:04,823 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 23:10:04,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:04,825 INFO L225 Difference]: With dead ends: 447 [2023-12-15 23:10:04,825 INFO L226 Difference]: Without dead ends: 262 [2023-12-15 23:10:04,825 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 23:10:04,826 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 30 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 473 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 23:10:04,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 473 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:04,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-15 23:10:04,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2023-12-15 23:10:04,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 213 states have (on average 1.2816901408450705) internal successors, (273), 216 states have internal predecessors, (273), 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 23:10:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 349 transitions. [2023-12-15 23:10:04,835 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 349 transitions. Word has length 181 [2023-12-15 23:10:04,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:04,836 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 349 transitions. [2023-12-15 23:10:04,836 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 23:10:04,836 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 349 transitions. [2023-12-15 23:10:04,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-15 23:10:04,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:04,838 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 23:10:04,859 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 23:10:05,051 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 23:10:05,051 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:05,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:05,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2082007262, now seen corresponding path program 1 times [2023-12-15 23:10:05,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:05,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303220456] [2023-12-15 23:10:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:05,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,195 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 23:10:05,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:05,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303220456] [2023-12-15 23:10:05,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303220456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:05,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:05,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:05,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177746668] [2023-12-15 23:10:05,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:05,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:05,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:05,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:05,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:05,196 INFO L87 Difference]: Start difference. First operand 262 states and 349 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 23:10:05,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:05,220 INFO L93 Difference]: Finished difference Result 404 states and 564 transitions. [2023-12-15 23:10:05,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:05,221 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 23:10:05,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:05,222 INFO L225 Difference]: With dead ends: 404 [2023-12-15 23:10:05,222 INFO L226 Difference]: Without dead ends: 268 [2023-12-15 23:10:05,222 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 23:10:05,223 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 6 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 731 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 23:10:05,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 731 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-15 23:10:05,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2023-12-15 23:10:05,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 216 states have (on average 1.2777777777777777) internal successors, (276), 219 states have internal predecessors, (276), 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 23:10:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 352 transitions. [2023-12-15 23:10:05,232 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 352 transitions. Word has length 205 [2023-12-15 23:10:05,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:05,234 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 352 transitions. [2023-12-15 23:10:05,234 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 23:10:05,234 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 352 transitions. [2023-12-15 23:10:05,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-15 23:10:05,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:05,236 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 23:10:05,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:10:05,236 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:05,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:05,237 INFO L85 PathProgramCache]: Analyzing trace with hash -629101218, now seen corresponding path program 1 times [2023-12-15 23:10:05,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:05,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163495002] [2023-12-15 23:10:05,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:05,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,359 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 23:10:05,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:05,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163495002] [2023-12-15 23:10:05,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163495002] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:05,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802502756] [2023-12-15 23:10:05,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:05,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:05,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:05,361 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 23:10:05,387 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 23:10:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 23:10:05,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:05,517 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 23:10:05,517 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:05,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802502756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:05,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:05,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-15 23:10:05,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308007407] [2023-12-15 23:10:05,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:05,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:05,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:05,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:05,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:05,519 INFO L87 Difference]: Start difference. First operand 266 states and 352 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 23:10:05,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:05,552 INFO L93 Difference]: Finished difference Result 413 states and 571 transitions. [2023-12-15 23:10:05,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:05,552 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 23:10:05,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:05,554 INFO L225 Difference]: With dead ends: 413 [2023-12-15 23:10:05,554 INFO L226 Difference]: Without dead ends: 273 [2023-12-15 23:10:05,555 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 23:10:05,556 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 7 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 736 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 23:10:05,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 736 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:05,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-15 23:10:05,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 271. [2023-12-15 23:10:05,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 220 states have (on average 1.2727272727272727) internal successors, (280), 223 states have internal predecessors, (280), 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 23:10:05,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 356 transitions. [2023-12-15 23:10:05,563 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 356 transitions. Word has length 212 [2023-12-15 23:10:05,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:05,565 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 356 transitions. [2023-12-15 23:10:05,565 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 23:10:05,565 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 356 transitions. [2023-12-15 23:10:05,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-15 23:10:05,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:05,567 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 23:10:05,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 23:10:05,772 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 23:10:05,773 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:05,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:05,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1700211501, now seen corresponding path program 1 times [2023-12-15 23:10:05,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:05,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263570836] [2023-12-15 23:10:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:05,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:05,880 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 23:10:05,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:05,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263570836] [2023-12-15 23:10:05,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263570836] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:05,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103590883] [2023-12-15 23:10:05,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:05,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:05,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:05,882 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 23:10:05,908 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 23:10:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 23:10:06,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:06,055 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 23:10:06,055 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:06,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103590883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:06,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:06,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-15 23:10:06,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791300531] [2023-12-15 23:10:06,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:06,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:06,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:06,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:06,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:06,059 INFO L87 Difference]: Start difference. First operand 271 states and 356 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 23:10:06,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:06,086 INFO L93 Difference]: Finished difference Result 415 states and 569 transitions. [2023-12-15 23:10:06,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:10:06,086 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 23:10:06,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:06,088 INFO L225 Difference]: With dead ends: 415 [2023-12-15 23:10:06,088 INFO L226 Difference]: Without dead ends: 270 [2023-12-15 23:10:06,088 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 23:10:06,089 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 7 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 722 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 23:10:06,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 722 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:06,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-15 23:10:06,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2023-12-15 23:10:06,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 220 states have (on average 1.259090909090909) internal successors, (277), 222 states have internal predecessors, (277), 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 23:10:06,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 351 transitions. [2023-12-15 23:10:06,098 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 351 transitions. Word has length 220 [2023-12-15 23:10:06,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:06,098 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 351 transitions. [2023-12-15 23:10:06,099 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 23:10:06,099 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 351 transitions. [2023-12-15 23:10:06,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-15 23:10:06,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:06,101 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] [2023-12-15 23:10:06,110 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 23:10:06,307 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 23:10:06,307 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:06,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:06,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1538712576, now seen corresponding path program 1 times [2023-12-15 23:10:06,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:06,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781034931] [2023-12-15 23:10:06,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:06,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-15 23:10:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,419 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 23:10:06,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:06,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781034931] [2023-12-15 23:10:06,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781034931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:06,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:06,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:06,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107064824] [2023-12-15 23:10:06,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:06,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:06,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:06,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:06,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:06,421 INFO L87 Difference]: Start difference. First operand 270 states and 351 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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 23:10:06,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:06,590 INFO L93 Difference]: Finished difference Result 413 states and 558 transitions. [2023-12-15 23:10:06,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:10:06,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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 227 [2023-12-15 23:10:06,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:06,592 INFO L225 Difference]: With dead ends: 413 [2023-12-15 23:10:06,592 INFO L226 Difference]: Without dead ends: 269 [2023-12-15 23:10:06,593 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 23:10:06,593 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 60 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:06,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 467 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:10:06,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-15 23:10:06,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2023-12-15 23:10:06,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 220 states have (on average 1.2545454545454546) internal successors, (276), 221 states have internal predecessors, (276), 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 23:10:06,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 348 transitions. [2023-12-15 23:10:06,604 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 348 transitions. Word has length 227 [2023-12-15 23:10:06,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:06,605 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 348 transitions. [2023-12-15 23:10:06,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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 23:10:06,605 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 348 transitions. [2023-12-15 23:10:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-15 23:10:06,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:06,606 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:10:06,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 23:10:06,607 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:06,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:06,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1032392993, now seen corresponding path program 1 times [2023-12-15 23:10:06,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:06,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92813251] [2023-12-15 23:10:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:06,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-15 23:10:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:06,787 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 23:10:06,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:06,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92813251] [2023-12-15 23:10:06,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92813251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:06,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:06,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:10:06,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901412237] [2023-12-15 23:10:06,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:06,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:10:06,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:06,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:10:06,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:06,789 INFO L87 Difference]: Start difference. First operand 269 states and 348 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 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 23:10:07,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:07,123 INFO L93 Difference]: Finished difference Result 617 states and 826 transitions. [2023-12-15 23:10:07,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:10:07,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 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 230 [2023-12-15 23:10:07,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:07,125 INFO L225 Difference]: With dead ends: 617 [2023-12-15 23:10:07,126 INFO L226 Difference]: Without dead ends: 474 [2023-12-15 23:10:07,126 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 23:10:07,127 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 403 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 617 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 23:10:07,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 617 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:10:07,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-12-15 23:10:07,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 420. [2023-12-15 23:10:07,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 341 states have (on average 1.3020527859237536) internal successors, (444), 343 states have internal predecessors, (444), 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 23:10:07,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 552 transitions. [2023-12-15 23:10:07,146 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 552 transitions. Word has length 230 [2023-12-15 23:10:07,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:07,146 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 552 transitions. [2023-12-15 23:10:07,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 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 23:10:07,147 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 552 transitions. [2023-12-15 23:10:07,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-15 23:10:07,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:07,148 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] [2023-12-15 23:10:07,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 23:10:07,149 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:07,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:07,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1253081541, now seen corresponding path program 1 times [2023-12-15 23:10:07,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:07,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421356007] [2023-12-15 23:10:07,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:07,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-15 23:10:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-12-15 23:10:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-12-15 23:10:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-15 23:10:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,284 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 23:10:07,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:07,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421356007] [2023-12-15 23:10:07,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421356007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:07,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:07,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:07,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159200154] [2023-12-15 23:10:07,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:07,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:07,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:07,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:07,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:07,285 INFO L87 Difference]: Start difference. First operand 420 states and 552 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 23:10:07,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:07,572 INFO L93 Difference]: Finished difference Result 886 states and 1218 transitions. [2023-12-15 23:10:07,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:07,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 256 [2023-12-15 23:10:07,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:07,575 INFO L225 Difference]: With dead ends: 886 [2023-12-15 23:10:07,575 INFO L226 Difference]: Without dead ends: 660 [2023-12-15 23:10:07,576 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 23:10:07,576 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 219 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 464 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 23:10:07,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 464 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:10:07,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-12-15 23:10:07,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 498. [2023-12-15 23:10:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 409 states have (on average 1.312958435207824) internal successors, (537), 412 states have internal predecessors, (537), 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 23:10:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 655 transitions. [2023-12-15 23:10:07,624 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 655 transitions. Word has length 256 [2023-12-15 23:10:07,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:07,624 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 655 transitions. [2023-12-15 23:10:07,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 23:10:07,624 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 655 transitions. [2023-12-15 23:10:07,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-15 23:10:07,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:07,626 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 23:10:07,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 23:10:07,627 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:07,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:07,627 INFO L85 PathProgramCache]: Analyzing trace with hash 377452701, now seen corresponding path program 1 times [2023-12-15 23:10:07,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:07,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639343087] [2023-12-15 23:10:07,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:07,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-15 23:10:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-15 23:10:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-15 23:10:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-15 23:10:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:07,748 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 23:10:07,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:07,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639343087] [2023-12-15 23:10:07,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639343087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:07,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:07,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:07,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127519769] [2023-12-15 23:10:07,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:07,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:07,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:07,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:07,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:07,750 INFO L87 Difference]: Start difference. First operand 498 states and 655 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 23:10:08,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:08,017 INFO L93 Difference]: Finished difference Result 1054 states and 1443 transitions. [2023-12-15 23:10:08,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:08,018 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 23:10:08,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:08,021 INFO L225 Difference]: With dead ends: 1054 [2023-12-15 23:10:08,021 INFO L226 Difference]: Without dead ends: 779 [2023-12-15 23:10:08,022 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 23:10:08,022 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 220 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 492 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 23:10:08,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 492 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:10:08,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2023-12-15 23:10:08,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 604. [2023-12-15 23:10:08,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 503 states have (on average 1.3260437375745526) internal successors, (667), 508 states have internal predecessors, (667), 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 23:10:08,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 797 transitions. [2023-12-15 23:10:08,050 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 797 transitions. Word has length 257 [2023-12-15 23:10:08,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:08,050 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 797 transitions. [2023-12-15 23:10:08,051 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 23:10:08,051 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 797 transitions. [2023-12-15 23:10:08,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-15 23:10:08,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:08,053 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 23:10:08,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 23:10:08,054 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:08,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:08,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1837145120, now seen corresponding path program 1 times [2023-12-15 23:10:08,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:08,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862761887] [2023-12-15 23:10:08,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:08,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-15 23:10:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-15 23:10:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-15 23:10:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-15 23:10:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,157 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 23:10:08,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:08,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862761887] [2023-12-15 23:10:08,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862761887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:08,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:08,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:08,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415213666] [2023-12-15 23:10:08,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:08,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:08,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:08,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:08,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:08,159 INFO L87 Difference]: Start difference. First operand 604 states and 797 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 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 23:10:08,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:08,445 INFO L93 Difference]: Finished difference Result 1258 states and 1725 transitions. [2023-12-15 23:10:08,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:08,446 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), 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 258 [2023-12-15 23:10:08,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:08,449 INFO L225 Difference]: With dead ends: 1258 [2023-12-15 23:10:08,449 INFO L226 Difference]: Without dead ends: 909 [2023-12-15 23:10:08,450 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 23:10:08,450 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 220 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 519 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 23:10:08,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 519 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:10:08,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2023-12-15 23:10:08,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 706. [2023-12-15 23:10:08,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 597 states have (on average 1.3450586264656617) internal successors, (803), 606 states have internal predecessors, (803), 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 23:10:08,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 941 transitions. [2023-12-15 23:10:08,486 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 941 transitions. Word has length 258 [2023-12-15 23:10:08,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:08,486 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 941 transitions. [2023-12-15 23:10:08,486 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), 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 23:10:08,486 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 941 transitions. [2023-12-15 23:10:08,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-15 23:10:08,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:08,488 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 23:10:08,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 23:10:08,488 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:08,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:08,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2111904734, now seen corresponding path program 1 times [2023-12-15 23:10:08,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:08,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197484951] [2023-12-15 23:10:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:08,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-15 23:10:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-15 23:10:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-15 23:10:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-15 23:10:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,642 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 23:10:08,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:08,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197484951] [2023-12-15 23:10:08,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197484951] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:08,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799488822] [2023-12-15 23:10:08,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:08,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:08,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:08,643 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 23:10:08,667 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 23:10:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:08,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 23:10:08,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:08,816 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 23:10:08,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:08,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799488822] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:08,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:08,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-12-15 23:10:08,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595547403] [2023-12-15 23:10:08,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:08,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:08,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:08,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:08,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:10:08,818 INFO L87 Difference]: Start difference. First operand 706 states and 941 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 23:10:08,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:08,901 INFO L93 Difference]: Finished difference Result 1161 states and 1589 transitions. [2023-12-15 23:10:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:08,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 258 [2023-12-15 23:10:08,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:08,904 INFO L225 Difference]: With dead ends: 1161 [2023-12-15 23:10:08,904 INFO L226 Difference]: Without dead ends: 706 [2023-12-15 23:10:08,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 301 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 23:10:08,905 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 51 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 639 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 23:10:08,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 639 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:08,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2023-12-15 23:10:08,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2023-12-15 23:10:08,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 597 states have (on average 1.3350083752093802) internal successors, (797), 606 states have internal predecessors, (797), 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 23:10:08,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 935 transitions. [2023-12-15 23:10:08,948 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 935 transitions. Word has length 258 [2023-12-15 23:10:08,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:08,949 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 935 transitions. [2023-12-15 23:10:08,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 23:10:08,949 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 935 transitions. [2023-12-15 23:10:08,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-12-15 23:10:08,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:08,951 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] [2023-12-15 23:10:08,958 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 23:10:09,156 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 23:10:09,156 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:09,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1894713939, now seen corresponding path program 1 times [2023-12-15 23:10:09,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:09,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168668654] [2023-12-15 23:10:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:09,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-15 23:10:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-15 23:10:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-15 23:10:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-12-15 23:10:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,311 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 23:10:09,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:09,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168668654] [2023-12-15 23:10:09,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168668654] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:09,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781458967] [2023-12-15 23:10:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:09,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:09,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:09,313 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 23:10:09,315 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 23:10:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 23:10:09,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:09,485 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 23:10:09,486 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:09,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781458967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:09,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:09,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-12-15 23:10:09,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722298443] [2023-12-15 23:10:09,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:09,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:09,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:09,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:09,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:10:09,487 INFO L87 Difference]: Start difference. First operand 706 states and 935 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (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 23:10:09,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:09,548 INFO L93 Difference]: Finished difference Result 1161 states and 1575 transitions. [2023-12-15 23:10:09,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:09,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (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 23:10:09,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:09,551 INFO L225 Difference]: With dead ends: 1161 [2023-12-15 23:10:09,551 INFO L226 Difference]: Without dead ends: 718 [2023-12-15 23:10:09,552 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 23:10:09,552 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 15 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 662 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 23:10:09,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 662 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:09,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2023-12-15 23:10:09,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2023-12-15 23:10:09,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 607 states have (on average 1.3360790774299836) internal successors, (811), 616 states have internal predecessors, (811), 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 23:10:09,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 949 transitions. [2023-12-15 23:10:09,588 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 949 transitions. Word has length 259 [2023-12-15 23:10:09,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:09,588 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 949 transitions. [2023-12-15 23:10:09,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (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 23:10:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 949 transitions. [2023-12-15 23:10:09,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-15 23:10:09,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:09,591 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] [2023-12-15 23:10:09,599 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 23:10:09,799 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 23:10:09,799 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:09,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:09,799 INFO L85 PathProgramCache]: Analyzing trace with hash 710936248, now seen corresponding path program 1 times [2023-12-15 23:10:09,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:09,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807357213] [2023-12-15 23:10:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:09,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-15 23:10:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-15 23:10:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-15 23:10:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-15 23:10:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:09,960 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 23:10:09,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:09,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807357213] [2023-12-15 23:10:09,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807357213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:09,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:09,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:10:09,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467923920] [2023-12-15 23:10:09,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:09,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:09,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:09,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:09,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:10:09,962 INFO L87 Difference]: Start difference. First operand 718 states and 949 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 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 23:10:10,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:10,134 INFO L93 Difference]: Finished difference Result 1175 states and 1589 transitions. [2023-12-15 23:10:10,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:10:10,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 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 260 [2023-12-15 23:10:10,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:10,137 INFO L225 Difference]: With dead ends: 1175 [2023-12-15 23:10:10,137 INFO L226 Difference]: Without dead ends: 700 [2023-12-15 23:10:10,138 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 23:10:10,138 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 59 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:10,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 465 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:10:10,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-15 23:10:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2023-12-15 23:10:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 590 states have (on average 1.3186440677966103) internal successors, (778), 598 states have internal predecessors, (778), 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 23:10:10,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 915 transitions. [2023-12-15 23:10:10,164 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 915 transitions. Word has length 260 [2023-12-15 23:10:10,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:10,164 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 915 transitions. [2023-12-15 23:10:10,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 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 23:10:10,164 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 915 transitions. [2023-12-15 23:10:10,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-12-15 23:10:10,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:10,166 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 23:10:10,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-15 23:10:10,166 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:10,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:10,166 INFO L85 PathProgramCache]: Analyzing trace with hash -648363165, now seen corresponding path program 1 times [2023-12-15 23:10:10,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:10,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597781738] [2023-12-15 23:10:10,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:10,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-15 23:10:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-15 23:10:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-15 23:10:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,398 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 23:10:10,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:10,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597781738] [2023-12-15 23:10:10,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597781738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:10,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:10,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:10:10,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433325281] [2023-12-15 23:10:10,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:10,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:10:10,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:10,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:10:10,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:10:10,399 INFO L87 Difference]: Start difference. First operand 700 states and 915 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 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 23:10:10,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:10,822 INFO L93 Difference]: Finished difference Result 1007 states and 1393 transitions. [2023-12-15 23:10:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:10:10,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 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 261 [2023-12-15 23:10:10,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:10,825 INFO L225 Difference]: With dead ends: 1007 [2023-12-15 23:10:10,825 INFO L226 Difference]: Without dead ends: 1005 [2023-12-15 23:10:10,826 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 23:10:10,826 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 237 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1460 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 23:10:10,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 1460 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:10:10,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2023-12-15 23:10:10,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 706. [2023-12-15 23:10:10,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 594 states have (on average 1.3164983164983164) internal successors, (782), 603 states have internal predecessors, (782), 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 23:10:10,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 921 transitions. [2023-12-15 23:10:10,857 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 921 transitions. Word has length 261 [2023-12-15 23:10:10,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:10,858 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 921 transitions. [2023-12-15 23:10:10,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 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 23:10:10,858 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 921 transitions. [2023-12-15 23:10:10,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-12-15 23:10:10,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:10,859 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] [2023-12-15 23:10:10,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-15 23:10:10,859 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:10,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1275808175, now seen corresponding path program 1 times [2023-12-15 23:10:10,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:10,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194637850] [2023-12-15 23:10:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:10,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:10,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-15 23:10:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-15 23:10:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-15 23:10:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-15 23:10:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,105 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 23:10:11,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:11,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194637850] [2023-12-15 23:10:11,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194637850] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:11,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672692106] [2023-12-15 23:10:11,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:11,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:11,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:11,107 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 23:10:11,124 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 23:10:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:11,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 23:10:11,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:11,398 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 23:10:11,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:10:11,671 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 23:10:11,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672692106] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:10:11,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:10:11,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2023-12-15 23:10:11,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111582514] [2023-12-15 23:10:11,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:10:11,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-15 23:10:11,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:11,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-15 23:10:11,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-15 23:10:11,673 INFO L87 Difference]: Start difference. First operand 706 states and 921 transitions. Second operand has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 14 states have internal predecessors, (143), 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 23:10:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:12,953 INFO L93 Difference]: Finished difference Result 1744 states and 2386 transitions. [2023-12-15 23:10:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-15 23:10:12,953 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 14 states have internal predecessors, (143), 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 269 [2023-12-15 23:10:12,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:12,958 INFO L225 Difference]: With dead ends: 1744 [2023-12-15 23:10:12,958 INFO L226 Difference]: Without dead ends: 1299 [2023-12-15 23:10:12,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 580 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2023-12-15 23:10:12,960 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 408 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:12,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 2230 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 23:10:12,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2023-12-15 23:10:13,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 967. [2023-12-15 23:10:13,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 815 states have (on average 1.2993865030674847) internal successors, (1059), 825 states have internal predecessors, (1059), 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 23:10:13,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1251 transitions. [2023-12-15 23:10:13,003 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1251 transitions. Word has length 269 [2023-12-15 23:10:13,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:13,003 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1251 transitions. [2023-12-15 23:10:13,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.526315789473684) internal successors, (143), 14 states have internal predecessors, (143), 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 23:10:13,003 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1251 transitions. [2023-12-15 23:10:13,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-12-15 23:10:13,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:13,005 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] [2023-12-15 23:10:13,014 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 23:10:13,212 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 23:10:13,212 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:13,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:13,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2057545104, now seen corresponding path program 1 times [2023-12-15 23:10:13,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:13,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750228769] [2023-12-15 23:10:13,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:13,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-15 23:10:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-15 23:10:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-15 23:10:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-15 23:10:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,338 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 23:10:13,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:13,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750228769] [2023-12-15 23:10:13,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750228769] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:13,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130461944] [2023-12-15 23:10:13,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:13,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:13,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:13,339 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 23:10:13,360 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 23:10:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 23:10:13,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:13,506 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 23:10:13,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:13,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130461944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:13,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:13,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-15 23:10:13,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968439990] [2023-12-15 23:10:13,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:13,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:13,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:13,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:13,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:13,508 INFO L87 Difference]: Start difference. First operand 967 states and 1251 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 23:10:13,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:13,577 INFO L93 Difference]: Finished difference Result 1798 states and 2367 transitions. [2023-12-15 23:10:13,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:13,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 269 [2023-12-15 23:10:13,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:13,581 INFO L225 Difference]: With dead ends: 1798 [2023-12-15 23:10:13,581 INFO L226 Difference]: Without dead ends: 951 [2023-12-15 23:10:13,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 315 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 23:10:13,583 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 11 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 659 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 23:10:13,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 659 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:13,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2023-12-15 23:10:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 951. [2023-12-15 23:10:13,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 804 states have (on average 1.287313432835821) internal successors, (1035), 814 states have internal predecessors, (1035), 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 23:10:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1218 transitions. [2023-12-15 23:10:13,620 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1218 transitions. Word has length 269 [2023-12-15 23:10:13,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:13,621 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1218 transitions. [2023-12-15 23:10:13,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 23:10:13,621 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1218 transitions. [2023-12-15 23:10:13,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-15 23:10:13,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:13,623 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] [2023-12-15 23:10:13,631 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 23:10:13,828 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 23:10:13,829 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:13,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:13,829 INFO L85 PathProgramCache]: Analyzing trace with hash -629738955, now seen corresponding path program 1 times [2023-12-15 23:10:13,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:13,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706480916] [2023-12-15 23:10:13,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:13,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 23:10:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 23:10:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-15 23:10:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-12-15 23:10:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-12-15 23:10:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-15 23:10:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-15 23:10:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-12-15 23:10:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-15 23:10:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:13,933 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 23:10:13,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:13,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706480916] [2023-12-15 23:10:13,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706480916] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:13,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716544274] [2023-12-15 23:10:13,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:13,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:13,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:13,934 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 23:10:13,956 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 23:10:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 23:10:14,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:14,105 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 23:10:14,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:14,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716544274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:14,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:14,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-12-15 23:10:14,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839918264] [2023-12-15 23:10:14,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:14,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:10:14,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:14,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:10:14,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:14,107 INFO L87 Difference]: Start difference. First operand 951 states and 1218 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 23:10:14,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:14,191 INFO L93 Difference]: Finished difference Result 1646 states and 2151 transitions. [2023-12-15 23:10:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:10:14,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 272 [2023-12-15 23:10:14,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:14,194 INFO L225 Difference]: With dead ends: 1646 [2023-12-15 23:10:14,194 INFO L226 Difference]: Without dead ends: 806 [2023-12-15 23:10:14,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 318 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 23:10:14,196 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 8 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 662 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 23:10:14,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 662 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:10:14,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2023-12-15 23:10:14,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2023-12-15 23:10:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 677 states have (on average 1.2880354505169866) internal successors, (872), 687 states have internal predecessors, (872), 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 23:10:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1033 transitions. [2023-12-15 23:10:14,232 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1033 transitions. Word has length 272 [2023-12-15 23:10:14,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:14,232 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1033 transitions. [2023-12-15 23:10:14,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 23:10:14,232 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1033 transitions. [2023-12-15 23:10:14,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-12-15 23:10:14,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:14,234 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] [2023-12-15 23:10:14,239 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 23:10:14,439 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 23:10:14,440 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:14,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:14,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2123303412, now seen corresponding path program 1 times [2023-12-15 23:10:14,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:14,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600988381] [2023-12-15 23:10:14,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:14,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-15 23:10:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-15 23:10:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-15 23:10:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-15 23:10:14,917 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 263 [2023-12-15 23:10:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2023-12-15 23:10:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:14,922 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 16 proven. 146 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2023-12-15 23:10:14,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:14,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600988381] [2023-12-15 23:10:14,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600988381] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:14,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472134200] [2023-12-15 23:10:14,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:14,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:14,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:14,923 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 23:10:14,930 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 23:10:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 23:10:15,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:15,233 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 23:10:15,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:15,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472134200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:15,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:15,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2023-12-15 23:10:15,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505685403] [2023-12-15 23:10:15,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:15,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:10:15,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:15,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:10:15,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2023-12-15 23:10:15,237 INFO L87 Difference]: Start difference. First operand 806 states and 1033 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 7 states have internal predecessors, (103), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-15 23:10:15,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:15,460 INFO L93 Difference]: Finished difference Result 1539 states and 1999 transitions. [2023-12-15 23:10:15,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:10:15,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 7 states have internal predecessors, (103), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 284 [2023-12-15 23:10:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:15,466 INFO L225 Difference]: With dead ends: 1539 [2023-12-15 23:10:15,466 INFO L226 Difference]: Without dead ends: 1087 [2023-12-15 23:10:15,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 327 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2023-12-15 23:10:15,468 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 133 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:15,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1700 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:10:15,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2023-12-15 23:10:15,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 961. [2023-12-15 23:10:15,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 804 states have (on average 1.2823383084577114) internal successors, (1031), 815 states have internal predecessors, (1031), 99 states have call successors, (99), 58 states have call predecessors, (99), 57 states have return successors, (98), 94 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-15 23:10:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1228 transitions. [2023-12-15 23:10:15,516 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1228 transitions. Word has length 284 [2023-12-15 23:10:15,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:15,517 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1228 transitions. [2023-12-15 23:10:15,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 7 states have internal predecessors, (103), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-15 23:10:15,517 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1228 transitions. [2023-12-15 23:10:15,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-15 23:10:15,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:15,519 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] [2023-12-15 23:10:15,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-15 23:10:15,724 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 23:10:15,724 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:15,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:15,725 INFO L85 PathProgramCache]: Analyzing trace with hash 678129265, now seen corresponding path program 1 times [2023-12-15 23:10:15,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:15,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705805361] [2023-12-15 23:10:15,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:15,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:15,742 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 1 [2023-12-15 23:10:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:15,812 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 25 [2023-12-15 23:10:15,813 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 42 [2023-12-15 23:10:15,814 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 4 [2023-12-15 23:10:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:15,818 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 30 [2023-12-15 23:10:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,819 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 23:10:15,822 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 23:10:15,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [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 35 [2023-12-15 23:10:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [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 6 [2023-12-15 23:10:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-15 23:10:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-15 23:10:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-15 23:10:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-15 23:10:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-15 23:10:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-15 23:10:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:15,854 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 23:10:15,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:15,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705805361] [2023-12-15 23:10:15,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705805361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:15,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:15,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:10:15,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103801802] [2023-12-15 23:10:15,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:15,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:10:15,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:15,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:10:15,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:10:15,855 INFO L87 Difference]: Start difference. First operand 961 states and 1228 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 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 23:10:16,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:16,227 INFO L93 Difference]: Finished difference Result 1895 states and 2575 transitions. [2023-12-15 23:10:16,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:10:16,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 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 290 [2023-12-15 23:10:16,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:16,232 INFO L225 Difference]: With dead ends: 1895 [2023-12-15 23:10:16,232 INFO L226 Difference]: Without dead ends: 1273 [2023-12-15 23:10:16,233 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 23:10:16,233 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 182 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:16,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1204 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:10:16,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2023-12-15 23:10:16,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1016. [2023-12-15 23:10:16,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 847 states have (on average 1.2927981109799291) internal successors, (1095), 858 states have internal predecessors, (1095), 111 states have call successors, (111), 58 states have call predecessors, (111), 57 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-15 23:10:16,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1316 transitions. [2023-12-15 23:10:16,315 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1316 transitions. Word has length 290 [2023-12-15 23:10:16,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:16,315 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1316 transitions. [2023-12-15 23:10:16,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 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 23:10:16,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1316 transitions. [2023-12-15 23:10:16,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-15 23:10:16,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:16,317 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] [2023-12-15 23:10:16,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-15 23:10:16,317 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:16,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:16,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1152285715, now seen corresponding path program 1 times [2023-12-15 23:10:16,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:16,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657467883] [2023-12-15 23:10:16,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:16,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-15 23:10:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-15 23:10:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-15 23:10:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-15 23:10:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-15 23:10:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-15 23:10:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,653 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 23:10:16,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:16,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657467883] [2023-12-15 23:10:16,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657467883] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:16,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212474068] [2023-12-15 23:10:16,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:16,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:16,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:16,666 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 23:10:16,688 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 23:10:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:16,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 23:10:16,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:16,949 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 23:10:16,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:16,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212474068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:16,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:16,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 17 [2023-12-15 23:10:16,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609720645] [2023-12-15 23:10:16,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:16,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:10:16,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:16,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:10:16,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:10:16,951 INFO L87 Difference]: Start difference. First operand 1016 states and 1316 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 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 23:10:17,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:17,489 INFO L93 Difference]: Finished difference Result 2480 states and 3290 transitions. [2023-12-15 23:10:17,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 23:10:17,490 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 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 290 [2023-12-15 23:10:17,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:17,496 INFO L225 Difference]: With dead ends: 2480 [2023-12-15 23:10:17,496 INFO L226 Difference]: Without dead ends: 1804 [2023-12-15 23:10:17,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2023-12-15 23:10:17,497 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 765 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:17,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 2436 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:10:17,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2023-12-15 23:10:17,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1185. [2023-12-15 23:10:17,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 984 states have (on average 1.285569105691057) internal successors, (1265), 997 states have internal predecessors, (1265), 133 states have call successors, (133), 68 states have call predecessors, (133), 67 states have return successors, (132), 126 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-15 23:10:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1530 transitions. [2023-12-15 23:10:17,566 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1530 transitions. Word has length 290 [2023-12-15 23:10:17,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:17,566 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 1530 transitions. [2023-12-15 23:10:17,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 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 23:10:17,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1530 transitions. [2023-12-15 23:10:17,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-15 23:10:17,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:17,568 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] [2023-12-15 23:10:17,580 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 23:10:17,776 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 23:10:17,776 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:17,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:17,777 INFO L85 PathProgramCache]: Analyzing trace with hash -265230867, now seen corresponding path program 1 times [2023-12-15 23:10:17,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:17,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661311011] [2023-12-15 23:10:17,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:17,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:17,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-15 23:10:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-15 23:10:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-15 23:10:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-15 23:10:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-15 23:10:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-15 23:10:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,049 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 23:10:18,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:18,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661311011] [2023-12-15 23:10:18,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661311011] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:18,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593515054] [2023-12-15 23:10:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:18,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:18,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:18,051 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 23:10:18,055 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 23:10:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 23:10:18,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:18,278 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 23:10:18,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:10:18,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593515054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:18,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:10:18,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 15 [2023-12-15 23:10:18,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995480703] [2023-12-15 23:10:18,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:18,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:10:18,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:18,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:10:18,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-15 23:10:18,280 INFO L87 Difference]: Start difference. First operand 1185 states and 1530 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-15 23:10:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:18,581 INFO L93 Difference]: Finished difference Result 2279 states and 3022 transitions. [2023-12-15 23:10:18,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:10:18,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 290 [2023-12-15 23:10:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:18,586 INFO L225 Difference]: With dead ends: 2279 [2023-12-15 23:10:18,586 INFO L226 Difference]: Without dead ends: 1431 [2023-12-15 23:10:18,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-15 23:10:18,587 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 180 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:18,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 2108 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:10:18,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2023-12-15 23:10:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1163. [2023-12-15 23:10:18,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 968 states have (on average 1.28099173553719) internal successors, (1240), 981 states have internal predecessors, (1240), 127 states have call successors, (127), 68 states have call predecessors, (127), 67 states have return successors, (126), 120 states have call predecessors, (126), 126 states have call successors, (126) [2023-12-15 23:10:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1493 transitions. [2023-12-15 23:10:18,654 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1493 transitions. Word has length 290 [2023-12-15 23:10:18,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:18,654 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1493 transitions. [2023-12-15 23:10:18,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-15 23:10:18,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1493 transitions. [2023-12-15 23:10:18,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-15 23:10:18,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:18,656 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 23:10:18,663 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 23:10:18,861 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 23:10:18,862 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:18,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:18,862 INFO L85 PathProgramCache]: Analyzing trace with hash -948675796, now seen corresponding path program 1 times [2023-12-15 23:10:18,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:18,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645737068] [2023-12-15 23:10:18,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:18,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-15 23:10:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-15 23:10:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-15 23:10:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-15 23:10:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-12-15 23:10:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2023-12-15 23:10:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-12-15 23:10:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:18,968 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 23:10:18,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:18,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645737068] [2023-12-15 23:10:18,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645737068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:10:18,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:10:18,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:10:18,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146153885] [2023-12-15 23:10:18,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:10:18,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:10:18,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:18,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:10:18,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:10:18,971 INFO L87 Difference]: Start difference. First operand 1163 states and 1493 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 23:10:19,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:19,400 INFO L93 Difference]: Finished difference Result 1920 states and 2486 transitions. [2023-12-15 23:10:19,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:10:19,401 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 23:10:19,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:19,404 INFO L225 Difference]: With dead ends: 1920 [2023-12-15 23:10:19,405 INFO L226 Difference]: Without dead ends: 1106 [2023-12-15 23:10:19,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:10:19,406 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 477 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:19,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 750 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:10:19,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2023-12-15 23:10:19,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 869. [2023-12-15 23:10:19,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 738 states have (on average 1.2560975609756098) internal successors, (927), 741 states have internal predecessors, (927), 85 states have call successors, (85), 45 states have call predecessors, (85), 45 states have return successors, (85), 82 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-15 23:10:19,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1097 transitions. [2023-12-15 23:10:19,445 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1097 transitions. Word has length 298 [2023-12-15 23:10:19,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:19,445 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1097 transitions. [2023-12-15 23:10:19,445 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 23:10:19,445 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1097 transitions. [2023-12-15 23:10:19,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-12-15 23:10:19,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:19,447 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:19,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-15 23:10:19,447 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:19,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:19,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1441935166, now seen corresponding path program 1 times [2023-12-15 23:10:19,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:19,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979923925] [2023-12-15 23:10:19,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:19,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:19,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-12-15 23:10:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-15 23:10:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-15 23:10:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-15 23:10:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-15 23:10:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-12-15 23:10:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-12-15 23:10:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-12-15 23:10:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2023-12-15 23:10:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2023-12-15 23:10:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-12-15 23:10:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2023-12-15 23:10:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2023-12-15 23:10:20,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:20,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979923925] [2023-12-15 23:10:20,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979923925] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:20,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672318419] [2023-12-15 23:10:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:20,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:20,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:20,040 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 23:10:20,042 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 23:10:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:20,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-15 23:10:20,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 224 proven. 74 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2023-12-15 23:10:20,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:10:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 34 proven. 70 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-12-15 23:10:21,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672318419] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:10:21,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:10:21,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 34 [2023-12-15 23:10:21,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693857229] [2023-12-15 23:10:21,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:10:21,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-15 23:10:21,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:21,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-15 23:10:21,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1033, Unknown=0, NotChecked=0, Total=1122 [2023-12-15 23:10:21,115 INFO L87 Difference]: Start difference. First operand 869 states and 1097 transitions. Second operand has 34 states, 34 states have (on average 7.117647058823529) internal successors, (242), 29 states have internal predecessors, (242), 9 states have call successors, (53), 9 states have call predecessors, (53), 14 states have return successors, (53), 13 states have call predecessors, (53), 9 states have call successors, (53) [2023-12-15 23:10:40,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:10:40,052 INFO L93 Difference]: Finished difference Result 8501 states and 11474 transitions. [2023-12-15 23:10:40,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 405 states. [2023-12-15 23:10:40,053 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.117647058823529) internal successors, (242), 29 states have internal predecessors, (242), 9 states have call successors, (53), 9 states have call predecessors, (53), 14 states have return successors, (53), 13 states have call predecessors, (53), 9 states have call successors, (53) Word has length 337 [2023-12-15 23:10:40,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:10:40,079 INFO L225 Difference]: With dead ends: 8501 [2023-12-15 23:10:40,080 INFO L226 Difference]: Without dead ends: 7925 [2023-12-15 23:10:40,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1167 GetRequests, 725 SyntacticMatches, 8 SemanticMatches, 434 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80121 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=13037, Invalid=176623, Unknown=0, NotChecked=0, Total=189660 [2023-12-15 23:10:40,114 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 6798 mSDsluCounter, 12271 mSDsCounter, 0 mSdLazyCounter, 12160 mSolverCounterSat, 1912 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6798 SdHoareTripleChecker+Valid, 12954 SdHoareTripleChecker+Invalid, 14072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1912 IncrementalHoareTripleChecker+Valid, 12160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:40,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6798 Valid, 12954 Invalid, 14072 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1912 Valid, 12160 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-15 23:10:40,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7925 states. [2023-12-15 23:10:40,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7925 to 3489. [2023-12-15 23:10:40,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3489 states, 2811 states have (on average 1.262895766631092) internal successors, (3550), 2844 states have internal predecessors, (3550), 456 states have call successors, (456), 203 states have call predecessors, (456), 221 states have return successors, (483), 441 states have call predecessors, (483), 456 states have call successors, (483) [2023-12-15 23:10:40,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3489 states to 3489 states and 4489 transitions. [2023-12-15 23:10:40,408 INFO L78 Accepts]: Start accepts. Automaton has 3489 states and 4489 transitions. Word has length 337 [2023-12-15 23:10:40,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:10:40,409 INFO L495 AbstractCegarLoop]: Abstraction has 3489 states and 4489 transitions. [2023-12-15 23:10:40,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.117647058823529) internal successors, (242), 29 states have internal predecessors, (242), 9 states have call successors, (53), 9 states have call predecessors, (53), 14 states have return successors, (53), 13 states have call predecessors, (53), 9 states have call successors, (53) [2023-12-15 23:10:40,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3489 states and 4489 transitions. [2023-12-15 23:10:40,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2023-12-15 23:10:40,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:10:40,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:40,426 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 23:10:40,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-15 23:10:40,622 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:10:40,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:10:40,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2049863081, now seen corresponding path program 1 times [2023-12-15 23:10:40,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:10:40,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756604732] [2023-12-15 23:10:40,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:40,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:10:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:10:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 23:10:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 23:10:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 23:10:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 23:10:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 23:10:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 23:10:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-15 23:10:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 23:10:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-15 23:10:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 23:10:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 23:10:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-15 23:10:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 23:10:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 23:10:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-15 23:10:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-12-15 23:10:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-15 23:10:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-15 23:10:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-15 23:10:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-15 23:10:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-15 23:10:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-15 23:10:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-15 23:10:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-15 23:10:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2023-12-15 23:10:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-12-15 23:10:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2023-12-15 23:10:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2023-12-15 23:10:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,482 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 16 proven. 22 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2023-12-15 23:10:41,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:10:41,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756604732] [2023-12-15 23:10:41,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756604732] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:10:41,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347782497] [2023-12-15 23:10:41,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:10:41,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:41,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:10:41,484 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 23:10:41,500 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 23:10:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:10:41,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-15 23:10:41,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:10:42,057 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 190 proven. 101 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-15 23:10:42,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:10:42,564 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 33 proven. 68 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-12-15 23:10:42,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347782497] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:10:42,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:10:42,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 35 [2023-12-15 23:10:42,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632746729] [2023-12-15 23:10:42,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:10:42,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-15 23:10:42,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:10:42,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-15 23:10:42,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1099, Unknown=0, NotChecked=0, Total=1190 [2023-12-15 23:10:42,566 INFO L87 Difference]: Start difference. First operand 3489 states and 4489 transitions. Second operand has 35 states, 35 states have (on average 6.942857142857143) internal successors, (243), 30 states have internal predecessors, (243), 10 states have call successors, (54), 9 states have call predecessors, (54), 14 states have return successors, (54), 14 states have call predecessors, (54), 10 states have call successors, (54) Received shutdown request... [2023-12-15 23:10:59,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2023-12-15 23:10:59,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1003 GetRequests, 732 SyntacticMatches, 1 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27256 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=6581, Invalid=66589, Unknown=0, NotChecked=0, Total=73170 [2023-12-15 23:10:59,315 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 4023 mSDsluCounter, 5981 mSDsCounter, 0 mSdLazyCounter, 8354 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4023 SdHoareTripleChecker+Valid, 6325 SdHoareTripleChecker+Invalid, 9218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 8354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:10:59,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4023 Valid, 6325 Invalid, 9218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [864 Valid, 8354 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-15 23:10:59,316 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:10:59,321 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 23:10:59,321 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:10:59,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 23:10:59,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:10:59,523 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (3489states) and FLOYD_HOARE automaton (currently 238 states, 35 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 271 known predicates. [2023-12-15 23:10:59,527 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] [2023-12-15 23:10:59,529 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:10:59,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:10:59 BoogieIcfgContainer [2023-12-15 23:10:59,530 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:10:59,530 INFO L158 Benchmark]: Toolchain (without parser) took 59120.90ms. Allocated memory was 195.0MB in the beginning and 1.0GB in the end (delta: 834.7MB). Free memory was 149.7MB in the beginning and 757.7MB in the end (delta: -608.0MB). Peak memory consumption was 228.1MB. Max. memory is 8.0GB. [2023-12-15 23:10:59,530 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 195.0MB. Free memory is still 152.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:10:59,530 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.05ms. Allocated memory is still 195.0MB. Free memory was 149.5MB in the beginning and 132.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-15 23:10:59,531 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.57ms. Allocated memory is still 195.0MB. Free memory was 132.7MB in the beginning and 129.9MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:10:59,531 INFO L158 Benchmark]: Boogie Preprocessor took 52.62ms. Allocated memory is still 195.0MB. Free memory was 129.9MB in the beginning and 126.1MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 23:10:59,531 INFO L158 Benchmark]: RCFGBuilder took 666.92ms. Allocated memory is still 195.0MB. Free memory was 126.1MB in the beginning and 159.4MB in the end (delta: -33.3MB). Peak memory consumption was 32.1MB. Max. memory is 8.0GB. [2023-12-15 23:10:59,531 INFO L158 Benchmark]: TraceAbstraction took 58011.98ms. Allocated memory was 195.0MB in the beginning and 1.0GB in the end (delta: 834.7MB). Free memory was 158.8MB in the beginning and 757.7MB in the end (delta: -598.9MB). Peak memory consumption was 235.8MB. Max. memory is 8.0GB. [2023-12-15 23:10:59,531 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 195.0MB. Free memory is still 152.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 323.05ms. Allocated memory is still 195.0MB. Free memory was 149.5MB in the beginning and 132.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.57ms. Allocated memory is still 195.0MB. Free memory was 132.7MB in the beginning and 129.9MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 52.62ms. Allocated memory is still 195.0MB. Free memory was 129.9MB in the beginning and 126.1MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 666.92ms. Allocated memory is still 195.0MB. Free memory was 126.1MB in the beginning and 159.4MB in the end (delta: -33.3MB). Peak memory consumption was 32.1MB. Max. memory is 8.0GB. * TraceAbstraction took 58011.98ms. Allocated memory was 195.0MB in the beginning and 1.0GB in the end (delta: 834.7MB). Free memory was 158.8MB in the beginning and 757.7MB in the end (delta: -598.9MB). Peak memory consumption was 235.8MB. 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: 535]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 535). Cancelled while NwaCegarLoop was constructing difference of abstraction (3489states) and FLOYD_HOARE automaton (currently 238 states, 35 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 271 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 171 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.0s, OverallIterations: 39, TraceHistogramMax: 12, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 42.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15231 SdHoareTripleChecker+Valid, 14.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14940 mSDsluCounter, 52361 SdHoareTripleChecker+Invalid, 11.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42093 mSDsCounter, 3513 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27236 IncrementalHoareTripleChecker+Invalid, 30749 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3513 mSolverCounterUnsat, 10268 mSDtfsCounter, 27236 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6863 GetRequests, 5916 SyntacticMatches, 15 SemanticMatches, 931 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107810 ImplicationChecksByTransitivity, 26.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3489occurred in iteration=38, InterpolantAutomatonStates: 637, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 38 MinimizatonAttempts, 7320 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 10870 NumberOfCodeBlocks, 10870 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 11971 ConstructedInterpolants, 0 QuantifiedInterpolants, 19894 SizeOfPredicates, 33 NumberOfNonLiveVariables, 11643 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 58 InterpolantComputations, 35 PerfectInterpolantSequences, 29111/29773 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