/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:32:12,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:32:12,912 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 13:32:12,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:32:12,916 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:32:12,938 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:32:12,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:32:12,939 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:32:12,939 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:32:12,942 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:32:12,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:32:12,943 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:32:12,943 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:32:12,944 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:32:12,944 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:32:12,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:32:12,945 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:32:12,945 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:32:12,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:32:12,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:32:12,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:32:12,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:32:12,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:32:12,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:32:12,946 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:32:12,946 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:32:12,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:32:12,946 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:32:12,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:32:12,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:32:12,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:32:12,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:32:12,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:32:12,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:32:12,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:32:12,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:32:12,948 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:32:12,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:32:12,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:32:12,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:32:12,949 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:32:12,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:32:12,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:32:12,949 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:32:13,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:32:13,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:32:13,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:32:13,160 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:32:13,160 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:32:13,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:32:14,215 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:32:14,404 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:32:14,405 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:32:14,416 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fefca82e/2c987e68cc1b43b5afc757686404268b/FLAG67c522265 [2023-12-21 13:32:14,428 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fefca82e/2c987e68cc1b43b5afc757686404268b [2023-12-21 13:32:14,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:32:14,431 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:32:14,433 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:32:14,433 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:32:14,437 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:32:14,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:32:14" (1/1) ... [2023-12-21 13:32:14,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2769386b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:14, skipping insertion in model container [2023-12-21 13:32:14,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:32:14" (1/1) ... [2023-12-21 13:32:14,479 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:32:14,624 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-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6358,6371] [2023-12-21 13:32:14,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:32:14,662 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:32:14,701 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-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6358,6371] [2023-12-21 13:32:14,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:32:14,746 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:32:14,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:14 WrapperNode [2023-12-21 13:32:14,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:32:14,747 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:32:14,748 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:32:14,748 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:32:14,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:14" (1/1) ... [2023-12-21 13:32:14,759 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:14" (1/1) ... [2023-12-21 13:32:14,798 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 563 [2023-12-21 13:32:14,798 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:32:14,798 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:32:14,799 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:32:14,799 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:32:14,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:14" (1/1) ... [2023-12-21 13:32:14,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:14" (1/1) ... [2023-12-21 13:32:14,809 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:14" (1/1) ... [2023-12-21 13:32:14,819 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 13:32:14,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:14" (1/1) ... [2023-12-21 13:32:14,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:14" (1/1) ... [2023-12-21 13:32:14,825 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:14" (1/1) ... [2023-12-21 13:32:14,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:14" (1/1) ... [2023-12-21 13:32:14,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:14" (1/1) ... [2023-12-21 13:32:14,830 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:14" (1/1) ... [2023-12-21 13:32:14,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:32:14,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:32:14,834 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:32:14,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:32:14,834 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:14" (1/1) ... [2023-12-21 13:32:14,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:32:14,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:32:14,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 13:32:14,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 13:32:14,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:32:14,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:32:14,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:32:14,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:32:15,028 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:32:15,030 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:32:15,344 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:32:15,377 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:32:15,378 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:32:15,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:32:15 BoogieIcfgContainer [2023-12-21 13:32:15,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:32:15,380 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:32:15,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:32:15,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:32:15,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:32:14" (1/3) ... [2023-12-21 13:32:15,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd8e589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:32:15, skipping insertion in model container [2023-12-21 13:32:15,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:14" (2/3) ... [2023-12-21 13:32:15,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd8e589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:32:15, skipping insertion in model container [2023-12-21 13:32:15,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:32:15" (3/3) ... [2023-12-21 13:32:15,384 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:32:15,397 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:32:15,397 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:32:15,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:32:15,436 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;@5a8ac41b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:32:15,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:32:15,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 135 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 13:32:15,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:15,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:15,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:15,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:15,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1132032002, now seen corresponding path program 1 times [2023-12-21 13:32:15,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:15,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591321299] [2023-12-21 13:32:15,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:15,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:15,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:15,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:15,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591321299] [2023-12-21 13:32:15,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591321299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:15,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:15,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:32:15,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719296194] [2023-12-21 13:32:15,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:15,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:32:15,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:15,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:32:15,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:15,837 INFO L87 Difference]: Start difference. First operand has 136 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 135 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:15,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:15,882 INFO L93 Difference]: Finished difference Result 324 states and 524 transitions. [2023-12-21 13:32:15,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:15,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-21 13:32:15,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:15,897 INFO L225 Difference]: With dead ends: 324 [2023-12-21 13:32:15,897 INFO L226 Difference]: Without dead ends: 218 [2023-12-21 13:32:15,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:15,901 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 166 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:15,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 479 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:32:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-21 13:32:15,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 216. [2023-12-21 13:32:15,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.5069767441860464) internal successors, (324), 215 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:15,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 324 transitions. [2023-12-21 13:32:15,952 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 324 transitions. Word has length 60 [2023-12-21 13:32:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:15,953 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 324 transitions. [2023-12-21 13:32:15,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:15,953 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 324 transitions. [2023-12-21 13:32:15,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 13:32:15,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:15,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:15,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:32:15,955 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:15,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:15,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1725262461, now seen corresponding path program 1 times [2023-12-21 13:32:15,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:15,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975877075] [2023-12-21 13:32:15,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:15,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:16,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:16,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975877075] [2023-12-21 13:32:16,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975877075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:16,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:16,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:32:16,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327703054] [2023-12-21 13:32:16,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:16,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:32:16,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:16,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:32:16,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:16,109 INFO L87 Difference]: Start difference. First operand 216 states and 324 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:16,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:16,147 INFO L93 Difference]: Finished difference Result 548 states and 852 transitions. [2023-12-21 13:32:16,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:16,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-21 13:32:16,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:16,154 INFO L225 Difference]: With dead ends: 548 [2023-12-21 13:32:16,155 INFO L226 Difference]: Without dead ends: 366 [2023-12-21 13:32:16,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:16,158 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 137 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:16,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 422 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:32:16,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-12-21 13:32:16,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 364. [2023-12-21 13:32:16,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.5399449035812671) internal successors, (559), 363 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 559 transitions. [2023-12-21 13:32:16,178 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 559 transitions. Word has length 61 [2023-12-21 13:32:16,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:16,178 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 559 transitions. [2023-12-21 13:32:16,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:16,179 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 559 transitions. [2023-12-21 13:32:16,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:32:16,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:16,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:16,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:32:16,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:16,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:16,181 INFO L85 PathProgramCache]: Analyzing trace with hash -696211435, now seen corresponding path program 1 times [2023-12-21 13:32:16,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:16,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321031997] [2023-12-21 13:32:16,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:16,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:16,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:16,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:16,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321031997] [2023-12-21 13:32:16,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321031997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:16,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:16,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:32:16,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999511178] [2023-12-21 13:32:16,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:16,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:32:16,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:16,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:32:16,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:16,281 INFO L87 Difference]: Start difference. First operand 364 states and 559 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:16,304 INFO L93 Difference]: Finished difference Result 960 states and 1505 transitions. [2023-12-21 13:32:16,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:16,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-21 13:32:16,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:16,308 INFO L225 Difference]: With dead ends: 960 [2023-12-21 13:32:16,308 INFO L226 Difference]: Without dead ends: 630 [2023-12-21 13:32:16,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:16,312 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 132 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:16,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 407 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:32:16,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-12-21 13:32:16,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 628. [2023-12-21 13:32:16,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.555023923444976) internal successors, (975), 627 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:16,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 975 transitions. [2023-12-21 13:32:16,342 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 975 transitions. Word has length 62 [2023-12-21 13:32:16,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:16,342 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 975 transitions. [2023-12-21 13:32:16,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:16,343 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 975 transitions. [2023-12-21 13:32:16,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:32:16,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:16,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:16,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:32:16,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:16,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:16,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1789306726, now seen corresponding path program 1 times [2023-12-21 13:32:16,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:16,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358011384] [2023-12-21 13:32:16,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:16,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:16,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:16,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:16,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358011384] [2023-12-21 13:32:16,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358011384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:16,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:16,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:32:16,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453101988] [2023-12-21 13:32:16,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:16,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:32:16,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:16,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:32:16,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:16,465 INFO L87 Difference]: Start difference. First operand 628 states and 975 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:16,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:16,481 INFO L93 Difference]: Finished difference Result 1688 states and 2649 transitions. [2023-12-21 13:32:16,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:16,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-21 13:32:16,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:16,485 INFO L225 Difference]: With dead ends: 1688 [2023-12-21 13:32:16,485 INFO L226 Difference]: Without dead ends: 1094 [2023-12-21 13:32:16,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:16,493 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 127 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:16,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 392 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:32:16,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2023-12-21 13:32:16,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1092. [2023-12-21 13:32:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1091 states have (on average 1.5572868927589367) internal successors, (1699), 1091 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:16,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1699 transitions. [2023-12-21 13:32:16,516 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1699 transitions. Word has length 63 [2023-12-21 13:32:16,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:16,517 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1699 transitions. [2023-12-21 13:32:16,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:16,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1699 transitions. [2023-12-21 13:32:16,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 13:32:16,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:16,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:16,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:32:16,523 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:16,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:16,524 INFO L85 PathProgramCache]: Analyzing trace with hash 125702204, now seen corresponding path program 1 times [2023-12-21 13:32:16,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:16,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581195007] [2023-12-21 13:32:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:16,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:16,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:16,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581195007] [2023-12-21 13:32:16,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581195007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:16,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:16,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:32:16,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680302011] [2023-12-21 13:32:16,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:16,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:32:16,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:16,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:32:16,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:16,691 INFO L87 Difference]: Start difference. First operand 1092 states and 1699 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:16,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:16,829 INFO L93 Difference]: Finished difference Result 7440 states and 11689 transitions. [2023-12-21 13:32:16,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:32:16,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-21 13:32:16,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:16,847 INFO L225 Difference]: With dead ends: 7440 [2023-12-21 13:32:16,847 INFO L226 Difference]: Without dead ends: 6382 [2023-12-21 13:32:16,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:32:16,851 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 1477 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:16,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 2339 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:32:16,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6382 states. [2023-12-21 13:32:16,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6382 to 2148. [2023-12-21 13:32:16,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2148 states, 2147 states have (on average 1.551467163483931) internal successors, (3331), 2147 states have internal predecessors, (3331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:16,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 3331 transitions. [2023-12-21 13:32:16,908 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 3331 transitions. Word has length 64 [2023-12-21 13:32:16,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:16,909 INFO L495 AbstractCegarLoop]: Abstraction has 2148 states and 3331 transitions. [2023-12-21 13:32:16,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:16,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 3331 transitions. [2023-12-21 13:32:16,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 13:32:16,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:16,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:16,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:32:16,911 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:16,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:16,912 INFO L85 PathProgramCache]: Analyzing trace with hash -417655209, now seen corresponding path program 1 times [2023-12-21 13:32:16,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:16,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095739367] [2023-12-21 13:32:16,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:16,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:17,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:17,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095739367] [2023-12-21 13:32:17,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095739367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:17,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:17,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:32:17,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082549753] [2023-12-21 13:32:17,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:17,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:32:17,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:17,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:32:17,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:17,148 INFO L87 Difference]: Start difference. First operand 2148 states and 3331 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:17,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:17,266 INFO L93 Difference]: Finished difference Result 11278 states and 17448 transitions. [2023-12-21 13:32:17,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:32:17,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-21 13:32:17,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:17,292 INFO L225 Difference]: With dead ends: 11278 [2023-12-21 13:32:17,292 INFO L226 Difference]: Without dead ends: 9164 [2023-12-21 13:32:17,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:17,301 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 674 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:17,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1033 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:32:17,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9164 states. [2023-12-21 13:32:17,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9164 to 9156. [2023-12-21 13:32:17,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9156 states, 9155 states have (on average 1.5417804478427088) internal successors, (14115), 9155 states have internal predecessors, (14115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:17,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9156 states to 9156 states and 14115 transitions. [2023-12-21 13:32:17,493 INFO L78 Accepts]: Start accepts. Automaton has 9156 states and 14115 transitions. Word has length 65 [2023-12-21 13:32:17,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:17,494 INFO L495 AbstractCegarLoop]: Abstraction has 9156 states and 14115 transitions. [2023-12-21 13:32:17,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:17,494 INFO L276 IsEmpty]: Start isEmpty. Operand 9156 states and 14115 transitions. [2023-12-21 13:32:17,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 13:32:17,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:17,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:17,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:32:17,495 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:17,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:17,495 INFO L85 PathProgramCache]: Analyzing trace with hash 650635450, now seen corresponding path program 1 times [2023-12-21 13:32:17,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:17,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583623133] [2023-12-21 13:32:17,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:17,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:17,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:17,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583623133] [2023-12-21 13:32:17,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583623133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:17,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:17,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:32:17,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085831409] [2023-12-21 13:32:17,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:17,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:32:17,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:17,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:32:17,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:17,538 INFO L87 Difference]: Start difference. First operand 9156 states and 14115 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:17,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:17,613 INFO L93 Difference]: Finished difference Result 24680 states and 37893 transitions. [2023-12-21 13:32:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:17,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-21 13:32:17,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:17,658 INFO L225 Difference]: With dead ends: 24680 [2023-12-21 13:32:17,658 INFO L226 Difference]: Without dead ends: 15558 [2023-12-21 13:32:17,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:17,671 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 144 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:17,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 462 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:32:17,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15558 states. [2023-12-21 13:32:17,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15558 to 15556. [2023-12-21 13:32:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15556 states, 15555 states have (on average 1.520475731276117) internal successors, (23651), 15555 states have internal predecessors, (23651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:18,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15556 states to 15556 states and 23651 transitions. [2023-12-21 13:32:18,016 INFO L78 Accepts]: Start accepts. Automaton has 15556 states and 23651 transitions. Word has length 66 [2023-12-21 13:32:18,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:18,016 INFO L495 AbstractCegarLoop]: Abstraction has 15556 states and 23651 transitions. [2023-12-21 13:32:18,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:18,017 INFO L276 IsEmpty]: Start isEmpty. Operand 15556 states and 23651 transitions. [2023-12-21 13:32:18,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 13:32:18,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:18,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:18,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:32:18,018 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:18,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:18,018 INFO L85 PathProgramCache]: Analyzing trace with hash -889607872, now seen corresponding path program 1 times [2023-12-21 13:32:18,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:18,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801295797] [2023-12-21 13:32:18,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:18,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:18,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:18,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801295797] [2023-12-21 13:32:18,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801295797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:18,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:18,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:32:18,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289440479] [2023-12-21 13:32:18,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:18,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:32:18,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:18,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:32:18,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:32:18,087 INFO L87 Difference]: Start difference. First operand 15556 states and 23651 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:18,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:18,397 INFO L93 Difference]: Finished difference Result 46600 states and 70885 transitions. [2023-12-21 13:32:18,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:32:18,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-21 13:32:18,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:18,451 INFO L225 Difference]: With dead ends: 46600 [2023-12-21 13:32:18,452 INFO L226 Difference]: Without dead ends: 31078 [2023-12-21 13:32:18,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:18,478 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 843 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:18,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 216 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:32:18,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31078 states. [2023-12-21 13:32:18,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31078 to 31076. [2023-12-21 13:32:18,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31076 states, 31075 states have (on average 1.5117940466613033) internal successors, (46979), 31075 states have internal predecessors, (46979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:19,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31076 states to 31076 states and 46979 transitions. [2023-12-21 13:32:19,035 INFO L78 Accepts]: Start accepts. Automaton has 31076 states and 46979 transitions. Word has length 67 [2023-12-21 13:32:19,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:19,035 INFO L495 AbstractCegarLoop]: Abstraction has 31076 states and 46979 transitions. [2023-12-21 13:32:19,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:19,036 INFO L276 IsEmpty]: Start isEmpty. Operand 31076 states and 46979 transitions. [2023-12-21 13:32:19,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 13:32:19,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:19,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:19,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:32:19,041 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:19,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:19,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2008403493, now seen corresponding path program 1 times [2023-12-21 13:32:19,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:19,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311481774] [2023-12-21 13:32:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:19,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:19,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:19,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311481774] [2023-12-21 13:32:19,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311481774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:19,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:19,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:32:19,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762120511] [2023-12-21 13:32:19,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:19,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:32:19,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:19,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:32:19,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:32:19,228 INFO L87 Difference]: Start difference. First operand 31076 states and 46979 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:19,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:19,409 INFO L93 Difference]: Finished difference Result 63398 states and 95204 transitions. [2023-12-21 13:32:19,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:32:19,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-21 13:32:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:19,614 INFO L225 Difference]: With dead ends: 63398 [2023-12-21 13:32:19,614 INFO L226 Difference]: Without dead ends: 63396 [2023-12-21 13:32:19,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:32:19,631 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 306 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:19,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 948 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:32:19,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63396 states. [2023-12-21 13:32:20,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63396 to 32356. [2023-12-21 13:32:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32356 states, 32355 states have (on average 1.4915469015608098) internal successors, (48259), 32355 states have internal predecessors, (48259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32356 states to 32356 states and 48259 transitions. [2023-12-21 13:32:20,388 INFO L78 Accepts]: Start accepts. Automaton has 32356 states and 48259 transitions. Word has length 67 [2023-12-21 13:32:20,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:20,388 INFO L495 AbstractCegarLoop]: Abstraction has 32356 states and 48259 transitions. [2023-12-21 13:32:20,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:20,389 INFO L276 IsEmpty]: Start isEmpty. Operand 32356 states and 48259 transitions. [2023-12-21 13:32:20,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 13:32:20,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:20,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:20,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:32:20,389 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:20,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:20,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2141539230, now seen corresponding path program 1 times [2023-12-21 13:32:20,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:20,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732095814] [2023-12-21 13:32:20,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:20,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:20,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:20,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:20,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732095814] [2023-12-21 13:32:20,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732095814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:20,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:20,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:32:20,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591025502] [2023-12-21 13:32:20,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:20,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:32:20,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:20,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:32:20,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:20,450 INFO L87 Difference]: Start difference. First operand 32356 states and 48259 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:20,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:20,612 INFO L93 Difference]: Finished difference Result 72282 states and 107623 transitions. [2023-12-21 13:32:20,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:20,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-21 13:32:20,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:20,663 INFO L225 Difference]: With dead ends: 72282 [2023-12-21 13:32:20,663 INFO L226 Difference]: Without dead ends: 39960 [2023-12-21 13:32:20,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:20,824 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 114 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:20,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 343 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:32:20,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39960 states. [2023-12-21 13:32:21,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39960 to 39814. [2023-12-21 13:32:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39814 states, 39813 states have (on average 1.4810489036244443) internal successors, (58965), 39813 states have internal predecessors, (58965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:21,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39814 states to 39814 states and 58965 transitions. [2023-12-21 13:32:21,256 INFO L78 Accepts]: Start accepts. Automaton has 39814 states and 58965 transitions. Word has length 68 [2023-12-21 13:32:21,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:21,257 INFO L495 AbstractCegarLoop]: Abstraction has 39814 states and 58965 transitions. [2023-12-21 13:32:21,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:21,258 INFO L276 IsEmpty]: Start isEmpty. Operand 39814 states and 58965 transitions. [2023-12-21 13:32:21,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 13:32:21,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:21,271 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:21,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:32:21,271 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:21,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:21,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1989798597, now seen corresponding path program 1 times [2023-12-21 13:32:21,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:21,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270678492] [2023-12-21 13:32:21,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:21,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:21,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:21,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270678492] [2023-12-21 13:32:21,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270678492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:21,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:21,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:32:21,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163796042] [2023-12-21 13:32:21,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:21,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:32:21,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:21,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:32:21,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:21,470 INFO L87 Difference]: Start difference. First operand 39814 states and 58965 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:21,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:21,708 INFO L93 Difference]: Finished difference Result 102667 states and 152217 transitions. [2023-12-21 13:32:21,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:21,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 13:32:21,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:21,805 INFO L225 Difference]: With dead ends: 102667 [2023-12-21 13:32:21,805 INFO L226 Difference]: Without dead ends: 69257 [2023-12-21 13:32:21,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:21,847 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 117 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:21,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 479 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:32:21,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69257 states. [2023-12-21 13:32:22,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69257 to 69255. [2023-12-21 13:32:22,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69255 states, 69254 states have (on average 1.470860888901724) internal successors, (101863), 69254 states have internal predecessors, (101863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:22,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69255 states to 69255 states and 101863 transitions. [2023-12-21 13:32:22,954 INFO L78 Accepts]: Start accepts. Automaton has 69255 states and 101863 transitions. Word has length 95 [2023-12-21 13:32:22,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:22,954 INFO L495 AbstractCegarLoop]: Abstraction has 69255 states and 101863 transitions. [2023-12-21 13:32:22,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 69255 states and 101863 transitions. [2023-12-21 13:32:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 13:32:22,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:22,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:22,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:32:22,978 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:22,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:22,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1309326168, now seen corresponding path program 1 times [2023-12-21 13:32:22,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:22,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153426925] [2023-12-21 13:32:22,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:22,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:23,525 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:23,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:23,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153426925] [2023-12-21 13:32:23,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153426925] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:32:23,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872598243] [2023-12-21 13:32:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:23,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:32:23,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:32:23,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:32:23,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 13:32:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:23,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 13:32:23,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:32:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:32:23,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:32:23,955 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:32:23,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872598243] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:32:23,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:32:23,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 13 [2023-12-21 13:32:23,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822621069] [2023-12-21 13:32:23,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:32:23,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:32:23,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:23,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:32:23,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:32:23,957 INFO L87 Difference]: Start difference. First operand 69255 states and 101863 transitions. Second operand has 13 states, 13 states have (on average 21.076923076923077) internal successors, (274), 13 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:32,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:32,111 INFO L93 Difference]: Finished difference Result 711367 states and 1034531 transitions. [2023-12-21 13:32:32,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-12-21 13:32:32,112 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 21.076923076923077) internal successors, (274), 13 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 13:32:32,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:33,404 INFO L225 Difference]: With dead ends: 711367 [2023-12-21 13:32:33,405 INFO L226 Difference]: Without dead ends: 648421 [2023-12-21 13:32:33,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6324 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2518, Invalid=12244, Unknown=0, NotChecked=0, Total=14762 [2023-12-21 13:32:33,548 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 10163 mSDsluCounter, 4603 mSDsCounter, 0 mSdLazyCounter, 4392 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10163 SdHoareTripleChecker+Valid, 5387 SdHoareTripleChecker+Invalid, 4433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 4392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:33,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10163 Valid, 5387 Invalid, 4433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 4392 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-21 13:32:34,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648421 states. [2023-12-21 13:32:40,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648421 to 357055. [2023-12-21 13:32:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357055 states, 357054 states have (on average 1.4471172427700012) internal successors, (516699), 357054 states have internal predecessors, (516699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:42,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357055 states to 357055 states and 516699 transitions. [2023-12-21 13:32:42,058 INFO L78 Accepts]: Start accepts. Automaton has 357055 states and 516699 transitions. Word has length 95 [2023-12-21 13:32:42,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:42,058 INFO L495 AbstractCegarLoop]: Abstraction has 357055 states and 516699 transitions. [2023-12-21 13:32:42,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 21.076923076923077) internal successors, (274), 13 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:42,058 INFO L276 IsEmpty]: Start isEmpty. Operand 357055 states and 516699 transitions. [2023-12-21 13:32:42,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 13:32:42,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:42,092 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:42,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 13:32:42,301 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,SelfDestructingSolverStorable11 [2023-12-21 13:32:42,301 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:42,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:42,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1843199300, now seen corresponding path program 1 times [2023-12-21 13:32:42,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:42,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033407772] [2023-12-21 13:32:42,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:42,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:42,407 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 13:32:42,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:42,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033407772] [2023-12-21 13:32:42,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033407772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:42,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:42,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:32:42,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965068876] [2023-12-21 13:32:42,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:42,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:32:42,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:42,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:32:42,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:42,409 INFO L87 Difference]: Start difference. First operand 357055 states and 516699 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:44,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:44,991 INFO L93 Difference]: Finished difference Result 846271 states and 1232137 transitions. [2023-12-21 13:32:44,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:32:44,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 13:32:44,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:46,419 INFO L225 Difference]: With dead ends: 846271 [2023-12-21 13:32:46,419 INFO L226 Difference]: Without dead ends: 682209 [2023-12-21 13:32:46,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:32:46,574 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1239 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:46,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 1751 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:32:47,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682209 states. [2023-12-21 13:32:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682209 to 495131. [2023-12-21 13:32:53,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495131 states, 495130 states have (on average 1.4444024801567266) internal successors, (715167), 495130 states have internal predecessors, (715167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495131 states to 495131 states and 715167 transitions. [2023-12-21 13:32:55,263 INFO L78 Accepts]: Start accepts. Automaton has 495131 states and 715167 transitions. Word has length 95 [2023-12-21 13:32:55,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:55,264 INFO L495 AbstractCegarLoop]: Abstraction has 495131 states and 715167 transitions. [2023-12-21 13:32:55,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:55,264 INFO L276 IsEmpty]: Start isEmpty. Operand 495131 states and 715167 transitions. [2023-12-21 13:32:55,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 13:32:55,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:55,284 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:55,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:32:55,285 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:55,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:55,285 INFO L85 PathProgramCache]: Analyzing trace with hash -346279721, now seen corresponding path program 1 times [2023-12-21 13:32:55,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:55,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14428683] [2023-12-21 13:32:55,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:55,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:55,335 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:55,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:55,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14428683] [2023-12-21 13:32:55,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14428683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:55,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:55,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:32:55,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916696046] [2023-12-21 13:32:55,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:55,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:32:55,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:55,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:32:55,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:55,336 INFO L87 Difference]: Start difference. First operand 495131 states and 715167 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:59,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:59,615 INFO L93 Difference]: Finished difference Result 1146267 states and 1655576 transitions. [2023-12-21 13:32:59,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:59,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 13:32:59,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:01,315 INFO L225 Difference]: With dead ends: 1146267 [2023-12-21 13:33:01,315 INFO L226 Difference]: Without dead ends: 774469 [2023-12-21 13:33:01,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:01,524 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 117 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:01,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 408 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:33:02,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774469 states. [2023-12-21 13:33:11,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774469 to 736923. [2023-12-21 13:33:11,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736923 states, 736922 states have (on average 1.431915453738659) internal successors, (1055210), 736922 states have internal predecessors, (1055210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:14,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736923 states to 736923 states and 1055210 transitions. [2023-12-21 13:33:14,963 INFO L78 Accepts]: Start accepts. Automaton has 736923 states and 1055210 transitions. Word has length 95 [2023-12-21 13:33:14,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:14,963 INFO L495 AbstractCegarLoop]: Abstraction has 736923 states and 1055210 transitions. [2023-12-21 13:33:14,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:14,963 INFO L276 IsEmpty]: Start isEmpty. Operand 736923 states and 1055210 transitions. [2023-12-21 13:33:14,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 13:33:14,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:14,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:33:14,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:33:14,989 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:14,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:14,990 INFO L85 PathProgramCache]: Analyzing trace with hash 605229460, now seen corresponding path program 1 times [2023-12-21 13:33:14,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:14,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365852640] [2023-12-21 13:33:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:14,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:15,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:15,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365852640] [2023-12-21 13:33:15,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365852640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:15,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:15,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:33:15,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102026007] [2023-12-21 13:33:15,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:15,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:33:15,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:15,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:33:15,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:15,051 INFO L87 Difference]: Start difference. First operand 736923 states and 1055210 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:20,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:20,268 INFO L93 Difference]: Finished difference Result 1524255 states and 2176091 transitions. [2023-12-21 13:33:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:33:20,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 13:33:20,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:23,563 INFO L225 Difference]: With dead ends: 1524255 [2023-12-21 13:33:23,563 INFO L226 Difference]: Without dead ends: 1040885 [2023-12-21 13:33:24,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:24,140 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 118 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:24,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 427 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:33:25,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040885 states. [2023-12-21 13:33:36,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040885 to 994367. [2023-12-21 13:33:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994367 states, 994366 states have (on average 1.4149266970109597) internal successors, (1406955), 994366 states have internal predecessors, (1406955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:43,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994367 states to 994367 states and 1406955 transitions. [2023-12-21 13:33:43,184 INFO L78 Accepts]: Start accepts. Automaton has 994367 states and 1406955 transitions. Word has length 95 [2023-12-21 13:33:43,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:43,184 INFO L495 AbstractCegarLoop]: Abstraction has 994367 states and 1406955 transitions. [2023-12-21 13:33:43,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:43,184 INFO L276 IsEmpty]: Start isEmpty. Operand 994367 states and 1406955 transitions. [2023-12-21 13:33:43,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 13:33:43,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:43,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:33:43,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:33:43,224 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:43,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:43,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1271453317, now seen corresponding path program 1 times [2023-12-21 13:33:43,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:43,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794043822] [2023-12-21 13:33:43,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:43,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:43,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:43,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794043822] [2023-12-21 13:33:43,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794043822] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:43,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:43,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:33:43,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313179705] [2023-12-21 13:33:43,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:43,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:33:43,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:43,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:33:43,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:43,351 INFO L87 Difference]: Start difference. First operand 994367 states and 1406955 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:50,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:50,515 INFO L93 Difference]: Finished difference Result 1615788 states and 2276555 transitions. [2023-12-21 13:33:50,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:33:50,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 13:33:50,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted.