/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:54:10,912 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:54:10,982 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:54:10,991 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:54:10,991 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:54:11,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:54:11,014 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:54:11,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:54:11,015 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:54:11,018 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:54:11,018 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:54:11,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:54:11,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:54:11,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:54:11,020 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:54:11,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:54:11,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:54:11,020 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:54:11,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:54:11,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:54:11,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:54:11,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:54:11,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:54:11,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:54:11,022 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:54:11,022 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:54:11,022 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:54:11,022 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:54:11,023 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:54:11,023 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:54:11,024 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:54:11,024 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:54:11,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:54:11,024 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:54:11,024 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:54:11,024 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:54:11,024 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:54:11,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:54:11,025 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:54:11,025 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:54:11,025 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:54:11,025 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:54:11,025 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:54:11,025 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:54:11,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:54:11,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:54:11,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:54:11,210 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:54:11,214 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:54:11,215 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label19.c [2023-12-15 18:54:12,221 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:54:12,543 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:54:12,544 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label19.c [2023-12-15 18:54:12,571 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b64066e1/c97c09c6c4e84adc8f4525ba45e67496/FLAG7e68cddfe [2023-12-15 18:54:12,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b64066e1/c97c09c6c4e84adc8f4525ba45e67496 [2023-12-15 18:54:12,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:54:12,587 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:54:12,589 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:54:12,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:54:12,593 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:54:12,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:54:12" (1/1) ... [2023-12-15 18:54:12,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5574cd17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:54:12, skipping insertion in model container [2023-12-15 18:54:12,594 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:54:12" (1/1) ... [2023-12-15 18:54:12,698 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:54:12,905 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label19.c[2731,2744] [2023-12-15 18:54:13,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:54:13,583 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:54:13,598 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label19.c[2731,2744] [2023-12-15 18:54:13,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:54:13,948 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:54:13,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:54:13 WrapperNode [2023-12-15 18:54:13,949 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:54:13,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:54:13,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:54:13,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:54:13,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:54:13" (1/1) ... [2023-12-15 18:54:14,008 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:54:13" (1/1) ... [2023-12-15 18:54:14,491 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-15 18:54:14,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:54:14,492 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:54:14,492 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:54:14,492 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:54:14,499 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:54:13" (1/1) ... [2023-12-15 18:54:14,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:54:13" (1/1) ... [2023-12-15 18:54:14,590 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:54:13" (1/1) ... [2023-12-15 18:54:14,739 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:54:14,739 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:54:13" (1/1) ... [2023-12-15 18:54:14,740 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:54:13" (1/1) ... [2023-12-15 18:54:14,906 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:54:13" (1/1) ... [2023-12-15 18:54:14,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:54:13" (1/1) ... [2023-12-15 18:54:14,949 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:54:13" (1/1) ... [2023-12-15 18:54:14,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:54:13" (1/1) ... [2023-12-15 18:54:15,070 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:54:15,075 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:54:15,075 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:54:15,075 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:54:15,076 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:54:13" (1/1) ... [2023-12-15 18:54:15,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:54:15,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:54:15,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:54:15,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:54:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:54:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:54:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:54:15,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:54:15,197 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:54:15,199 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:54:18,596 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:54:18,631 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:54:18,631 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:54:18,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:54:18 BoogieIcfgContainer [2023-12-15 18:54:18,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:54:18,633 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:54:18,633 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:54:18,635 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:54:18,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:54:12" (1/3) ... [2023-12-15 18:54:18,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1432ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:54:18, skipping insertion in model container [2023-12-15 18:54:18,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:54:13" (2/3) ... [2023-12-15 18:54:18,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1432ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:54:18, skipping insertion in model container [2023-12-15 18:54:18,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:54:18" (3/3) ... [2023-12-15 18:54:18,637 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label19.c [2023-12-15 18:54:18,648 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:54:18,648 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:54:18,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:54:18,765 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;@60d9da88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:54:18,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:54:18,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 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) [2023-12-15 18:54:18,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-15 18:54:18,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:18,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:18,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:18,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:18,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1011860660, now seen corresponding path program 1 times [2023-12-15 18:54:18,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:18,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876545570] [2023-12-15 18:54:18,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:18,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:18,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:18,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876545570] [2023-12-15 18:54:18,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876545570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:18,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:18,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:18,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871147296] [2023-12-15 18:54:18,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:18,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:54:18,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:18,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:54:18,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:54:18,902 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 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 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2023-12-15 18:54:18,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:18,961 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-15 18:54:18,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:54:18,969 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2023-12-15 18:54:18,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:18,982 INFO L225 Difference]: With dead ends: 2071 [2023-12-15 18:54:18,982 INFO L226 Difference]: Without dead ends: 1034 [2023-12-15 18:54:18,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:54:18,989 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:18,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:54:19,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-15 18:54:19,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-15 18:54:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 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) [2023-12-15 18:54:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-15 18:54:19,050 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 16 [2023-12-15 18:54:19,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:19,051 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-15 18:54:19,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2023-12-15 18:54:19,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-15 18:54:19,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-15 18:54:19,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:19,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:19,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:54:19,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:19,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:19,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1327459792, now seen corresponding path program 1 times [2023-12-15 18:54:19,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:19,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801924866] [2023-12-15 18:54:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:19,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:19,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:19,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801924866] [2023-12-15 18:54:19,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801924866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:19,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:19,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:19,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139577484] [2023-12-15 18:54:19,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:19,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:19,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:19,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:19,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:19,113 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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) [2023-12-15 18:54:22,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:22,721 INFO L93 Difference]: Finished difference Result 3015 states and 5510 transitions. [2023-12-15 18:54:22,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:22,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2023-12-15 18:54:22,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:22,744 INFO L225 Difference]: With dead ends: 3015 [2023-12-15 18:54:22,744 INFO L226 Difference]: Without dead ends: 1982 [2023-12-15 18:54:22,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:22,746 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 1038 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:22,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 317 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-15 18:54:22,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2023-12-15 18:54:22,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1929. [2023-12-15 18:54:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 1.7977178423236515) internal successors, (3466), 1928 states have internal predecessors, (3466), 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) [2023-12-15 18:54:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3466 transitions. [2023-12-15 18:54:22,807 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3466 transitions. Word has length 16 [2023-12-15 18:54:22,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:22,808 INFO L495 AbstractCegarLoop]: Abstraction has 1929 states and 3466 transitions. [2023-12-15 18:54:22,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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) [2023-12-15 18:54:22,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3466 transitions. [2023-12-15 18:54:22,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-15 18:54:22,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:22,810 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:22,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:54:22,810 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:22,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:22,810 INFO L85 PathProgramCache]: Analyzing trace with hash -659351013, now seen corresponding path program 1 times [2023-12-15 18:54:22,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:22,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836005010] [2023-12-15 18:54:22,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:22,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:22,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:22,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836005010] [2023-12-15 18:54:22,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836005010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:22,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:22,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:22,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777809885] [2023-12-15 18:54:22,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:22,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:22,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:22,984 INFO L87 Difference]: Start difference. First operand 1929 states and 3466 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2023-12-15 18:54:26,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:26,262 INFO L93 Difference]: Finished difference Result 5455 states and 9916 transitions. [2023-12-15 18:54:26,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:26,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 81 [2023-12-15 18:54:26,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:26,294 INFO L225 Difference]: With dead ends: 5455 [2023-12-15 18:54:26,294 INFO L226 Difference]: Without dead ends: 3527 [2023-12-15 18:54:26,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:26,297 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:26,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1005 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-15 18:54:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2023-12-15 18:54:26,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3525. [2023-12-15 18:54:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3524 states have (on average 1.5672531214528944) internal successors, (5523), 3524 states have internal predecessors, (5523), 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) [2023-12-15 18:54:26,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5523 transitions. [2023-12-15 18:54:26,347 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5523 transitions. Word has length 81 [2023-12-15 18:54:26,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:26,348 INFO L495 AbstractCegarLoop]: Abstraction has 3525 states and 5523 transitions. [2023-12-15 18:54:26,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2023-12-15 18:54:26,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5523 transitions. [2023-12-15 18:54:26,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-15 18:54:26,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:26,350 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:26,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:54:26,350 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:26,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:26,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2058955734, now seen corresponding path program 1 times [2023-12-15 18:54:26,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:26,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157430999] [2023-12-15 18:54:26,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:26,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:26,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:26,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157430999] [2023-12-15 18:54:26,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157430999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:26,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:26,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:26,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123550521] [2023-12-15 18:54:26,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:26,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:26,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:26,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:26,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:26,477 INFO L87 Difference]: Start difference. First operand 3525 states and 5523 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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) [2023-12-15 18:54:29,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:29,592 INFO L93 Difference]: Finished difference Result 10231 states and 16096 transitions. [2023-12-15 18:54:29,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:29,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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 87 [2023-12-15 18:54:29,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:29,614 INFO L225 Difference]: With dead ends: 10231 [2023-12-15 18:54:29,614 INFO L226 Difference]: Without dead ends: 6707 [2023-12-15 18:54:29,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:29,628 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:29,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 848 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 18:54:29,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6707 states. [2023-12-15 18:54:29,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6707 to 6699. [2023-12-15 18:54:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 6698 states have (on average 1.4131083905643476) internal successors, (9465), 6698 states have internal predecessors, (9465), 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) [2023-12-15 18:54:29,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9465 transitions. [2023-12-15 18:54:29,742 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9465 transitions. Word has length 87 [2023-12-15 18:54:29,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:29,743 INFO L495 AbstractCegarLoop]: Abstraction has 6699 states and 9465 transitions. [2023-12-15 18:54:29,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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) [2023-12-15 18:54:29,743 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9465 transitions. [2023-12-15 18:54:29,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-15 18:54:29,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:29,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:29,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:54:29,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:29,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:29,748 INFO L85 PathProgramCache]: Analyzing trace with hash -619100555, now seen corresponding path program 1 times [2023-12-15 18:54:29,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:29,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305595875] [2023-12-15 18:54:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:29,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:29,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:29,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305595875] [2023-12-15 18:54:29,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305595875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:29,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:29,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:29,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098239464] [2023-12-15 18:54:29,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:29,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:29,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:29,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:29,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:29,927 INFO L87 Difference]: Start difference. First operand 6699 states and 9465 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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) [2023-12-15 18:54:33,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:33,316 INFO L93 Difference]: Finished difference Result 17442 states and 24478 transitions. [2023-12-15 18:54:33,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:33,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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 117 [2023-12-15 18:54:33,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:33,348 INFO L225 Difference]: With dead ends: 17442 [2023-12-15 18:54:33,348 INFO L226 Difference]: Without dead ends: 10744 [2023-12-15 18:54:33,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:33,359 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:33,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 963 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-15 18:54:33,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2023-12-15 18:54:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 10668. [2023-12-15 18:54:33,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3563326146057935) internal successors, (14468), 10667 states have internal predecessors, (14468), 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) [2023-12-15 18:54:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14468 transitions. [2023-12-15 18:54:33,502 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14468 transitions. Word has length 117 [2023-12-15 18:54:33,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:33,503 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14468 transitions. [2023-12-15 18:54:33,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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) [2023-12-15 18:54:33,504 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14468 transitions. [2023-12-15 18:54:33,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-15 18:54:33,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:33,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:33,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:54:33,507 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:33,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:33,507 INFO L85 PathProgramCache]: Analyzing trace with hash 777516302, now seen corresponding path program 1 times [2023-12-15 18:54:33,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:33,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642481327] [2023-12-15 18:54:33,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:33,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:33,605 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:33,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:33,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642481327] [2023-12-15 18:54:33,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642481327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:33,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:33,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:54:33,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555380421] [2023-12-15 18:54:33,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:33,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:33,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:33,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:33,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:33,608 INFO L87 Difference]: Start difference. First operand 10668 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2023-12-15 18:54:37,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:37,349 INFO L93 Difference]: Finished difference Result 29990 states and 41179 transitions. [2023-12-15 18:54:37,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:37,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2023-12-15 18:54:37,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:37,383 INFO L225 Difference]: With dead ends: 29990 [2023-12-15 18:54:37,384 INFO L226 Difference]: Without dead ends: 20110 [2023-12-15 18:54:37,394 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 [2023-12-15 18:54:37,395 INFO L413 NwaCegarLoop]: 1857 mSDtfsCounter, 916 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:37,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1995 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-15 18:54:37,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20110 states. [2023-12-15 18:54:37,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20110 to 19313. [2023-12-15 18:54:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19313 states, 19312 states have (on average 1.282156172328086) internal successors, (24761), 19312 states have internal predecessors, (24761), 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) [2023-12-15 18:54:37,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19313 states to 19313 states and 24761 transitions. [2023-12-15 18:54:37,669 INFO L78 Accepts]: Start accepts. Automaton has 19313 states and 24761 transitions. Word has length 127 [2023-12-15 18:54:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:37,670 INFO L495 AbstractCegarLoop]: Abstraction has 19313 states and 24761 transitions. [2023-12-15 18:54:37,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2023-12-15 18:54:37,671 INFO L276 IsEmpty]: Start isEmpty. Operand 19313 states and 24761 transitions. [2023-12-15 18:54:37,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-15 18:54:37,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:37,672 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:37,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:54:37,672 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:37,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:37,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1417603317, now seen corresponding path program 1 times [2023-12-15 18:54:37,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:37,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051285756] [2023-12-15 18:54:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:37,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:37,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:37,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051285756] [2023-12-15 18:54:37,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051285756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:37,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:37,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:37,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138165170] [2023-12-15 18:54:37,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:37,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:37,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:37,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:37,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:37,855 INFO L87 Difference]: Start difference. First operand 19313 states and 24761 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2023-12-15 18:54:41,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:41,057 INFO L93 Difference]: Finished difference Result 44941 states and 56979 transitions. [2023-12-15 18:54:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:41,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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 132 [2023-12-15 18:54:41,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:41,091 INFO L225 Difference]: With dead ends: 44941 [2023-12-15 18:54:41,091 INFO L226 Difference]: Without dead ends: 25629 [2023-12-15 18:54:41,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:41,107 INFO L413 NwaCegarLoop]: 1043 mSDtfsCounter, 728 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2724 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:41,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1222 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2724 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 18:54:41,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25629 states. [2023-12-15 18:54:41,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25629 to 25621. [2023-12-15 18:54:41,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25621 states, 25620 states have (on average 1.2332552693208432) internal successors, (31596), 25620 states have internal predecessors, (31596), 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) [2023-12-15 18:54:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25621 states to 25621 states and 31596 transitions. [2023-12-15 18:54:41,346 INFO L78 Accepts]: Start accepts. Automaton has 25621 states and 31596 transitions. Word has length 132 [2023-12-15 18:54:41,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:41,347 INFO L495 AbstractCegarLoop]: Abstraction has 25621 states and 31596 transitions. [2023-12-15 18:54:41,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2023-12-15 18:54:41,347 INFO L276 IsEmpty]: Start isEmpty. Operand 25621 states and 31596 transitions. [2023-12-15 18:54:41,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-15 18:54:41,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:41,349 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:41,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:54:41,349 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:41,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:41,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1122043964, now seen corresponding path program 1 times [2023-12-15 18:54:41,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:41,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60643058] [2023-12-15 18:54:41,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:41,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-15 18:54:41,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:41,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60643058] [2023-12-15 18:54:41,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60643058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:41,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:41,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:41,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639775065] [2023-12-15 18:54:41,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:41,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:41,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:41,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:41,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:41,457 INFO L87 Difference]: Start difference. First operand 25621 states and 31596 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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) [2023-12-15 18:54:44,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:44,576 INFO L93 Difference]: Finished difference Result 70952 states and 88337 transitions. [2023-12-15 18:54:44,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:44,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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 170 [2023-12-15 18:54:44,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:44,627 INFO L225 Difference]: With dead ends: 70952 [2023-12-15 18:54:44,627 INFO L226 Difference]: Without dead ends: 46119 [2023-12-15 18:54:44,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:44,653 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 781 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 3304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:44,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1227 Invalid, 3304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 18:54:44,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46119 states. [2023-12-15 18:54:44,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46119 to 42945. [2023-12-15 18:54:44,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42945 states, 42944 states have (on average 1.1722242921013413) internal successors, (50340), 42944 states have internal predecessors, (50340), 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) [2023-12-15 18:54:45,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42945 states to 42945 states and 50340 transitions. [2023-12-15 18:54:45,037 INFO L78 Accepts]: Start accepts. Automaton has 42945 states and 50340 transitions. Word has length 170 [2023-12-15 18:54:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:45,037 INFO L495 AbstractCegarLoop]: Abstraction has 42945 states and 50340 transitions. [2023-12-15 18:54:45,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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) [2023-12-15 18:54:45,037 INFO L276 IsEmpty]: Start isEmpty. Operand 42945 states and 50340 transitions. [2023-12-15 18:54:45,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-15 18:54:45,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:45,039 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:45,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:54:45,039 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:45,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:45,040 INFO L85 PathProgramCache]: Analyzing trace with hash -380916346, now seen corresponding path program 1 times [2023-12-15 18:54:45,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:45,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137696225] [2023-12-15 18:54:45,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:45,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-15 18:54:45,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:45,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137696225] [2023-12-15 18:54:45,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137696225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:45,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:45,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:45,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712134283] [2023-12-15 18:54:45,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:45,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:45,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:45,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:45,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:45,285 INFO L87 Difference]: Start difference. First operand 42945 states and 50340 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 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) [2023-12-15 18:54:48,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:48,141 INFO L93 Difference]: Finished difference Result 85102 states and 99882 transitions. [2023-12-15 18:54:48,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:48,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 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 236 [2023-12-15 18:54:48,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:48,231 INFO L225 Difference]: With dead ends: 85102 [2023-12-15 18:54:48,241 INFO L226 Difference]: Without dead ends: 42945 [2023-12-15 18:54:48,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:48,272 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2502 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 2506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:48,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1191 Invalid, 2506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2502 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:54:48,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42945 states. [2023-12-15 18:54:48,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42945 to 42945. [2023-12-15 18:54:48,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42945 states, 42944 states have (on average 1.1721078614008942) internal successors, (50335), 42944 states have internal predecessors, (50335), 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) [2023-12-15 18:54:48,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42945 states to 42945 states and 50335 transitions. [2023-12-15 18:54:48,890 INFO L78 Accepts]: Start accepts. Automaton has 42945 states and 50335 transitions. Word has length 236 [2023-12-15 18:54:48,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:48,890 INFO L495 AbstractCegarLoop]: Abstraction has 42945 states and 50335 transitions. [2023-12-15 18:54:48,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 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) [2023-12-15 18:54:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 42945 states and 50335 transitions. [2023-12-15 18:54:48,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-15 18:54:48,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:48,893 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:48,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:54:48,893 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:48,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:48,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1015228177, now seen corresponding path program 1 times [2023-12-15 18:54:48,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:48,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179830354] [2023-12-15 18:54:48,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:48,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:49,102 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:49,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:49,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179830354] [2023-12-15 18:54:49,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179830354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:49,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:49,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:54:49,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302069442] [2023-12-15 18:54:49,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:49,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:49,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:49,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:49,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:49,104 INFO L87 Difference]: Start difference. First operand 42945 states and 50335 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2023-12-15 18:54:52,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:52,198 INFO L93 Difference]: Finished difference Result 104789 states and 124866 transitions. [2023-12-15 18:54:52,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:52,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 243 [2023-12-15 18:54:52,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:52,267 INFO L225 Difference]: With dead ends: 104789 [2023-12-15 18:54:52,267 INFO L226 Difference]: Without dead ends: 62632 [2023-12-15 18:54:52,279 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 [2023-12-15 18:54:52,280 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 824 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:52,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 926 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 18:54:52,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62632 states. [2023-12-15 18:54:52,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62632 to 60260. [2023-12-15 18:54:52,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60260 states, 60259 states have (on average 1.1630959690668614) internal successors, (70087), 60259 states have internal predecessors, (70087), 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) [2023-12-15 18:54:52,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60260 states to 60260 states and 70087 transitions. [2023-12-15 18:54:52,872 INFO L78 Accepts]: Start accepts. Automaton has 60260 states and 70087 transitions. Word has length 243 [2023-12-15 18:54:52,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:52,873 INFO L495 AbstractCegarLoop]: Abstraction has 60260 states and 70087 transitions. [2023-12-15 18:54:52,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2023-12-15 18:54:52,873 INFO L276 IsEmpty]: Start isEmpty. Operand 60260 states and 70087 transitions. [2023-12-15 18:54:52,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-15 18:54:52,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:52,876 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:52,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:54:52,876 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:52,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:52,877 INFO L85 PathProgramCache]: Analyzing trace with hash -711991981, now seen corresponding path program 1 times [2023-12-15 18:54:52,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:52,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147000186] [2023-12-15 18:54:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:52,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 29 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:53,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:53,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147000186] [2023-12-15 18:54:53,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147000186] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:54:53,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888120112] [2023-12-15 18:54:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:53,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:54:53,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:54:53,898 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:54:53,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:54:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:54,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:54:54,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:54:54,091 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-15 18:54:54,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:54:54,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888120112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:54,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:54:54,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-15 18:54:54,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621004060] [2023-12-15 18:54:54,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:54,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:54,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:54,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:54,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:54:54,093 INFO L87 Difference]: Start difference. First operand 60260 states and 70087 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-12-15 18:54:56,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:56,974 INFO L93 Difference]: Finished difference Result 119730 states and 139380 transitions. [2023-12-15 18:54:56,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:56,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 257 [2023-12-15 18:54:56,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:57,036 INFO L225 Difference]: With dead ends: 119730 [2023-12-15 18:54:57,036 INFO L226 Difference]: Without dead ends: 60258 [2023-12-15 18:54:57,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:54:57,081 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 1189 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:57,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 1435 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 18:54:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60258 states. [2023-12-15 18:54:57,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60258 to 60257. [2023-12-15 18:54:57,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60257 states, 60256 states have (on average 1.131820897503983) internal successors, (68199), 60256 states have internal predecessors, (68199), 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) [2023-12-15 18:54:57,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60257 states to 60257 states and 68199 transitions. [2023-12-15 18:54:57,715 INFO L78 Accepts]: Start accepts. Automaton has 60257 states and 68199 transitions. Word has length 257 [2023-12-15 18:54:57,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:57,715 INFO L495 AbstractCegarLoop]: Abstraction has 60257 states and 68199 transitions. [2023-12-15 18:54:57,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-12-15 18:54:57,715 INFO L276 IsEmpty]: Start isEmpty. Operand 60257 states and 68199 transitions. [2023-12-15 18:54:57,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-12-15 18:54:57,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:57,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:57,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 18:54:57,923 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,SelfDestructingSolverStorable10 [2023-12-15 18:54:57,923 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:57,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:57,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1287337128, now seen corresponding path program 1 times [2023-12-15 18:54:57,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:57,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472455081] [2023-12-15 18:54:57,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:57,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 158 proven. 113 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-15 18:54:59,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:59,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472455081] [2023-12-15 18:54:59,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472455081] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:54:59,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861897286] [2023-12-15 18:54:59,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:59,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:54:59,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:54:59,086 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:54:59,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:54:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:59,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:54:59,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:54:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-15 18:54:59,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:54:59,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861897286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:59,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:54:59,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-15 18:54:59,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501578563] [2023-12-15 18:54:59,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:59,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:59,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:59,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:59,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:54:59,261 INFO L87 Difference]: Start difference. First operand 60257 states and 68199 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2023-12-15 18:55:02,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:55:02,206 INFO L93 Difference]: Finished difference Result 119715 states and 135595 transitions. [2023-12-15 18:55:02,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:55:02,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 322 [2023-12-15 18:55:02,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:55:02,272 INFO L225 Difference]: With dead ends: 119715 [2023-12-15 18:55:02,272 INFO L226 Difference]: Without dead ends: 60246 [2023-12-15 18:55:02,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:55:02,293 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 1072 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:55:02,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 814 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:55:02,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60246 states. [2023-12-15 18:55:02,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60246 to 60243. [2023-12-15 18:55:02,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60243 states, 60242 states have (on average 1.0953155605723581) internal successors, (65984), 60242 states have internal predecessors, (65984), 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) [2023-12-15 18:55:02,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60243 states to 60243 states and 65984 transitions. [2023-12-15 18:55:02,962 INFO L78 Accepts]: Start accepts. Automaton has 60243 states and 65984 transitions. Word has length 322 [2023-12-15 18:55:02,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:55:02,976 INFO L495 AbstractCegarLoop]: Abstraction has 60243 states and 65984 transitions. [2023-12-15 18:55:02,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2023-12-15 18:55:02,976 INFO L276 IsEmpty]: Start isEmpty. Operand 60243 states and 65984 transitions. [2023-12-15 18:55:02,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-12-15 18:55:02,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:55:02,984 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:55:03,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:55:03,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 18:55:03,185 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:55:03,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:55:03,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1022580295, now seen corresponding path program 1 times [2023-12-15 18:55:03,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:55:03,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400331037] [2023-12-15 18:55:03,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:55:03,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:55:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:55:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-15 18:55:03,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:55:03,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400331037] [2023-12-15 18:55:03,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400331037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:55:03,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:55:03,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:55:03,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142529109] [2023-12-15 18:55:03,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:55:03,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:55:03,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:55:03,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:55:03,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:55:03,575 INFO L87 Difference]: Start difference. First operand 60243 states and 65984 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 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) [2023-12-15 18:55:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:55:09,909 INFO L93 Difference]: Finished difference Result 158471 states and 174231 transitions. [2023-12-15 18:55:09,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:55:09,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 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 364 [2023-12-15 18:55:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:55:10,012 INFO L225 Difference]: With dead ends: 158471 [2023-12-15 18:55:10,012 INFO L226 Difference]: Without dead ends: 99016 [2023-12-15 18:55:10,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:55:10,034 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 1710 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 6034 mSolverCounterSat, 1075 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 7109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1075 IncrementalHoareTripleChecker+Valid, 6034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:55:10,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 795 Invalid, 7109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1075 Valid, 6034 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-15 18:55:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99016 states. [2023-12-15 18:55:10,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99016 to 75998. [2023-12-15 18:55:10,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75998 states, 75997 states have (on average 1.0875429293261576) internal successors, (82650), 75997 states have internal predecessors, (82650), 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) [2023-12-15 18:55:10,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75998 states to 75998 states and 82650 transitions. [2023-12-15 18:55:10,838 INFO L78 Accepts]: Start accepts. Automaton has 75998 states and 82650 transitions. Word has length 364 [2023-12-15 18:55:10,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:55:10,838 INFO L495 AbstractCegarLoop]: Abstraction has 75998 states and 82650 transitions. [2023-12-15 18:55:10,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 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) [2023-12-15 18:55:10,839 INFO L276 IsEmpty]: Start isEmpty. Operand 75998 states and 82650 transitions. [2023-12-15 18:55:10,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-12-15 18:55:10,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:55:10,842 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:55:10,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:55:10,843 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:55:10,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:55:10,843 INFO L85 PathProgramCache]: Analyzing trace with hash 433342640, now seen corresponding path program 1 times [2023-12-15 18:55:10,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:55:10,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395764303] [2023-12-15 18:55:10,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:55:10,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:55:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:55:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-15 18:55:11,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:55:11,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395764303] [2023-12-15 18:55:11,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395764303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:55:11,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:55:11,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:55:11,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884583872] [2023-12-15 18:55:11,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:55:11,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:55:11,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:55:11,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:55:11,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:11,259 INFO L87 Difference]: Start difference. First operand 75998 states and 82650 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2023-12-15 18:55:14,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:55:14,806 INFO L93 Difference]: Finished difference Result 175616 states and 192334 transitions. [2023-12-15 18:55:14,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:55:14,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 377 [2023-12-15 18:55:14,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:55:14,923 INFO L225 Difference]: With dead ends: 175616 [2023-12-15 18:55:14,923 INFO L226 Difference]: Without dead ends: 100406 [2023-12-15 18:55:14,954 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 [2023-12-15 18:55:14,954 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 812 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 3351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:55:14,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 891 Invalid, 3351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 18:55:15,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100406 states. [2023-12-15 18:55:15,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100406 to 98814. [2023-12-15 18:55:16,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98814 states, 98813 states have (on average 1.090686448139415) internal successors, (107774), 98813 states have internal predecessors, (107774), 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) [2023-12-15 18:55:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98814 states to 98814 states and 107774 transitions. [2023-12-15 18:55:16,194 INFO L78 Accepts]: Start accepts. Automaton has 98814 states and 107774 transitions. Word has length 377 [2023-12-15 18:55:16,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:55:16,195 INFO L495 AbstractCegarLoop]: Abstraction has 98814 states and 107774 transitions. [2023-12-15 18:55:16,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2023-12-15 18:55:16,195 INFO L276 IsEmpty]: Start isEmpty. Operand 98814 states and 107774 transitions. [2023-12-15 18:55:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-15 18:55:16,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:55:16,199 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:55:16,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:55:16,200 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:55:16,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:55:16,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1029502847, now seen corresponding path program 1 times [2023-12-15 18:55:16,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:55:16,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886588783] [2023-12-15 18:55:16,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:55:16,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:55:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-15 18:55:16,546 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:55:16,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:55:16,549 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Termination requested (timeout or resource limit) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:152) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:869) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:793) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-15 18:55:16,552 INFO L158 Benchmark]: Toolchain (without parser) took 63965.02ms. Allocated memory was 266.3MB in the beginning and 4.2GB in the end (delta: 3.9GB). Free memory was 205.2MB in the beginning and 2.6GB in the end (delta: -2.4GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-15 18:55:16,552 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 221.2MB. Free memory is still 171.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:55:16,553 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1359.96ms. Allocated memory is still 266.3MB. Free memory was 205.2MB in the beginning and 131.1MB in the end (delta: 74.0MB). Peak memory consumption was 94.1MB. Max. memory is 8.0GB. [2023-12-15 18:55:16,553 INFO L158 Benchmark]: Boogie Procedure Inliner took 540.56ms. Allocated memory was 266.3MB in the beginning and 392.2MB in the end (delta: 125.8MB). Free memory was 131.1MB in the beginning and 257.7MB in the end (delta: -126.5MB). Peak memory consumption was 109.4MB. Max. memory is 8.0GB. [2023-12-15 18:55:16,553 INFO L158 Benchmark]: Boogie Preprocessor took 578.27ms. Allocated memory was 392.2MB in the beginning and 784.3MB in the end (delta: 392.2MB). Free memory was 257.7MB in the beginning and 611.7MB in the end (delta: -354.0MB). Peak memory consumption was 112.2MB. Max. memory is 8.0GB. [2023-12-15 18:55:16,553 INFO L158 Benchmark]: RCFGBuilder took 3556.73ms. Allocated memory is still 784.3MB. Free memory was 611.1MB in the beginning and 320.1MB in the end (delta: 291.0MB). Peak memory consumption was 290.0MB. Max. memory is 8.0GB. [2023-12-15 18:55:16,554 INFO L158 Benchmark]: TraceAbstraction took 57919.07ms. Allocated memory was 784.3MB in the beginning and 4.2GB in the end (delta: 3.4GB). Free memory was 319.6MB in the beginning and 2.6GB in the end (delta: -2.2GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-15 18:55:16,555 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 221.2MB. Free memory is still 171.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1359.96ms. Allocated memory is still 266.3MB. Free memory was 205.2MB in the beginning and 131.1MB in the end (delta: 74.0MB). Peak memory consumption was 94.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 540.56ms. Allocated memory was 266.3MB in the beginning and 392.2MB in the end (delta: 125.8MB). Free memory was 131.1MB in the beginning and 257.7MB in the end (delta: -126.5MB). Peak memory consumption was 109.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 578.27ms. Allocated memory was 392.2MB in the beginning and 784.3MB in the end (delta: 392.2MB). Free memory was 257.7MB in the beginning and 611.7MB in the end (delta: -354.0MB). Peak memory consumption was 112.2MB. Max. memory is 8.0GB. * RCFGBuilder took 3556.73ms. Allocated memory is still 784.3MB. Free memory was 611.1MB in the beginning and 320.1MB in the end (delta: 291.0MB). Peak memory consumption was 290.0MB. Max. memory is 8.0GB. * TraceAbstraction took 57919.07ms. Allocated memory was 784.3MB in the beginning and 4.2GB in the end (delta: 3.4GB). Free memory was 319.6MB in the beginning and 2.6GB in the end (delta: -2.2GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Termination requested (timeout or resource limit) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Termination requested (timeout or resource limit): de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown