/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:13:38,885 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:13:38,969 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:13:38,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:13:38,973 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:13:39,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:13:39,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:13:39,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:13:39,006 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:13:39,010 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:13:39,010 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:13:39,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:13:39,011 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:13:39,012 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:13:39,013 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:13:39,013 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:13:39,013 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:13:39,013 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:13:39,013 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:13:39,014 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:13:39,015 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:13:39,015 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:13:39,015 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:13:39,015 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:13:39,015 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:13:39,016 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:13:39,016 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:13:39,016 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:13:39,017 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:13:39,017 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:13:39,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:13:39,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:13:39,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:13:39,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:13:39,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:13:39,018 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:13:39,019 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:13:39,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:13:39,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:13:39,019 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:13:39,019 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:13:39,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:13:39,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:13:39,020 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:13:39,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:13:39,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:13:39,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:13:39,253 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:13:39,253 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:13:39,254 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2023-12-15 23:13:40,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:13:40,573 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:13:40,573 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2023-12-15 23:13:40,584 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff62ba6b/4ae1de80a718457f85e64051eb9ec8ac/FLAG54c3f0a19 [2023-12-15 23:13:40,594 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff62ba6b/4ae1de80a718457f85e64051eb9ec8ac [2023-12-15 23:13:40,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:13:40,597 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:13:40,598 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:13:40,598 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:13:40,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:13:40,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:13:40" (1/1) ... [2023-12-15 23:13:40,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d9fb9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:40, skipping insertion in model container [2023-12-15 23:13:40,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:13:40" (1/1) ... [2023-12-15 23:13:40,645 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:13:40,809 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c[9392,9405] [2023-12-15 23:13:40,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:13:40,827 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:13:40,879 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c[9392,9405] [2023-12-15 23:13:40,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:13:40,907 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:13:40,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:40 WrapperNode [2023-12-15 23:13:40,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:13:40,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:13:40,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:13:40,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:13:40,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:40" (1/1) ... [2023-12-15 23:13:40,938 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:40" (1/1) ... [2023-12-15 23:13:40,977 INFO L138 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 307 [2023-12-15 23:13:40,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:13:40,978 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:13:40,978 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:13:40,979 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:13:40,993 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:40" (1/1) ... [2023-12-15 23:13:40,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:40" (1/1) ... [2023-12-15 23:13:40,996 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:40" (1/1) ... [2023-12-15 23:13:41,018 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 23:13:41,018 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:40" (1/1) ... [2023-12-15 23:13:41,019 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:40" (1/1) ... [2023-12-15 23:13:41,025 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:40" (1/1) ... [2023-12-15 23:13:41,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:40" (1/1) ... [2023-12-15 23:13:41,030 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:40" (1/1) ... [2023-12-15 23:13:41,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:40" (1/1) ... [2023-12-15 23:13:41,035 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:13:41,035 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:13:41,035 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:13:41,036 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:13:41,036 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:40" (1/1) ... [2023-12-15 23:13:41,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:13:41,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:13:41,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 23:13:41,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 23:13:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:13:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:13:41,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:13:41,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:13:41,213 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:13:41,215 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:13:41,582 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:13:41,613 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:13:41,613 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 23:13:41,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:13:41 BoogieIcfgContainer [2023-12-15 23:13:41,613 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:13:41,615 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:13:41,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:13:41,620 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:13:41,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:13:40" (1/3) ... [2023-12-15 23:13:41,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635e2994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:13:41, skipping insertion in model container [2023-12-15 23:13:41,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:40" (2/3) ... [2023-12-15 23:13:41,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635e2994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:13:41, skipping insertion in model container [2023-12-15 23:13:41,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:13:41" (3/3) ... [2023-12-15 23:13:41,622 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2023-12-15 23:13:41,639 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:13:41,640 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:13:41,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:13:41,694 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;@770c4dbb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:13:41,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:13:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 77 states have (on average 1.7792207792207793) internal successors, (137), 78 states have internal predecessors, (137), 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 23:13:41,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-15 23:13:41,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:41,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:41,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:41,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:41,716 INFO L85 PathProgramCache]: Analyzing trace with hash -408434164, now seen corresponding path program 1 times [2023-12-15 23:13:41,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:41,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285791506] [2023-12-15 23:13:41,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:41,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:41,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:41,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:41,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285791506] [2023-12-15 23:13:41,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285791506] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:41,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:41,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 23:13:41,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665532943] [2023-12-15 23:13:41,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:41,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 23:13:41,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:41,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 23:13:41,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 23:13:41,961 INFO L87 Difference]: Start difference. First operand has 79 states, 77 states have (on average 1.7792207792207793) internal successors, (137), 78 states have internal predecessors, (137), 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 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 23:13:42,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:42,043 INFO L93 Difference]: Finished difference Result 131 states and 222 transitions. [2023-12-15 23:13:42,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 23:13:42,046 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 26 [2023-12-15 23:13:42,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:42,057 INFO L225 Difference]: With dead ends: 131 [2023-12-15 23:13:42,057 INFO L226 Difference]: Without dead ends: 77 [2023-12-15 23:13:42,060 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 23:13:42,063 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:42,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:42,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-15 23:13:42,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-12-15 23:13:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.736842105263158) internal successors, (132), 76 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 23:13:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 132 transitions. [2023-12-15 23:13:42,100 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 132 transitions. Word has length 26 [2023-12-15 23:13:42,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:42,100 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 132 transitions. [2023-12-15 23:13:42,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 23:13:42,101 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 132 transitions. [2023-12-15 23:13:42,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-15 23:13:42,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:42,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:42,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:13:42,103 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:42,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:42,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2081094798, now seen corresponding path program 1 times [2023-12-15 23:13:42,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:42,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113842376] [2023-12-15 23:13:42,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:42,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:42,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:42,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113842376] [2023-12-15 23:13:42,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113842376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:42,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:42,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:13:42,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167960436] [2023-12-15 23:13:42,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:42,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:13:42,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:42,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:13:42,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:13:42,273 INFO L87 Difference]: Start difference. First operand 77 states and 132 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 23:13:42,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:42,354 INFO L93 Difference]: Finished difference Result 178 states and 295 transitions. [2023-12-15 23:13:42,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:13:42,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2023-12-15 23:13:42,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:42,356 INFO L225 Difference]: With dead ends: 178 [2023-12-15 23:13:42,356 INFO L226 Difference]: Without dead ends: 126 [2023-12-15 23:13:42,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:13:42,361 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 79 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:42,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 354 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:13:42,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-15 23:13:42,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 77. [2023-12-15 23:13:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 76 states have internal predecessors, (108), 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 23:13:42,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions. [2023-12-15 23:13:42,369 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 108 transitions. Word has length 26 [2023-12-15 23:13:42,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:42,369 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 108 transitions. [2023-12-15 23:13:42,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 23:13:42,369 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 108 transitions. [2023-12-15 23:13:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-15 23:13:42,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:42,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:42,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:13:42,371 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:42,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:42,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1094162009, now seen corresponding path program 1 times [2023-12-15 23:13:42,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:42,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257164245] [2023-12-15 23:13:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:42,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:42,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:42,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:42,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257164245] [2023-12-15 23:13:42,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257164245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:42,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:42,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:42,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62079013] [2023-12-15 23:13:42,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:42,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:42,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:42,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:42,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:42,484 INFO L87 Difference]: Start difference. First operand 77 states and 108 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 23:13:42,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:42,519 INFO L93 Difference]: Finished difference Result 167 states and 254 transitions. [2023-12-15 23:13:42,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:42,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2023-12-15 23:13:42,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:42,523 INFO L225 Difference]: With dead ends: 167 [2023-12-15 23:13:42,523 INFO L226 Difference]: Without dead ends: 118 [2023-12-15 23:13:42,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:42,524 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 64 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:42,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 229 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:42,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-15 23:13:42,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2023-12-15 23:13:42,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.4956521739130435) internal successors, (172), 115 states have internal predecessors, (172), 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 23:13:42,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 172 transitions. [2023-12-15 23:13:42,537 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 172 transitions. Word has length 49 [2023-12-15 23:13:42,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:42,538 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 172 transitions. [2023-12-15 23:13:42,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 23:13:42,538 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 172 transitions. [2023-12-15 23:13:42,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-15 23:13:42,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:42,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:42,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:13:42,540 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:42,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:42,542 INFO L85 PathProgramCache]: Analyzing trace with hash -114750088, now seen corresponding path program 1 times [2023-12-15 23:13:42,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:42,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71513936] [2023-12-15 23:13:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:42,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:42,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:42,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:42,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71513936] [2023-12-15 23:13:42,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71513936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:42,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:42,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:42,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937039895] [2023-12-15 23:13:42,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:42,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:42,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:42,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:42,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:42,676 INFO L87 Difference]: Start difference. First operand 116 states and 172 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 23:13:42,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:42,704 INFO L93 Difference]: Finished difference Result 276 states and 432 transitions. [2023-12-15 23:13:42,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:42,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2023-12-15 23:13:42,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:42,709 INFO L225 Difference]: With dead ends: 276 [2023-12-15 23:13:42,709 INFO L226 Difference]: Without dead ends: 188 [2023-12-15 23:13:42,710 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 23:13:42,711 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 60 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:42,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 226 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:42,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-15 23:13:42,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2023-12-15 23:13:42,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.5405405405405406) internal successors, (285), 185 states have internal predecessors, (285), 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 23:13:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 285 transitions. [2023-12-15 23:13:42,734 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 285 transitions. Word has length 49 [2023-12-15 23:13:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:42,734 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 285 transitions. [2023-12-15 23:13:42,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 23:13:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 285 transitions. [2023-12-15 23:13:42,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-15 23:13:42,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:42,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:42,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:13:42,735 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:42,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:42,736 INFO L85 PathProgramCache]: Analyzing trace with hash 796453911, now seen corresponding path program 1 times [2023-12-15 23:13:42,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:42,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4478813] [2023-12-15 23:13:42,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:42,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:42,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:42,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4478813] [2023-12-15 23:13:42,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4478813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:42,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:42,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 23:13:42,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169285353] [2023-12-15 23:13:42,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:42,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 23:13:42,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:42,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 23:13:42,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:13:42,856 INFO L87 Difference]: Start difference. First operand 186 states and 285 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 23:13:42,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:42,990 INFO L93 Difference]: Finished difference Result 976 states and 1570 transitions. [2023-12-15 23:13:42,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:13:42,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 49 [2023-12-15 23:13:42,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:42,996 INFO L225 Difference]: With dead ends: 976 [2023-12-15 23:13:42,997 INFO L226 Difference]: Without dead ends: 818 [2023-12-15 23:13:43,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:13:43,004 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 733 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:43,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 660 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:13:43,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-15 23:13:43,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 342. [2023-12-15 23:13:43,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.563049853372434) internal successors, (533), 341 states have internal predecessors, (533), 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 23:13:43,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 533 transitions. [2023-12-15 23:13:43,049 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 533 transitions. Word has length 49 [2023-12-15 23:13:43,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:43,050 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 533 transitions. [2023-12-15 23:13:43,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 23:13:43,050 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 533 transitions. [2023-12-15 23:13:43,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-15 23:13:43,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:43,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:43,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:13:43,057 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:43,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:43,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1092763391, now seen corresponding path program 1 times [2023-12-15 23:13:43,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:43,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957620043] [2023-12-15 23:13:43,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:43,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:43,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:43,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957620043] [2023-12-15 23:13:43,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957620043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:43,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:43,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 23:13:43,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412499993] [2023-12-15 23:13:43,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:43,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 23:13:43,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:43,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 23:13:43,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:13:43,317 INFO L87 Difference]: Start difference. First operand 342 states and 533 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 23:13:43,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:43,349 INFO L93 Difference]: Finished difference Result 368 states and 566 transitions. [2023-12-15 23:13:43,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:13:43,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 50 [2023-12-15 23:13:43,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:43,352 INFO L225 Difference]: With dead ends: 368 [2023-12-15 23:13:43,352 INFO L226 Difference]: Without dead ends: 366 [2023-12-15 23:13:43,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:13:43,353 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 2 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:43,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 504 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:43,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-12-15 23:13:43,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 358. [2023-12-15 23:13:43,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.5378151260504203) internal successors, (549), 357 states have internal predecessors, (549), 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 23:13:43,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 549 transitions. [2023-12-15 23:13:43,368 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 549 transitions. Word has length 50 [2023-12-15 23:13:43,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:43,369 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 549 transitions. [2023-12-15 23:13:43,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 23:13:43,369 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 549 transitions. [2023-12-15 23:13:43,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-15 23:13:43,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:43,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:43,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:13:43,370 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:43,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:43,370 INFO L85 PathProgramCache]: Analyzing trace with hash 485103743, now seen corresponding path program 1 times [2023-12-15 23:13:43,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:43,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132557440] [2023-12-15 23:13:43,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:43,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:43,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:43,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132557440] [2023-12-15 23:13:43,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132557440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:43,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:43,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:43,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808829441] [2023-12-15 23:13:43,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:43,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:43,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:43,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:43,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:43,430 INFO L87 Difference]: Start difference. First operand 358 states and 549 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 23:13:43,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:43,453 INFO L93 Difference]: Finished difference Result 962 states and 1495 transitions. [2023-12-15 23:13:43,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:43,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2023-12-15 23:13:43,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:43,460 INFO L225 Difference]: With dead ends: 962 [2023-12-15 23:13:43,460 INFO L226 Difference]: Without dead ends: 632 [2023-12-15 23:13:43,461 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 23:13:43,461 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 49 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:43,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 181 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:43,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-12-15 23:13:43,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 630. [2023-12-15 23:13:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 1.534181240063593) internal successors, (965), 629 states have internal predecessors, (965), 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 23:13:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 965 transitions. [2023-12-15 23:13:43,498 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 965 transitions. Word has length 51 [2023-12-15 23:13:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:43,500 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 965 transitions. [2023-12-15 23:13:43,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 23:13:43,500 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 965 transitions. [2023-12-15 23:13:43,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-15 23:13:43,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:43,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:43,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:13:43,502 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:43,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:43,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1884075168, now seen corresponding path program 1 times [2023-12-15 23:13:43,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:43,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675822779] [2023-12-15 23:13:43,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:43,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:43,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:43,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675822779] [2023-12-15 23:13:43,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675822779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:43,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:43,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:43,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882465487] [2023-12-15 23:13:43,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:43,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:43,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:43,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:43,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:43,564 INFO L87 Difference]: Start difference. First operand 630 states and 965 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 23:13:43,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:43,599 INFO L93 Difference]: Finished difference Result 1228 states and 1898 transitions. [2023-12-15 23:13:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:43,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2023-12-15 23:13:43,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:43,604 INFO L225 Difference]: With dead ends: 1228 [2023-12-15 23:13:43,604 INFO L226 Difference]: Without dead ends: 898 [2023-12-15 23:13:43,605 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 23:13:43,607 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 68 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:43,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 239 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:43,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2023-12-15 23:13:43,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 896. [2023-12-15 23:13:43,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 1.5273743016759778) internal successors, (1367), 895 states have internal predecessors, (1367), 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 23:13:43,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1367 transitions. [2023-12-15 23:13:43,633 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1367 transitions. Word has length 51 [2023-12-15 23:13:43,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:43,633 INFO L495 AbstractCegarLoop]: Abstraction has 896 states and 1367 transitions. [2023-12-15 23:13:43,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 23:13:43,634 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1367 transitions. [2023-12-15 23:13:43,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-15 23:13:43,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:43,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:43,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:13:43,636 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:43,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:43,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2119290152, now seen corresponding path program 1 times [2023-12-15 23:13:43,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:43,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314305915] [2023-12-15 23:13:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:43,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:43,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:43,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314305915] [2023-12-15 23:13:43,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314305915] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:43,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:43,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:43,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138916948] [2023-12-15 23:13:43,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:43,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:43,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:43,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:43,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:43,702 INFO L87 Difference]: Start difference. First operand 896 states and 1367 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 23:13:43,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:43,746 INFO L93 Difference]: Finished difference Result 2436 states and 3705 transitions. [2023-12-15 23:13:43,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:43,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2023-12-15 23:13:43,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:43,764 INFO L225 Difference]: With dead ends: 2436 [2023-12-15 23:13:43,765 INFO L226 Difference]: Without dead ends: 1570 [2023-12-15 23:13:43,766 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 23:13:43,770 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 56 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:43,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 233 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:43,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2023-12-15 23:13:43,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1568. [2023-12-15 23:13:43,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1567 states have (on average 1.4952137843012125) internal successors, (2343), 1567 states have internal predecessors, (2343), 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 23:13:43,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2343 transitions. [2023-12-15 23:13:43,822 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2343 transitions. Word has length 52 [2023-12-15 23:13:43,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:43,823 INFO L495 AbstractCegarLoop]: Abstraction has 1568 states and 2343 transitions. [2023-12-15 23:13:43,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 23:13:43,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2343 transitions. [2023-12-15 23:13:43,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-15 23:13:43,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:43,824 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:13:43,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:13:43,825 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:43,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:43,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2124847998, now seen corresponding path program 1 times [2023-12-15 23:13:43,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:43,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96747618] [2023-12-15 23:13:43,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:43,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:43,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:43,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96747618] [2023-12-15 23:13:43,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96747618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:43,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:43,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:43,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994448002] [2023-12-15 23:13:43,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:43,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:43,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:43,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:43,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:43,946 INFO L87 Difference]: Start difference. First operand 1568 states and 2343 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 23:13:43,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:43,990 INFO L93 Difference]: Finished difference Result 3108 states and 4657 transitions. [2023-12-15 23:13:43,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:43,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2023-12-15 23:13:43,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:43,996 INFO L225 Difference]: With dead ends: 3108 [2023-12-15 23:13:43,996 INFO L226 Difference]: Without dead ends: 1570 [2023-12-15 23:13:43,998 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 23:13:43,999 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 54 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:44,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 224 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:44,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2023-12-15 23:13:44,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1568. [2023-12-15 23:13:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1567 states have (on average 1.4798978940650924) internal successors, (2319), 1567 states have internal predecessors, (2319), 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 23:13:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2319 transitions. [2023-12-15 23:13:44,047 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2319 transitions. Word has length 73 [2023-12-15 23:13:44,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:44,048 INFO L495 AbstractCegarLoop]: Abstraction has 1568 states and 2319 transitions. [2023-12-15 23:13:44,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 23:13:44,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2319 transitions. [2023-12-15 23:13:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-15 23:13:44,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:44,050 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:13:44,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:13:44,050 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:44,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:44,051 INFO L85 PathProgramCache]: Analyzing trace with hash -172725725, now seen corresponding path program 1 times [2023-12-15 23:13:44,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:44,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444290389] [2023-12-15 23:13:44,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:44,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:46,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:46,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444290389] [2023-12-15 23:13:46,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444290389] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:13:46,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942245308] [2023-12-15 23:13:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:46,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:13:46,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:13:46,020 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:13:46,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 23:13:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:46,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-15 23:13:46,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:13:46,324 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:13:46,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:13:46,733 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:13:46,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942245308] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:13:46,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:13:46,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 6] total 21 [2023-12-15 23:13:46,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190905190] [2023-12-15 23:13:46,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:13:46,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-15 23:13:46,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:46,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-15 23:13:46,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-12-15 23:13:46,736 INFO L87 Difference]: Start difference. First operand 1568 states and 2319 transitions. Second operand has 21 states, 21 states have (on average 9.904761904761905) internal successors, (208), 21 states have internal predecessors, (208), 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 23:13:51,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:51,358 INFO L93 Difference]: Finished difference Result 15206 states and 22042 transitions. [2023-12-15 23:13:51,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-12-15 23:13:51,359 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.904761904761905) internal successors, (208), 21 states have internal predecessors, (208), 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 73 [2023-12-15 23:13:51,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:51,407 INFO L225 Difference]: With dead ends: 15206 [2023-12-15 23:13:51,408 INFO L226 Difference]: Without dead ends: 14148 [2023-12-15 23:13:51,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3906 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1715, Invalid=8997, Unknown=0, NotChecked=0, Total=10712 [2023-12-15 23:13:51,416 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 5239 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5239 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:51,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5239 Valid, 1777 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 23:13:51,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14148 states. [2023-12-15 23:13:51,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14148 to 9744. [2023-12-15 23:13:51,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9744 states, 9743 states have (on average 1.4680283280303807) internal successors, (14303), 9743 states have internal predecessors, (14303), 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 23:13:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9744 states to 9744 states and 14303 transitions. [2023-12-15 23:13:51,753 INFO L78 Accepts]: Start accepts. Automaton has 9744 states and 14303 transitions. Word has length 73 [2023-12-15 23:13:51,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:51,753 INFO L495 AbstractCegarLoop]: Abstraction has 9744 states and 14303 transitions. [2023-12-15 23:13:51,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.904761904761905) internal successors, (208), 21 states have internal predecessors, (208), 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 23:13:51,753 INFO L276 IsEmpty]: Start isEmpty. Operand 9744 states and 14303 transitions. [2023-12-15 23:13:51,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 23:13:51,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:51,755 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:51,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 23:13:51,960 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 23:13:51,961 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:51,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:51,961 INFO L85 PathProgramCache]: Analyzing trace with hash 528187530, now seen corresponding path program 1 times [2023-12-15 23:13:51,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:51,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213909622] [2023-12-15 23:13:51,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:51,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 23:13:52,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:52,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213909622] [2023-12-15 23:13:52,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213909622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:52,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:52,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 23:13:52,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950612257] [2023-12-15 23:13:52,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:52,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 23:13:52,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:52,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 23:13:52,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:13:52,069 INFO L87 Difference]: Start difference. First operand 9744 states and 14303 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 23:13:52,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:52,487 INFO L93 Difference]: Finished difference Result 28906 states and 42739 transitions. [2023-12-15 23:13:52,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:13:52,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 74 [2023-12-15 23:13:52,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:52,555 INFO L225 Difference]: With dead ends: 28906 [2023-12-15 23:13:52,556 INFO L226 Difference]: Without dead ends: 23894 [2023-12-15 23:13:52,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:13:52,570 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 455 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:52,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 659 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:52,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23894 states. [2023-12-15 23:13:53,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23894 to 14514. [2023-12-15 23:13:53,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14514 states, 14513 states have (on average 1.4630331426996486) internal successors, (21233), 14513 states have internal predecessors, (21233), 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 23:13:53,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14514 states to 14514 states and 21233 transitions. [2023-12-15 23:13:53,143 INFO L78 Accepts]: Start accepts. Automaton has 14514 states and 21233 transitions. Word has length 74 [2023-12-15 23:13:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:53,144 INFO L495 AbstractCegarLoop]: Abstraction has 14514 states and 21233 transitions. [2023-12-15 23:13:53,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 23:13:53,145 INFO L276 IsEmpty]: Start isEmpty. Operand 14514 states and 21233 transitions. [2023-12-15 23:13:53,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 23:13:53,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:53,146 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:53,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:13:53,147 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:53,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:53,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1273743992, now seen corresponding path program 1 times [2023-12-15 23:13:53,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:53,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009625122] [2023-12-15 23:13:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:53,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 23:13:53,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:53,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009625122] [2023-12-15 23:13:53,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009625122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:53,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:53,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 23:13:53,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676338820] [2023-12-15 23:13:53,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:53,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 23:13:53,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:53,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 23:13:53,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:13:53,253 INFO L87 Difference]: Start difference. First operand 14514 states and 21233 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:53,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:53,722 INFO L93 Difference]: Finished difference Result 33676 states and 49669 transitions. [2023-12-15 23:13:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:13:53,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-15 23:13:53,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:53,788 INFO L225 Difference]: With dead ends: 33676 [2023-12-15 23:13:53,789 INFO L226 Difference]: Without dead ends: 28664 [2023-12-15 23:13:53,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:13:53,805 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 496 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:53,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 585 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:53,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28664 states. [2023-12-15 23:13:54,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28664 to 19284. [2023-12-15 23:13:54,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19284 states, 19283 states have (on average 1.4605092568583726) internal successors, (28163), 19283 states have internal predecessors, (28163), 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 23:13:54,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19284 states to 19284 states and 28163 transitions. [2023-12-15 23:13:54,420 INFO L78 Accepts]: Start accepts. Automaton has 19284 states and 28163 transitions. Word has length 74 [2023-12-15 23:13:54,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:54,420 INFO L495 AbstractCegarLoop]: Abstraction has 19284 states and 28163 transitions. [2023-12-15 23:13:54,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:54,420 INFO L276 IsEmpty]: Start isEmpty. Operand 19284 states and 28163 transitions. [2023-12-15 23:13:54,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 23:13:54,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:54,422 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:54,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:13:54,422 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:54,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:54,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1898243706, now seen corresponding path program 1 times [2023-12-15 23:13:54,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:54,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494171345] [2023-12-15 23:13:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:54,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 23:13:54,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:54,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494171345] [2023-12-15 23:13:54,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494171345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:54,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:54,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 23:13:54,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354996711] [2023-12-15 23:13:54,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:54,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 23:13:54,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:54,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 23:13:54,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:13:54,515 INFO L87 Difference]: Start difference. First operand 19284 states and 28163 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:55,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:55,112 INFO L93 Difference]: Finished difference Result 38446 states and 56599 transitions. [2023-12-15 23:13:55,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:13:55,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-15 23:13:55,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:55,173 INFO L225 Difference]: With dead ends: 38446 [2023-12-15 23:13:55,174 INFO L226 Difference]: Without dead ends: 33434 [2023-12-15 23:13:55,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:13:55,187 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 464 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:55,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 657 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:55,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33434 states. [2023-12-15 23:13:55,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33434 to 24054. [2023-12-15 23:13:55,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24054 states, 24053 states have (on average 1.4589864050222425) internal successors, (35093), 24053 states have internal predecessors, (35093), 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 23:13:55,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24054 states to 24054 states and 35093 transitions. [2023-12-15 23:13:55,961 INFO L78 Accepts]: Start accepts. Automaton has 24054 states and 35093 transitions. Word has length 74 [2023-12-15 23:13:55,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:55,961 INFO L495 AbstractCegarLoop]: Abstraction has 24054 states and 35093 transitions. [2023-12-15 23:13:55,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:55,961 INFO L276 IsEmpty]: Start isEmpty. Operand 24054 states and 35093 transitions. [2023-12-15 23:13:55,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 23:13:55,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:55,963 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:55,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:13:55,963 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:55,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:55,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1185783157, now seen corresponding path program 1 times [2023-12-15 23:13:55,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:55,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853681220] [2023-12-15 23:13:55,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:55,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:56,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:13:56,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:56,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853681220] [2023-12-15 23:13:56,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853681220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:56,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:56,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 23:13:56,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874250953] [2023-12-15 23:13:56,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:56,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 23:13:56,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:56,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 23:13:56,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:13:56,065 INFO L87 Difference]: Start difference. First operand 24054 states and 35093 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 23:13:56,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:56,733 INFO L93 Difference]: Finished difference Result 41572 states and 61053 transitions. [2023-12-15 23:13:56,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:13:56,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 74 [2023-12-15 23:13:56,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:56,794 INFO L225 Difference]: With dead ends: 41572 [2023-12-15 23:13:56,794 INFO L226 Difference]: Without dead ends: 37592 [2023-12-15 23:13:56,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:13:56,810 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 451 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:56,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 729 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:56,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37592 states. [2023-12-15 23:13:57,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37592 to 28212. [2023-12-15 23:13:57,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28212 states, 28211 states have (on average 1.4572329942221118) internal successors, (41110), 28211 states have internal predecessors, (41110), 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 23:13:57,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28212 states to 28212 states and 41110 transitions. [2023-12-15 23:13:57,619 INFO L78 Accepts]: Start accepts. Automaton has 28212 states and 41110 transitions. Word has length 74 [2023-12-15 23:13:57,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:57,619 INFO L495 AbstractCegarLoop]: Abstraction has 28212 states and 41110 transitions. [2023-12-15 23:13:57,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 23:13:57,619 INFO L276 IsEmpty]: Start isEmpty. Operand 28212 states and 41110 transitions. [2023-12-15 23:13:57,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-15 23:13:57,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:57,622 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:57,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:13:57,622 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:57,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:57,622 INFO L85 PathProgramCache]: Analyzing trace with hash -927044264, now seen corresponding path program 1 times [2023-12-15 23:13:57,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:57,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759426955] [2023-12-15 23:13:57,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:57,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:57,700 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 23:13:57,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:57,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759426955] [2023-12-15 23:13:57,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759426955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:57,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:57,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:57,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337570535] [2023-12-15 23:13:57,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:57,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:57,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:57,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:57,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:57,702 INFO L87 Difference]: Start difference. First operand 28212 states and 41110 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 23:13:58,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:58,018 INFO L93 Difference]: Finished difference Result 40436 states and 58699 transitions. [2023-12-15 23:13:58,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:58,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2023-12-15 23:13:58,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:58,040 INFO L225 Difference]: With dead ends: 40436 [2023-12-15 23:13:58,041 INFO L226 Difference]: Without dead ends: 12254 [2023-12-15 23:13:58,068 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 23:13:58,068 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 44 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:58,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 217 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:58,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12254 states. [2023-12-15 23:13:58,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12254 to 11952. [2023-12-15 23:13:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11952 states, 11951 states have (on average 1.4283323571249267) internal successors, (17070), 11951 states have internal predecessors, (17070), 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 23:13:58,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11952 states to 11952 states and 17070 transitions. [2023-12-15 23:13:58,507 INFO L78 Accepts]: Start accepts. Automaton has 11952 states and 17070 transitions. Word has length 77 [2023-12-15 23:13:58,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:58,507 INFO L495 AbstractCegarLoop]: Abstraction has 11952 states and 17070 transitions. [2023-12-15 23:13:58,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 23:13:58,507 INFO L276 IsEmpty]: Start isEmpty. Operand 11952 states and 17070 transitions. [2023-12-15 23:13:58,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-15 23:13:58,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:58,513 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:13:58,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:13:58,514 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:58,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:58,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1454634311, now seen corresponding path program 1 times [2023-12-15 23:13:58,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:58,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061269490] [2023-12-15 23:13:58,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:58,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:58,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:58,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061269490] [2023-12-15 23:13:58,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061269490] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:13:58,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156148312] [2023-12-15 23:13:58,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:58,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:13:58,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:13:58,797 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:13:58,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 23:13:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:58,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 23:13:58,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:13:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:59,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:14:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:00,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156148312] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:14:00,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:14:00,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-12-15 23:14:00,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717190443] [2023-12-15 23:14:00,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:14:00,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-15 23:14:00,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:00,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-15 23:14:00,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2023-12-15 23:14:00,508 INFO L87 Difference]: Start difference. First operand 11952 states and 17070 transitions. Second operand has 29 states, 29 states have (on average 7.413793103448276) internal successors, (215), 28 states have internal predecessors, (215), 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 23:14:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:06,579 INFO L93 Difference]: Finished difference Result 100841 states and 141409 transitions. [2023-12-15 23:14:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2023-12-15 23:14:06,580 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.413793103448276) internal successors, (215), 28 states have internal predecessors, (215), 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 77 [2023-12-15 23:14:06,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:06,720 INFO L225 Difference]: With dead ends: 100841 [2023-12-15 23:14:06,720 INFO L226 Difference]: Without dead ends: 88926 [2023-12-15 23:14:06,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10115 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3881, Invalid=23509, Unknown=0, NotChecked=0, Total=27390 [2023-12-15 23:14:06,759 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 6110 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6110 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:06,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6110 Valid, 1725 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 23:14:06,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88926 states. [2023-12-15 23:14:07,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88926 to 28920. [2023-12-15 23:14:07,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28920 states, 28919 states have (on average 1.4308586050693315) internal successors, (41379), 28919 states have internal predecessors, (41379), 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 23:14:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28920 states to 28920 states and 41379 transitions. [2023-12-15 23:14:07,872 INFO L78 Accepts]: Start accepts. Automaton has 28920 states and 41379 transitions. Word has length 77 [2023-12-15 23:14:07,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:07,872 INFO L495 AbstractCegarLoop]: Abstraction has 28920 states and 41379 transitions. [2023-12-15 23:14:07,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.413793103448276) internal successors, (215), 28 states have internal predecessors, (215), 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 23:14:07,873 INFO L276 IsEmpty]: Start isEmpty. Operand 28920 states and 41379 transitions. [2023-12-15 23:14:07,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-15 23:14:07,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:07,876 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:07,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 23:14:08,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 23:14:08,081 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:08,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:08,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1898925238, now seen corresponding path program 1 times [2023-12-15 23:14:08,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:08,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616945716] [2023-12-15 23:14:08,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:08,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:08,159 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 23:14:08,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:08,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616945716] [2023-12-15 23:14:08,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616945716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:08,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:08,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:08,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269298301] [2023-12-15 23:14:08,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:08,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:08,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:08,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:08,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:08,161 INFO L87 Difference]: Start difference. First operand 28920 states and 41379 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 23:14:08,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:08,529 INFO L93 Difference]: Finished difference Result 42762 states and 61131 transitions. [2023-12-15 23:14:08,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:08,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2023-12-15 23:14:08,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:08,555 INFO L225 Difference]: With dead ends: 42762 [2023-12-15 23:14:08,555 INFO L226 Difference]: Without dead ends: 16691 [2023-12-15 23:14:08,578 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 23:14:08,578 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 35 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:08,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 195 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:08,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16691 states. [2023-12-15 23:14:09,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16691 to 16347. [2023-12-15 23:14:09,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16347 states, 16346 states have (on average 1.4019331946653615) internal successors, (22916), 16346 states have internal predecessors, (22916), 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 23:14:09,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16347 states to 16347 states and 22916 transitions. [2023-12-15 23:14:09,215 INFO L78 Accepts]: Start accepts. Automaton has 16347 states and 22916 transitions. Word has length 77 [2023-12-15 23:14:09,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:09,216 INFO L495 AbstractCegarLoop]: Abstraction has 16347 states and 22916 transitions. [2023-12-15 23:14:09,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 23:14:09,216 INFO L276 IsEmpty]: Start isEmpty. Operand 16347 states and 22916 transitions. [2023-12-15 23:14:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-15 23:14:09,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:09,219 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:14:09,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:14:09,219 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:09,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:09,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1689859897, now seen corresponding path program 1 times [2023-12-15 23:14:09,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:09,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338277425] [2023-12-15 23:14:09,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:09,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:11,017 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:11,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:11,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338277425] [2023-12-15 23:14:11,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338277425] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:14:11,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286319365] [2023-12-15 23:14:11,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:11,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:14:11,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:14:11,019 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:14:11,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 23:14:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:11,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 23:14:11,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:14:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:11,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:14:12,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:12,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286319365] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:14:12,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:14:12,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 23 [2023-12-15 23:14:12,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181488826] [2023-12-15 23:14:12,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:14:12,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-15 23:14:12,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:12,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-15 23:14:12,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2023-12-15 23:14:12,104 INFO L87 Difference]: Start difference. First operand 16347 states and 22916 transitions. Second operand has 24 states, 24 states have (on average 7.791666666666667) internal successors, (187), 23 states have internal predecessors, (187), 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 23:14:13,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:13,497 INFO L93 Difference]: Finished difference Result 68428 states and 95070 transitions. [2023-12-15 23:14:13,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 23:14:13,498 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.791666666666667) internal successors, (187), 23 states have internal predecessors, (187), 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 77 [2023-12-15 23:14:13,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:13,565 INFO L225 Difference]: With dead ends: 68428 [2023-12-15 23:14:13,565 INFO L226 Difference]: Without dead ends: 55110 [2023-12-15 23:14:13,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=342, Invalid=1218, Unknown=0, NotChecked=0, Total=1560 [2023-12-15 23:14:13,576 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 1329 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:13,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 692 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 23:14:13,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55110 states. [2023-12-15 23:14:14,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55110 to 38093. [2023-12-15 23:14:14,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38093 states, 38092 states have (on average 1.39184080646855) internal successors, (53018), 38092 states have internal predecessors, (53018), 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 23:14:14,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38093 states to 38093 states and 53018 transitions. [2023-12-15 23:14:14,443 INFO L78 Accepts]: Start accepts. Automaton has 38093 states and 53018 transitions. Word has length 77 [2023-12-15 23:14:14,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:14,443 INFO L495 AbstractCegarLoop]: Abstraction has 38093 states and 53018 transitions. [2023-12-15 23:14:14,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.791666666666667) internal successors, (187), 23 states have internal predecessors, (187), 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 23:14:14,444 INFO L276 IsEmpty]: Start isEmpty. Operand 38093 states and 53018 transitions. [2023-12-15 23:14:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-15 23:14:14,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:14,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:14,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 23:14:14,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:14:14,648 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:14,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:14,648 INFO L85 PathProgramCache]: Analyzing trace with hash 290888472, now seen corresponding path program 1 times [2023-12-15 23:14:14,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:14,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370085665] [2023-12-15 23:14:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:14,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:14,710 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 23:14:14,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:14,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370085665] [2023-12-15 23:14:14,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370085665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:14,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:14,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:14,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133423166] [2023-12-15 23:14:14,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:14,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:14,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:14,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:14,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:14,713 INFO L87 Difference]: Start difference. First operand 38093 states and 53018 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 23:14:15,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:15,285 INFO L93 Difference]: Finished difference Result 58937 states and 82045 transitions. [2023-12-15 23:14:15,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:15,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2023-12-15 23:14:15,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:15,317 INFO L225 Difference]: With dead ends: 58937 [2023-12-15 23:14:15,317 INFO L226 Difference]: Without dead ends: 24454 [2023-12-15 23:14:15,341 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 23:14:15,341 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 28 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:15,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 182 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:15,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24454 states. [2023-12-15 23:14:15,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24454 to 24452. [2023-12-15 23:14:15,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24452 states, 24451 states have (on average 1.3627663490245798) internal successors, (33321), 24451 states have internal predecessors, (33321), 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 23:14:16,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24452 states to 24452 states and 33321 transitions. [2023-12-15 23:14:16,073 INFO L78 Accepts]: Start accepts. Automaton has 24452 states and 33321 transitions. Word has length 77 [2023-12-15 23:14:16,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:16,073 INFO L495 AbstractCegarLoop]: Abstraction has 24452 states and 33321 transitions. [2023-12-15 23:14:16,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 23:14:16,073 INFO L276 IsEmpty]: Start isEmpty. Operand 24452 states and 33321 transitions. [2023-12-15 23:14:16,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 23:14:16,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:16,075 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:14:16,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 23:14:16,075 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:16,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:16,076 INFO L85 PathProgramCache]: Analyzing trace with hash -809290575, now seen corresponding path program 1 times [2023-12-15 23:14:16,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:16,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996649852] [2023-12-15 23:14:16,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:16,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:16,117 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:16,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:16,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996649852] [2023-12-15 23:14:16,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996649852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:16,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:16,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:16,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918173633] [2023-12-15 23:14:16,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:16,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:16,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:16,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:16,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:16,119 INFO L87 Difference]: Start difference. First operand 24452 states and 33321 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 23:14:16,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:16,816 INFO L93 Difference]: Finished difference Result 54907 states and 74780 transitions. [2023-12-15 23:14:16,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:16,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-12-15 23:14:16,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:16,853 INFO L225 Difference]: With dead ends: 54907 [2023-12-15 23:14:16,853 INFO L226 Difference]: Without dead ends: 33258 [2023-12-15 23:14:16,863 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 23:14:16,864 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 53 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:16,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 221 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:16,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33258 states. [2023-12-15 23:14:17,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33258 to 33256. [2023-12-15 23:14:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33256 states, 33255 states have (on average 1.3448503984363254) internal successors, (44723), 33255 states have internal predecessors, (44723), 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 23:14:17,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33256 states to 33256 states and 44723 transitions. [2023-12-15 23:14:17,632 INFO L78 Accepts]: Start accepts. Automaton has 33256 states and 44723 transitions. Word has length 78 [2023-12-15 23:14:17,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:17,632 INFO L495 AbstractCegarLoop]: Abstraction has 33256 states and 44723 transitions. [2023-12-15 23:14:17,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 23:14:17,632 INFO L276 IsEmpty]: Start isEmpty. Operand 33256 states and 44723 transitions. [2023-12-15 23:14:17,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 23:14:17,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:17,636 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:14:17,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 23:14:17,636 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:17,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:17,636 INFO L85 PathProgramCache]: Analyzing trace with hash -914614435, now seen corresponding path program 1 times [2023-12-15 23:14:17,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:17,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921228022] [2023-12-15 23:14:17,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:17,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:17,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:17,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921228022] [2023-12-15 23:14:17,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921228022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:17,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:17,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:17,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411259921] [2023-12-15 23:14:17,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:17,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:17,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:17,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:17,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:17,674 INFO L87 Difference]: Start difference. First operand 33256 states and 44723 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 23:14:18,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:18,596 INFO L93 Difference]: Finished difference Result 84012 states and 112135 transitions. [2023-12-15 23:14:18,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:18,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-12-15 23:14:18,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:18,682 INFO L225 Difference]: With dead ends: 84012 [2023-12-15 23:14:18,682 INFO L226 Difference]: Without dead ends: 52277 [2023-12-15 23:14:18,698 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 23:14:18,699 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 50 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:18,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 216 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:18,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52277 states. [2023-12-15 23:14:19,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52277 to 52275. [2023-12-15 23:14:19,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52275 states, 52274 states have (on average 1.310402877147339) internal successors, (68500), 52274 states have internal predecessors, (68500), 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 23:14:20,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52275 states to 52275 states and 68500 transitions. [2023-12-15 23:14:20,045 INFO L78 Accepts]: Start accepts. Automaton has 52275 states and 68500 transitions. Word has length 78 [2023-12-15 23:14:20,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:20,045 INFO L495 AbstractCegarLoop]: Abstraction has 52275 states and 68500 transitions. [2023-12-15 23:14:20,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 23:14:20,045 INFO L276 IsEmpty]: Start isEmpty. Operand 52275 states and 68500 transitions. [2023-12-15 23:14:20,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 23:14:20,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:20,050 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:14:20,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 23:14:20,052 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:20,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:20,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1494851121, now seen corresponding path program 1 times [2023-12-15 23:14:20,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:20,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050839458] [2023-12-15 23:14:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:20,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:20,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:20,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050839458] [2023-12-15 23:14:20,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050839458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:20,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:20,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:20,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176723682] [2023-12-15 23:14:20,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:20,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:20,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:20,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:20,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:20,099 INFO L87 Difference]: Start difference. First operand 52275 states and 68500 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 23:14:21,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:21,804 INFO L93 Difference]: Finished difference Result 137266 states and 178429 transitions. [2023-12-15 23:14:21,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:21,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-12-15 23:14:21,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:21,921 INFO L225 Difference]: With dead ends: 137266 [2023-12-15 23:14:21,921 INFO L226 Difference]: Without dead ends: 88260 [2023-12-15 23:14:21,962 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 23:14:21,963 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 47 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:21,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 222 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88260 states. [2023-12-15 23:14:24,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88260 to 88258. [2023-12-15 23:14:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88258 states, 88257 states have (on average 1.2744824773105816) internal successors, (112482), 88257 states have internal predecessors, (112482), 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 23:14:24,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88258 states to 88258 states and 112482 transitions. [2023-12-15 23:14:24,413 INFO L78 Accepts]: Start accepts. Automaton has 88258 states and 112482 transitions. Word has length 78 [2023-12-15 23:14:24,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:24,413 INFO L495 AbstractCegarLoop]: Abstraction has 88258 states and 112482 transitions. [2023-12-15 23:14:24,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 23:14:24,413 INFO L276 IsEmpty]: Start isEmpty. Operand 88258 states and 112482 transitions. [2023-12-15 23:14:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 23:14:24,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:24,420 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:14:24,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 23:14:24,421 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:24,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:24,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1439203861, now seen corresponding path program 1 times [2023-12-15 23:14:24,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:24,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282233726] [2023-12-15 23:14:24,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:24,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:24,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:24,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282233726] [2023-12-15 23:14:24,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282233726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:24,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:24,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:24,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510746520] [2023-12-15 23:14:24,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:24,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:24,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:24,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:24,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:24,457 INFO L87 Difference]: Start difference. First operand 88258 states and 112482 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 23:14:26,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:26,433 INFO L93 Difference]: Finished difference Result 131584 states and 166849 transitions. [2023-12-15 23:14:26,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:26,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-12-15 23:14:26,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:26,526 INFO L225 Difference]: With dead ends: 131584 [2023-12-15 23:14:26,526 INFO L226 Difference]: Without dead ends: 86914 [2023-12-15 23:14:26,552 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 23:14:26,552 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 47 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:26,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 268 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:26,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86914 states. [2023-12-15 23:14:28,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86914 to 83907. [2023-12-15 23:14:28,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83907 states, 83906 states have (on average 1.252258479727314) internal successors, (105072), 83906 states have internal predecessors, (105072), 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 23:14:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83907 states to 83907 states and 105072 transitions. [2023-12-15 23:14:28,870 INFO L78 Accepts]: Start accepts. Automaton has 83907 states and 105072 transitions. Word has length 78 [2023-12-15 23:14:28,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:28,870 INFO L495 AbstractCegarLoop]: Abstraction has 83907 states and 105072 transitions. [2023-12-15 23:14:28,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 23:14:28,870 INFO L276 IsEmpty]: Start isEmpty. Operand 83907 states and 105072 transitions. [2023-12-15 23:14:28,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 23:14:28,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:28,877 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:14:28,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 23:14:28,877 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:28,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:28,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1259051597, now seen corresponding path program 1 times [2023-12-15 23:14:28,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:28,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111822273] [2023-12-15 23:14:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:28,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:28,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:28,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111822273] [2023-12-15 23:14:28,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111822273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:28,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:28,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:28,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949966621] [2023-12-15 23:14:28,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:28,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:28,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:28,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:28,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:28,911 INFO L87 Difference]: Start difference. First operand 83907 states and 105072 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 23:14:30,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:30,562 INFO L93 Difference]: Finished difference Result 118932 states and 148511 transitions. [2023-12-15 23:14:30,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:30,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-12-15 23:14:30,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:30,641 INFO L225 Difference]: With dead ends: 118932 [2023-12-15 23:14:30,642 INFO L226 Difference]: Without dead ends: 70925 [2023-12-15 23:14:30,664 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 23:14:30,665 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 50 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:30,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 259 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:30,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70925 states. Received shutdown request... [2023-12-15 23:14:31,522 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:14:32,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70925 to 67096. [2023-12-15 23:14:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67096 states, 67095 states have (on average 1.2381846635367761) internal successors, (83076), 67095 states have internal predecessors, (83076), 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 23:14:32,420 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:14:32,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 23:14:32,421 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-15 23:14:32,425 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:32,427 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:14:32,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:14:32 BoogieIcfgContainer [2023-12-15 23:14:32,429 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:14:32,430 INFO L158 Benchmark]: Toolchain (without parser) took 51832.58ms. Allocated memory was 180.4MB in the beginning and 6.7GB in the end (delta: 6.5GB). Free memory was 135.6MB in the beginning and 4.9GB in the end (delta: -4.8GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-15 23:14:32,430 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 180.4MB. Free memory is still 138.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:14:32,430 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.46ms. Allocated memory is still 180.4MB. Free memory was 135.1MB in the beginning and 119.9MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-15 23:14:32,430 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.98ms. Allocated memory is still 180.4MB. Free memory was 119.9MB in the beginning and 117.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:14:32,430 INFO L158 Benchmark]: Boogie Preprocessor took 56.30ms. Allocated memory is still 180.4MB. Free memory was 117.3MB in the beginning and 114.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 23:14:32,431 INFO L158 Benchmark]: RCFGBuilder took 578.11ms. Allocated memory is still 180.4MB. Free memory was 114.1MB in the beginning and 87.9MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-15 23:14:32,431 INFO L158 Benchmark]: TraceAbstraction took 50813.78ms. Allocated memory was 180.4MB in the beginning and 6.7GB in the end (delta: 6.5GB). Free memory was 87.4MB in the beginning and 4.9GB in the end (delta: -4.9GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-15 23:14:32,432 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 180.4MB. Free memory is still 138.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 310.46ms. Allocated memory is still 180.4MB. Free memory was 135.1MB in the beginning and 119.9MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 67.98ms. Allocated memory is still 180.4MB. Free memory was 119.9MB in the beginning and 117.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.30ms. Allocated memory is still 180.4MB. Free memory was 117.3MB in the beginning and 114.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 578.11ms. Allocated memory is still 180.4MB. Free memory was 114.1MB in the beginning and 87.9MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * TraceAbstraction took 50813.78ms. Allocated memory was 180.4MB in the beginning and 6.7GB in the end (delta: 6.5GB). Free memory was 87.4MB in the beginning and 4.9GB in the end (delta: -4.9GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 389]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 389). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.8s, OverallIterations: 25, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 24.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16063 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16063 mSDsluCounter, 11584 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8110 mSDsCounter, 287 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5096 IncrementalHoareTripleChecker+Invalid, 5383 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 287 mSolverCounterUnsat, 3474 mSDtfsCounter, 5096 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 814 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 359 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14312 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88258occurred in iteration=23, InterpolantAutomatonStates: 328, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 15.8s AutomataMinimizationTime, 25 MinimizatonAttempts, 123153 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 1847 NumberOfCodeBlocks, 1847 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 2043 ConstructedInterpolants, 0 QuantifiedInterpolants, 14313 SizeOfPredicates, 15 NumberOfNonLiveVariables, 886 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 31 InterpolantComputations, 22 PerfectInterpolantSequences, 224/282 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown