/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.3.2.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:12:58,458 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:12:58,531 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 23:12:58,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:12:58,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:12:58,558 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:12:58,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:12:58,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:12:58,559 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:12:58,562 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:12:58,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:12:58,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:12:58,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:12:58,564 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:12:58,564 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:12:58,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:12:58,565 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:12:58,565 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:12:58,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:12:58,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:12:58,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:12:58,566 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:12:58,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:12:58,567 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:12:58,567 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:12:58,567 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:12:58,567 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:12:58,567 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:12:58,568 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:12:58,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:12:58,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:12:58,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:12:58,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:12:58,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:12:58,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:12:58,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:12:58,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:12:58,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:12:58,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:12:58,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:12:58,570 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:12:58,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:12:58,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:12:58,570 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:12:58,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:12:58,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:12:58,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:12:58,752 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:12:58,752 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:12:58,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2023-12-15 23:12:59,716 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:12:59,897 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:12:59,900 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2023-12-15 23:12:59,908 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d554bb41/52382d7592ec4b77b758d99c33aba9d1/FLAGb35659b74 [2023-12-15 23:12:59,919 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d554bb41/52382d7592ec4b77b758d99c33aba9d1 [2023-12-15 23:12:59,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:12:59,921 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:12:59,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:12:59,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:12:59,929 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:12:59,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:12:59" (1/1) ... [2023-12-15 23:12:59,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b7b9169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:12:59, skipping insertion in model container [2023-12-15 23:12:59,931 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:12:59" (1/1) ... [2023-12-15 23:12:59,950 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:13:00,074 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.3.2.ufo.BOUNDED-6.pals.c[6691,6704] [2023-12-15 23:13:00,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:13:00,084 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:13:00,117 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.3.2.ufo.BOUNDED-6.pals.c[6691,6704] [2023-12-15 23:13:00,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:13:00,128 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:13:00,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:00 WrapperNode [2023-12-15 23:13:00,129 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:13:00,129 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:13:00,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:13:00,130 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:13:00,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:00" (1/1) ... [2023-12-15 23:13:00,140 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:00" (1/1) ... [2023-12-15 23:13:00,159 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 241 [2023-12-15 23:13:00,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:13:00,160 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:13:00,160 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:13:00,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:13:00,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:00" (1/1) ... [2023-12-15 23:13:00,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:00" (1/1) ... [2023-12-15 23:13:00,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:00" (1/1) ... [2023-12-15 23:13:00,181 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 23:13:00,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:00" (1/1) ... [2023-12-15 23:13:00,182 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:00" (1/1) ... [2023-12-15 23:13:00,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:00" (1/1) ... [2023-12-15 23:13:00,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:00" (1/1) ... [2023-12-15 23:13:00,190 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:00" (1/1) ... [2023-12-15 23:13:00,191 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:00" (1/1) ... [2023-12-15 23:13:00,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:13:00,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:13:00,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:13:00,194 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:13:00,195 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:00" (1/1) ... [2023-12-15 23:13:00,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:13:00,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:13:00,247 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 23:13:00,261 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 23:13:00,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:13:00,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:13:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:13:00,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:13:00,359 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:13:00,360 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:13:00,673 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:13:00,700 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:13:00,700 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 23:13:00,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:13:00 BoogieIcfgContainer [2023-12-15 23:13:00,701 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:13:00,702 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:13:00,703 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:13:00,707 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:13:00,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:12:59" (1/3) ... [2023-12-15 23:13:00,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227adea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:13:00, skipping insertion in model container [2023-12-15 23:13:00,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:00" (2/3) ... [2023-12-15 23:13:00,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227adea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:13:00, skipping insertion in model container [2023-12-15 23:13:00,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:13:00" (3/3) ... [2023-12-15 23:13:00,709 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2023-12-15 23:13:00,721 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:13:00,722 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:13:00,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:13:00,774 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;@1b91c7e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:13:00,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:13:00,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 59 states have (on average 1.7627118644067796) internal successors, (104), 60 states have internal predecessors, (104), 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 23:13:00,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-15 23:13:00,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:00,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:00,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:00,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:00,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1331125770, now seen corresponding path program 1 times [2023-12-15 23:13:00,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:00,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507933283] [2023-12-15 23:13:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:00,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:01,120 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 23:13:01,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:01,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507933283] [2023-12-15 23:13:01,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507933283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:01,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:01,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:13:01,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694539988] [2023-12-15 23:13:01,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:01,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:13:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:01,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:13:01,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:13:01,166 INFO L87 Difference]: Start difference. First operand has 61 states, 59 states have (on average 1.7627118644067796) internal successors, (104), 60 states have internal predecessors, (104), 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 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 23:13:01,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:01,255 INFO L93 Difference]: Finished difference Result 142 states and 237 transitions. [2023-12-15 23:13:01,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:13:01,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2023-12-15 23:13:01,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:01,267 INFO L225 Difference]: With dead ends: 142 [2023-12-15 23:13:01,268 INFO L226 Difference]: Without dead ends: 97 [2023-12-15 23:13:01,270 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 23:13:01,273 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 60 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:01,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 264 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:01,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-15 23:13:01,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 59. [2023-12-15 23:13:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 58 states have internal predecessors, (82), 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 23:13:01,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 82 transitions. [2023-12-15 23:13:01,312 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 82 transitions. Word has length 22 [2023-12-15 23:13:01,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:01,312 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 82 transitions. [2023-12-15 23:13:01,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 23:13:01,313 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 82 transitions. [2023-12-15 23:13:01,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-15 23:13:01,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:01,314 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] [2023-12-15 23:13:01,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:13:01,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:01,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:01,315 INFO L85 PathProgramCache]: Analyzing trace with hash 855144128, now seen corresponding path program 1 times [2023-12-15 23:13:01,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:01,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935363960] [2023-12-15 23:13:01,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:01,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:01,422 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 23:13:01,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:01,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935363960] [2023-12-15 23:13:01,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935363960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:01,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:01,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:01,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081120304] [2023-12-15 23:13:01,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:01,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:01,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:01,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:01,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:01,425 INFO L87 Difference]: Start difference. First operand 59 states and 82 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 23:13:01,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:01,441 INFO L93 Difference]: Finished difference Result 127 states and 190 transitions. [2023-12-15 23:13:01,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:01,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2023-12-15 23:13:01,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:01,442 INFO L225 Difference]: With dead ends: 127 [2023-12-15 23:13:01,443 INFO L226 Difference]: Without dead ends: 89 [2023-12-15 23:13:01,443 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 23:13:01,444 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 45 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 167 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 23:13:01,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 167 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:01,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-15 23:13:01,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2023-12-15 23:13:01,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.4767441860465116) internal successors, (127), 86 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:01,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 127 transitions. [2023-12-15 23:13:01,464 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 127 transitions. Word has length 38 [2023-12-15 23:13:01,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:01,465 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 127 transitions. [2023-12-15 23:13:01,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 23:13:01,465 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 127 transitions. [2023-12-15 23:13:01,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-15 23:13:01,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:01,466 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] [2023-12-15 23:13:01,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:13:01,466 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:01,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:01,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1766348127, now seen corresponding path program 1 times [2023-12-15 23:13:01,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:01,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095367186] [2023-12-15 23:13:01,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:01,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:01,541 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 23:13:01,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:01,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095367186] [2023-12-15 23:13:01,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095367186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:01,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:01,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:01,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518652189] [2023-12-15 23:13:01,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:01,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:01,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:01,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:01,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:01,548 INFO L87 Difference]: Start difference. First operand 87 states and 127 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 23:13:01,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:01,580 INFO L93 Difference]: Finished difference Result 203 states and 311 transitions. [2023-12-15 23:13:01,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:01,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2023-12-15 23:13:01,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:01,584 INFO L225 Difference]: With dead ends: 203 [2023-12-15 23:13:01,584 INFO L226 Difference]: Without dead ends: 137 [2023-12-15 23:13:01,584 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 23:13:01,585 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 41 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 164 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 23:13:01,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 164 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:01,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-15 23:13:01,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2023-12-15 23:13:01,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.507462686567164) internal successors, (202), 134 states have internal predecessors, (202), 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 23:13:01,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 202 transitions. [2023-12-15 23:13:01,595 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 202 transitions. Word has length 38 [2023-12-15 23:13:01,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:01,596 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 202 transitions. [2023-12-15 23:13:01,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 23:13:01,596 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 202 transitions. [2023-12-15 23:13:01,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-15 23:13:01,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:01,597 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] [2023-12-15 23:13:01,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:13:01,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:01,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:01,601 INFO L85 PathProgramCache]: Analyzing trace with hash -2141824130, now seen corresponding path program 1 times [2023-12-15 23:13:01,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:01,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103302333] [2023-12-15 23:13:01,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:01,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:01,709 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 23:13:01,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:01,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103302333] [2023-12-15 23:13:01,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103302333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:01,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:01,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:13:01,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835417626] [2023-12-15 23:13:01,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:01,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:13:01,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:01,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:13:01,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:13:01,711 INFO L87 Difference]: Start difference. First operand 135 states and 202 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 23:13:01,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:01,796 INFO L93 Difference]: Finished difference Result 591 states and 926 transitions. [2023-12-15 23:13:01,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:13:01,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2023-12-15 23:13:01,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:01,799 INFO L225 Difference]: With dead ends: 591 [2023-12-15 23:13:01,799 INFO L226 Difference]: Without dead ends: 477 [2023-12-15 23:13:01,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:13:01,810 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 308 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:01,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 409 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:01,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-12-15 23:13:01,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 247. [2023-12-15 23:13:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.5203252032520325) internal successors, (374), 246 states have internal predecessors, (374), 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 23:13:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 374 transitions. [2023-12-15 23:13:01,836 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 374 transitions. Word has length 38 [2023-12-15 23:13:01,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:01,837 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 374 transitions. [2023-12-15 23:13:01,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 23:13:01,837 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 374 transitions. [2023-12-15 23:13:01,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-15 23:13:01,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:01,842 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] [2023-12-15 23:13:01,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:13:01,842 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:01,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:01,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1985069537, now seen corresponding path program 1 times [2023-12-15 23:13:01,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:01,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227803517] [2023-12-15 23:13:01,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:01,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:01,974 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 23:13:01,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:01,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227803517] [2023-12-15 23:13:01,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227803517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:01,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:01,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:13:01,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071783471] [2023-12-15 23:13:01,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:01,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:13:01,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:01,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:13:01,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:13:01,975 INFO L87 Difference]: Start difference. First operand 247 states and 374 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 23:13:01,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:01,993 INFO L93 Difference]: Finished difference Result 273 states and 407 transitions. [2023-12-15 23:13:01,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:13:01,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 39 [2023-12-15 23:13:01,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:01,994 INFO L225 Difference]: With dead ends: 273 [2023-12-15 23:13:01,994 INFO L226 Difference]: Without dead ends: 271 [2023-12-15 23:13:01,994 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 23:13:01,995 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 1 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:01,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 227 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-15 23:13:02,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 263. [2023-12-15 23:13:02,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.4885496183206106) internal successors, (390), 262 states have internal predecessors, (390), 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 23:13:02,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 390 transitions. [2023-12-15 23:13:02,005 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 390 transitions. Word has length 39 [2023-12-15 23:13:02,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:02,005 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 390 transitions. [2023-12-15 23:13:02,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 23:13:02,005 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 390 transitions. [2023-12-15 23:13:02,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-15 23:13:02,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:02,006 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] [2023-12-15 23:13:02,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:13:02,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:02,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:02,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1406583098, now seen corresponding path program 1 times [2023-12-15 23:13:02,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:02,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167092098] [2023-12-15 23:13:02,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:02,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:02,036 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 23:13:02,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:02,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167092098] [2023-12-15 23:13:02,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167092098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:02,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:02,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:02,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462837743] [2023-12-15 23:13:02,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:02,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:02,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:02,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:02,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:02,038 INFO L87 Difference]: Start difference. First operand 263 states and 390 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 23:13:02,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:02,052 INFO L93 Difference]: Finished difference Result 691 states and 1032 transitions. [2023-12-15 23:13:02,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:02,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2023-12-15 23:13:02,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:02,054 INFO L225 Difference]: With dead ends: 691 [2023-12-15 23:13:02,054 INFO L226 Difference]: Without dead ends: 449 [2023-12-15 23:13:02,055 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 23:13:02,055 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 34 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 137 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 23:13:02,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:02,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-12-15 23:13:02,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 447. [2023-12-15 23:13:02,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.4663677130044843) internal successors, (654), 446 states have internal predecessors, (654), 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 23:13:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 654 transitions. [2023-12-15 23:13:02,067 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 654 transitions. Word has length 40 [2023-12-15 23:13:02,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:02,067 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 654 transitions. [2023-12-15 23:13:02,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 23:13:02,067 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 654 transitions. [2023-12-15 23:13:02,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-15 23:13:02,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:02,068 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] [2023-12-15 23:13:02,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:13:02,068 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:02,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:02,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1835898686, now seen corresponding path program 1 times [2023-12-15 23:13:02,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:02,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113070195] [2023-12-15 23:13:02,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:02,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:02,092 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 23:13:02,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:02,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113070195] [2023-12-15 23:13:02,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113070195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:02,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:02,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:02,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609473324] [2023-12-15 23:13:02,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:02,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:02,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:02,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:02,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:02,094 INFO L87 Difference]: Start difference. First operand 447 states and 654 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 23:13:02,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:02,111 INFO L93 Difference]: Finished difference Result 877 states and 1299 transitions. [2023-12-15 23:13:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:02,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2023-12-15 23:13:02,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:02,114 INFO L225 Difference]: With dead ends: 877 [2023-12-15 23:13:02,114 INFO L226 Difference]: Without dead ends: 635 [2023-12-15 23:13:02,114 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 23:13:02,115 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 49 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 177 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 23:13:02,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 177 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:02,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2023-12-15 23:13:02,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 633. [2023-12-15 23:13:02,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 632 states have (on average 1.4556962025316456) internal successors, (920), 632 states have internal predecessors, (920), 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 23:13:02,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 920 transitions. [2023-12-15 23:13:02,129 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 920 transitions. Word has length 40 [2023-12-15 23:13:02,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:02,129 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 920 transitions. [2023-12-15 23:13:02,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 23:13:02,129 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 920 transitions. [2023-12-15 23:13:02,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 23:13:02,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:02,130 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] [2023-12-15 23:13:02,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:13:02,131 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:02,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:02,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1126850639, now seen corresponding path program 1 times [2023-12-15 23:13:02,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:02,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282471737] [2023-12-15 23:13:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:02,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:13:02,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:02,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282471737] [2023-12-15 23:13:02,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282471737] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:13:02,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826022397] [2023-12-15 23:13:02,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:02,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:13:02,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:13:02,247 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 23:13:02,272 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 23:13:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:02,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 23:13:02,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:13:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:13:02,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:13:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:13:02,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826022397] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:13:02,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:13:02,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2023-12-15 23:13:02,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602072180] [2023-12-15 23:13:02,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:13:02,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 23:13:02,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:02,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 23:13:02,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:13:02,769 INFO L87 Difference]: Start difference. First operand 633 states and 920 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 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 23:13:02,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:02,819 INFO L93 Difference]: Finished difference Result 1833 states and 2708 transitions. [2023-12-15 23:13:02,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:13:02,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 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 58 [2023-12-15 23:13:02,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:02,824 INFO L225 Difference]: With dead ends: 1833 [2023-12-15 23:13:02,824 INFO L226 Difference]: Without dead ends: 1407 [2023-12-15 23:13:02,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:13:02,826 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 251 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:02,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 530 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:02,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2023-12-15 23:13:02,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1401. [2023-12-15 23:13:02,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1400 states have (on average 1.457142857142857) internal successors, (2040), 1400 states have internal predecessors, (2040), 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 23:13:02,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 2040 transitions. [2023-12-15 23:13:02,854 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 2040 transitions. Word has length 58 [2023-12-15 23:13:02,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:02,856 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 2040 transitions. [2023-12-15 23:13:02,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 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 23:13:02,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 2040 transitions. [2023-12-15 23:13:02,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 23:13:02,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:02,857 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:02,878 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 23:13:03,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:13:03,063 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:03,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:03,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1200740092, now seen corresponding path program 1 times [2023-12-15 23:13:03,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:03,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805205140] [2023-12-15 23:13:03,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:03,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 23:13:03,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:03,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805205140] [2023-12-15 23:13:03,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805205140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:03,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:03,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:13:03,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097976122] [2023-12-15 23:13:03,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:03,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:13:03,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:03,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:13:03,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:13:03,167 INFO L87 Difference]: Start difference. First operand 1401 states and 2040 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 23:13:03,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:03,265 INFO L93 Difference]: Finished difference Result 3405 states and 5004 transitions. [2023-12-15 23:13:03,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:13:03,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 59 [2023-12-15 23:13:03,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:03,273 INFO L225 Difference]: With dead ends: 3405 [2023-12-15 23:13:03,273 INFO L226 Difference]: Without dead ends: 2687 [2023-12-15 23:13:03,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:13:03,276 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 208 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:03,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 366 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:03,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2023-12-15 23:13:03,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 2077. [2023-12-15 23:13:03,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 2076 states have (on average 1.4527938342967244) internal successors, (3016), 2076 states have internal predecessors, (3016), 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 23:13:03,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 3016 transitions. [2023-12-15 23:13:03,329 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 3016 transitions. Word has length 59 [2023-12-15 23:13:03,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:03,330 INFO L495 AbstractCegarLoop]: Abstraction has 2077 states and 3016 transitions. [2023-12-15 23:13:03,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 23:13:03,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 3016 transitions. [2023-12-15 23:13:03,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 23:13:03,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:03,331 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:03,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:13:03,332 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:03,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:03,332 INFO L85 PathProgramCache]: Analyzing trace with hash 576240378, now seen corresponding path program 1 times [2023-12-15 23:13:03,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:03,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822910891] [2023-12-15 23:13:03,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:03,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 23:13:03,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:03,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822910891] [2023-12-15 23:13:03,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822910891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:03,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:03,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:13:03,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966720895] [2023-12-15 23:13:03,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:03,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:13:03,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:03,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:13:03,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:13:03,415 INFO L87 Difference]: Start difference. First operand 2077 states and 3016 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 23:13:03,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:03,498 INFO L93 Difference]: Finished difference Result 4081 states and 5980 transitions. [2023-12-15 23:13:03,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:13:03,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 59 [2023-12-15 23:13:03,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:03,508 INFO L225 Difference]: With dead ends: 4081 [2023-12-15 23:13:03,508 INFO L226 Difference]: Without dead ends: 3363 [2023-12-15 23:13:03,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:13:03,510 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 215 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:03,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 357 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:03,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2023-12-15 23:13:03,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 2753. [2023-12-15 23:13:03,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2752 states have (on average 1.4505813953488371) internal successors, (3992), 2752 states have internal predecessors, (3992), 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 23:13:03,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 3992 transitions. [2023-12-15 23:13:03,578 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 3992 transitions. Word has length 59 [2023-12-15 23:13:03,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:03,578 INFO L495 AbstractCegarLoop]: Abstraction has 2753 states and 3992 transitions. [2023-12-15 23:13:03,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 23:13:03,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 3992 transitions. [2023-12-15 23:13:03,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 23:13:03,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:03,579 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:13:03,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:13:03,580 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:03,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:03,580 INFO L85 PathProgramCache]: Analyzing trace with hash 741118013, now seen corresponding path program 1 times [2023-12-15 23:13:03,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:03,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029229560] [2023-12-15 23:13:03,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:03,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:03,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:13:03,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:03,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029229560] [2023-12-15 23:13:03,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029229560] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:03,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:03,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:13:03,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397065913] [2023-12-15 23:13:03,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:03,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:13:03,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:03,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:13:03,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:13:03,664 INFO L87 Difference]: Start difference. First operand 2753 states and 3992 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 23:13:03,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:03,745 INFO L93 Difference]: Finished difference Result 4469 states and 6520 transitions. [2023-12-15 23:13:03,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:13:03,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 59 [2023-12-15 23:13:03,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:03,756 INFO L225 Difference]: With dead ends: 4469 [2023-12-15 23:13:03,756 INFO L226 Difference]: Without dead ends: 3935 [2023-12-15 23:13:03,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:13:03,758 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 206 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:03,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 382 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:03,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2023-12-15 23:13:03,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 3325. [2023-12-15 23:13:03,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3325 states, 3324 states have (on average 1.447653429602888) internal successors, (4812), 3324 states have internal predecessors, (4812), 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 23:13:03,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 4812 transitions. [2023-12-15 23:13:03,851 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 4812 transitions. Word has length 59 [2023-12-15 23:13:03,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:03,851 INFO L495 AbstractCegarLoop]: Abstraction has 3325 states and 4812 transitions. [2023-12-15 23:13:03,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 23:13:03,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 4812 transitions. [2023-12-15 23:13:03,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 23:13:03,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:03,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:03,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:13:03,852 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:03,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:03,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1560695639, now seen corresponding path program 1 times [2023-12-15 23:13:03,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:03,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964684008] [2023-12-15 23:13:03,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:03,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:03,929 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 23:13:03,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:03,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964684008] [2023-12-15 23:13:03,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964684008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:03,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:03,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:03,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30208587] [2023-12-15 23:13:03,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:03,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:03,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:03,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:03,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:03,931 INFO L87 Difference]: Start difference. First operand 3325 states and 4812 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:03,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:03,985 INFO L93 Difference]: Finished difference Result 5962 states and 8606 transitions. [2023-12-15 23:13:03,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:03,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-15 23:13:03,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:03,993 INFO L225 Difference]: With dead ends: 5962 [2023-12-15 23:13:03,993 INFO L226 Difference]: Without dead ends: 2660 [2023-12-15 23:13:03,997 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 23:13:03,998 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 41 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 171 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 23:13:03,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:04,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2023-12-15 23:13:04,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2558. [2023-12-15 23:13:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2558 states, 2557 states have (on average 1.4278451310129057) internal successors, (3651), 2557 states have internal predecessors, (3651), 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 23:13:04,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2558 states to 2558 states and 3651 transitions. [2023-12-15 23:13:04,101 INFO L78 Accepts]: Start accepts. Automaton has 2558 states and 3651 transitions. Word has length 62 [2023-12-15 23:13:04,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:04,102 INFO L495 AbstractCegarLoop]: Abstraction has 2558 states and 3651 transitions. [2023-12-15 23:13:04,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:04,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2558 states and 3651 transitions. [2023-12-15 23:13:04,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 23:13:04,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:04,102 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:13:04,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:13:04,103 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:04,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:04,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1181811766, now seen corresponding path program 1 times [2023-12-15 23:13:04,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:04,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102800270] [2023-12-15 23:13:04,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:04,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:04,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:04,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102800270] [2023-12-15 23:13:04,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102800270] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:13:04,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118242459] [2023-12-15 23:13:04,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:04,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:13:04,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:13:04,342 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 23:13:04,403 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 23:13:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:04,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 23:13:04,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:13:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:05,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:13:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:05,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118242459] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:13:05,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:13:05,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 30 [2023-12-15 23:13:05,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437305350] [2023-12-15 23:13:05,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:13:05,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-15 23:13:05,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:05,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-15 23:13:05,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=760, Unknown=0, NotChecked=0, Total=930 [2023-12-15 23:13:05,780 INFO L87 Difference]: Start difference. First operand 2558 states and 3651 transitions. Second operand has 31 states, 31 states have (on average 5.483870967741935) internal successors, (170), 30 states have internal predecessors, (170), 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 23:13:06,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:06,758 INFO L93 Difference]: Finished difference Result 11339 states and 16022 transitions. [2023-12-15 23:13:06,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-15 23:13:06,772 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.483870967741935) internal successors, (170), 30 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-15 23:13:06,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:06,838 INFO L225 Difference]: With dead ends: 11339 [2023-12-15 23:13:06,838 INFO L226 Difference]: Without dead ends: 8810 [2023-12-15 23:13:06,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=715, Invalid=2365, Unknown=0, NotChecked=0, Total=3080 [2023-12-15 23:13:06,857 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 939 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:06,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 525 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:13:06,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8810 states. [2023-12-15 23:13:06,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8810 to 5847. [2023-12-15 23:13:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5847 states, 5846 states have (on average 1.4091686623332194) internal successors, (8238), 5846 states have internal predecessors, (8238), 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 23:13:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5847 states to 5847 states and 8238 transitions. [2023-12-15 23:13:07,019 INFO L78 Accepts]: Start accepts. Automaton has 5847 states and 8238 transitions. Word has length 62 [2023-12-15 23:13:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:07,019 INFO L495 AbstractCegarLoop]: Abstraction has 5847 states and 8238 transitions. [2023-12-15 23:13:07,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.483870967741935) internal successors, (170), 30 states have internal predecessors, (170), 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 23:13:07,019 INFO L276 IsEmpty]: Start isEmpty. Operand 5847 states and 8238 transitions. [2023-12-15 23:13:07,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 23:13:07,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:07,020 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:07,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 23:13:07,226 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,SelfDestructingSolverStorable12 [2023-12-15 23:13:07,227 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:07,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:07,227 INFO L85 PathProgramCache]: Analyzing trace with hash -795016727, now seen corresponding path program 1 times [2023-12-15 23:13:07,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:07,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095993874] [2023-12-15 23:13:07,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:07,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:07,303 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 23:13:07,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:07,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095993874] [2023-12-15 23:13:07,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095993874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:07,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:07,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:07,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128518360] [2023-12-15 23:13:07,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:07,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:07,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:07,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:07,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:07,305 INFO L87 Difference]: Start difference. First operand 5847 states and 8238 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:07,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:07,358 INFO L93 Difference]: Finished difference Result 8216 states and 11597 transitions. [2023-12-15 23:13:07,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:07,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-15 23:13:07,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:07,374 INFO L225 Difference]: With dead ends: 8216 [2023-12-15 23:13:07,374 INFO L226 Difference]: Without dead ends: 3055 [2023-12-15 23:13:07,378 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 23:13:07,379 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 29 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 149 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 23:13:07,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 149 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:07,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2023-12-15 23:13:07,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 2981. [2023-12-15 23:13:07,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2980 states have (on average 1.3781879194630873) internal successors, (4107), 2980 states have internal predecessors, (4107), 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 23:13:07,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 4107 transitions. [2023-12-15 23:13:07,445 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 4107 transitions. Word has length 62 [2023-12-15 23:13:07,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:07,445 INFO L495 AbstractCegarLoop]: Abstraction has 2981 states and 4107 transitions. [2023-12-15 23:13:07,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:07,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 4107 transitions. [2023-12-15 23:13:07,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 23:13:07,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:07,446 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:13:07,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:13:07,446 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:07,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:07,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1806311480, now seen corresponding path program 1 times [2023-12-15 23:13:07,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:07,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929033537] [2023-12-15 23:13:07,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:07,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:07,713 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:07,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:07,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929033537] [2023-12-15 23:13:07,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929033537] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:13:07,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437313483] [2023-12-15 23:13:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:07,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:13:07,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:13:07,715 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 23:13:07,718 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 23:13:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:07,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 23:13:07,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:13:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:08,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:13:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:08,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437313483] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:13:08,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:13:08,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2023-12-15 23:13:08,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944688636] [2023-12-15 23:13:08,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:13:08,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-15 23:13:08,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:08,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-15 23:13:08,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2023-12-15 23:13:08,703 INFO L87 Difference]: Start difference. First operand 2981 states and 4107 transitions. Second operand has 27 states, 27 states have (on average 5.777777777777778) internal successors, (156), 26 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:09,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:09,411 INFO L93 Difference]: Finished difference Result 11429 states and 15598 transitions. [2023-12-15 23:13:09,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-15 23:13:09,412 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.777777777777778) internal successors, (156), 26 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-15 23:13:09,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:09,429 INFO L225 Difference]: With dead ends: 11429 [2023-12-15 23:13:09,429 INFO L226 Difference]: Without dead ends: 9195 [2023-12-15 23:13:09,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=428, Invalid=1464, Unknown=0, NotChecked=0, Total=1892 [2023-12-15 23:13:09,436 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 906 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:09,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 819 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:13:09,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9195 states. [2023-12-15 23:13:09,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9195 to 6842. [2023-12-15 23:13:09,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6842 states, 6841 states have (on average 1.3718754568045608) internal successors, (9385), 6841 states have internal predecessors, (9385), 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 23:13:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6842 states to 6842 states and 9385 transitions. [2023-12-15 23:13:09,614 INFO L78 Accepts]: Start accepts. Automaton has 6842 states and 9385 transitions. Word has length 62 [2023-12-15 23:13:09,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:09,614 INFO L495 AbstractCegarLoop]: Abstraction has 6842 states and 9385 transitions. [2023-12-15 23:13:09,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.777777777777778) internal successors, (156), 26 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:09,615 INFO L276 IsEmpty]: Start isEmpty. Operand 6842 states and 9385 transitions. [2023-12-15 23:13:09,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 23:13:09,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:09,616 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:09,637 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 23:13:09,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:13:09,821 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:09,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:09,822 INFO L85 PathProgramCache]: Analyzing trace with hash -321287991, now seen corresponding path program 1 times [2023-12-15 23:13:09,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:09,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099342244] [2023-12-15 23:13:09,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:09,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:09,882 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 23:13:09,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:09,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099342244] [2023-12-15 23:13:09,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099342244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:09,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:09,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:09,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791457787] [2023-12-15 23:13:09,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:09,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:09,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:09,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:09,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:09,885 INFO L87 Difference]: Start difference. First operand 6842 states and 9385 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:09,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:09,951 INFO L93 Difference]: Finished difference Result 10260 states and 14069 transitions. [2023-12-15 23:13:09,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:09,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-15 23:13:09,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:09,959 INFO L225 Difference]: With dead ends: 10260 [2023-12-15 23:13:09,959 INFO L226 Difference]: Without dead ends: 4439 [2023-12-15 23:13:09,964 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 23:13:09,965 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 22 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 136 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 23:13:09,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 136 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:09,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4439 states. [2023-12-15 23:13:10,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4439 to 4437. [2023-12-15 23:13:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4437 states, 4436 states have (on average 1.333633904418395) internal successors, (5916), 4436 states have internal predecessors, (5916), 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 23:13:10,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4437 states to 4437 states and 5916 transitions. [2023-12-15 23:13:10,090 INFO L78 Accepts]: Start accepts. Automaton has 4437 states and 5916 transitions. Word has length 62 [2023-12-15 23:13:10,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:10,091 INFO L495 AbstractCegarLoop]: Abstraction has 4437 states and 5916 transitions. [2023-12-15 23:13:10,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:10,091 INFO L276 IsEmpty]: Start isEmpty. Operand 4437 states and 5916 transitions. [2023-12-15 23:13:10,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 23:13:10,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:10,092 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:13:10,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:13:10,092 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:10,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:10,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2089121957, now seen corresponding path program 1 times [2023-12-15 23:13:10,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:10,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502573842] [2023-12-15 23:13:10,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:10,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:10,276 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:10,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:10,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502573842] [2023-12-15 23:13:10,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502573842] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:13:10,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860591137] [2023-12-15 23:13:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:10,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:13:10,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:13:10,278 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:13:10,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 23:13:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:10,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 23:13:10,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:13:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:10,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:13:11,452 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:11,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860591137] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:13:11,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:13:11,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 25 [2023-12-15 23:13:11,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926539190] [2023-12-15 23:13:11,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:13:11,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-15 23:13:11,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:11,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-15 23:13:11,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2023-12-15 23:13:11,454 INFO L87 Difference]: Start difference. First operand 4437 states and 5916 transitions. Second operand has 26 states, 26 states have (on average 6.153846153846154) internal successors, (160), 25 states have internal predecessors, (160), 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 23:13:12,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:12,222 INFO L93 Difference]: Finished difference Result 19413 states and 25442 transitions. [2023-12-15 23:13:12,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-15 23:13:12,222 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.153846153846154) internal successors, (160), 25 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-15 23:13:12,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:12,243 INFO L225 Difference]: With dead ends: 19413 [2023-12-15 23:13:12,244 INFO L226 Difference]: Without dead ends: 15030 [2023-12-15 23:13:12,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=390, Invalid=1590, Unknown=0, NotChecked=0, Total=1980 [2023-12-15 23:13:12,252 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 597 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:12,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 660 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:13:12,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15030 states. [2023-12-15 23:13:12,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15030 to 13473. [2023-12-15 23:13:12,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13473 states, 13472 states have (on average 1.2999554631828978) internal successors, (17513), 13472 states have internal predecessors, (17513), 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 23:13:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13473 states to 13473 states and 17513 transitions. [2023-12-15 23:13:12,624 INFO L78 Accepts]: Start accepts. Automaton has 13473 states and 17513 transitions. Word has length 62 [2023-12-15 23:13:12,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:12,625 INFO L495 AbstractCegarLoop]: Abstraction has 13473 states and 17513 transitions. [2023-12-15 23:13:12,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.153846153846154) internal successors, (160), 25 states have internal predecessors, (160), 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 23:13:12,625 INFO L276 IsEmpty]: Start isEmpty. Operand 13473 states and 17513 transitions. [2023-12-15 23:13:12,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 23:13:12,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:12,626 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 23:13:12,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 23:13:12,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 23:13:12,832 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:12,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:12,832 INFO L85 PathProgramCache]: Analyzing trace with hash 643288650, now seen corresponding path program 1 times [2023-12-15 23:13:12,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:12,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860677152] [2023-12-15 23:13:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:12,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:12,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:12,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860677152] [2023-12-15 23:13:12,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860677152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:12,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:12,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:12,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408276326] [2023-12-15 23:13:12,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:12,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:12,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:12,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:12,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:12,882 INFO L87 Difference]: Start difference. First operand 13473 states and 17513 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:13,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:13,166 INFO L93 Difference]: Finished difference Result 33118 states and 43047 transitions. [2023-12-15 23:13:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:13,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-15 23:13:13,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:13,199 INFO L225 Difference]: With dead ends: 33118 [2023-12-15 23:13:13,200 INFO L226 Difference]: Without dead ends: 19811 [2023-12-15 23:13:13,214 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 23:13:13,215 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 35 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:13,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 189 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:13,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19811 states. [2023-12-15 23:13:13,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19811 to 15293. [2023-12-15 23:13:13,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15293 states, 15292 states have (on average 1.2862280931205858) internal successors, (19669), 15292 states have internal predecessors, (19669), 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 23:13:13,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15293 states to 15293 states and 19669 transitions. [2023-12-15 23:13:13,612 INFO L78 Accepts]: Start accepts. Automaton has 15293 states and 19669 transitions. Word has length 62 [2023-12-15 23:13:13,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:13,612 INFO L495 AbstractCegarLoop]: Abstraction has 15293 states and 19669 transitions. [2023-12-15 23:13:13,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:13,613 INFO L276 IsEmpty]: Start isEmpty. Operand 15293 states and 19669 transitions. [2023-12-15 23:13:13,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 23:13:13,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:13,614 INFO L195 NwaCegarLoop]: trace histogram [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 23:13:13,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:13:13,614 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:13,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:13,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1207652568, now seen corresponding path program 1 times [2023-12-15 23:13:13,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:13,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115221851] [2023-12-15 23:13:13,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:13,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:13,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:13,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115221851] [2023-12-15 23:13:13,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115221851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:13,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:13,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:13,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259819876] [2023-12-15 23:13:13,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:13,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:13,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:13,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:13,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:13,639 INFO L87 Difference]: Start difference. First operand 15293 states and 19669 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:13,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:13,978 INFO L93 Difference]: Finished difference Result 37582 states and 48311 transitions. [2023-12-15 23:13:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:13,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-15 23:13:13,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:14,005 INFO L225 Difference]: With dead ends: 37582 [2023-12-15 23:13:14,006 INFO L226 Difference]: Without dead ends: 22603 [2023-12-15 23:13:14,018 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 23:13:14,019 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 32 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:14,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 182 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:14,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22603 states. [2023-12-15 23:13:14,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22603 to 20052. [2023-12-15 23:13:14,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20052 states, 20051 states have (on average 1.2662211361029374) internal successors, (25389), 20051 states have internal predecessors, (25389), 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 23:13:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20052 states to 20052 states and 25389 transitions. [2023-12-15 23:13:14,527 INFO L78 Accepts]: Start accepts. Automaton has 20052 states and 25389 transitions. Word has length 63 [2023-12-15 23:13:14,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:14,527 INFO L495 AbstractCegarLoop]: Abstraction has 20052 states and 25389 transitions. [2023-12-15 23:13:14,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:14,528 INFO L276 IsEmpty]: Start isEmpty. Operand 20052 states and 25389 transitions. [2023-12-15 23:13:14,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 23:13:14,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:14,529 INFO L195 NwaCegarLoop]: trace histogram [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 23:13:14,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 23:13:14,530 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:14,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:14,530 INFO L85 PathProgramCache]: Analyzing trace with hash 933777477, now seen corresponding path program 1 times [2023-12-15 23:13:14,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:14,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332603065] [2023-12-15 23:13:14,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:14,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:14,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:14,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332603065] [2023-12-15 23:13:14,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332603065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:14,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:14,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:14,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28073028] [2023-12-15 23:13:14,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:14,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:14,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:14,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:14,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:14,563 INFO L87 Difference]: Start difference. First operand 20052 states and 25389 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:14,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:14,891 INFO L93 Difference]: Finished difference Result 24940 states and 31457 transitions. [2023-12-15 23:13:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:14,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-15 23:13:14,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:14,915 INFO L225 Difference]: With dead ends: 24940 [2023-12-15 23:13:14,915 INFO L226 Difference]: Without dead ends: 18684 [2023-12-15 23:13:14,925 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 23:13:14,925 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 40 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:14,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 165 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:14,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18684 states. [2023-12-15 23:13:15,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18684 to 18682. [2023-12-15 23:13:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18682 states, 18681 states have (on average 1.2477918740966758) internal successors, (23310), 18681 states have internal predecessors, (23310), 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 23:13:15,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18682 states to 18682 states and 23310 transitions. [2023-12-15 23:13:15,368 INFO L78 Accepts]: Start accepts. Automaton has 18682 states and 23310 transitions. Word has length 63 [2023-12-15 23:13:15,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:15,368 INFO L495 AbstractCegarLoop]: Abstraction has 18682 states and 23310 transitions. [2023-12-15 23:13:15,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:15,368 INFO L276 IsEmpty]: Start isEmpty. Operand 18682 states and 23310 transitions. [2023-12-15 23:13:15,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 23:13:15,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:15,374 INFO L195 NwaCegarLoop]: trace histogram [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 23:13:15,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 23:13:15,374 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:15,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:15,374 INFO L85 PathProgramCache]: Analyzing trace with hash 210667089, now seen corresponding path program 1 times [2023-12-15 23:13:15,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:15,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821046117] [2023-12-15 23:13:15,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:15,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:15,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:15,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821046117] [2023-12-15 23:13:15,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821046117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:15,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:15,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:15,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393389165] [2023-12-15 23:13:15,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:15,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:15,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:15,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:15,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:15,414 INFO L87 Difference]: Start difference. First operand 18682 states and 23310 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:15,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:15,941 INFO L93 Difference]: Finished difference Result 39942 states and 49724 transitions. [2023-12-15 23:13:15,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:15,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-15 23:13:15,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:15,964 INFO L225 Difference]: With dead ends: 39942 [2023-12-15 23:13:15,964 INFO L226 Difference]: Without dead ends: 23379 [2023-12-15 23:13:15,973 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 23:13:15,974 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 35 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 156 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 23:13:15,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 156 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:15,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23379 states. [2023-12-15 23:13:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23379 to 23377. [2023-12-15 23:13:16,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23377 states, 23376 states have (on average 1.2159479808350444) internal successors, (28424), 23376 states have internal predecessors, (28424), 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 23:13:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23377 states to 23377 states and 28424 transitions. [2023-12-15 23:13:16,473 INFO L78 Accepts]: Start accepts. Automaton has 23377 states and 28424 transitions. Word has length 63 [2023-12-15 23:13:16,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:16,474 INFO L495 AbstractCegarLoop]: Abstraction has 23377 states and 28424 transitions. [2023-12-15 23:13:16,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:16,474 INFO L276 IsEmpty]: Start isEmpty. Operand 23377 states and 28424 transitions. [2023-12-15 23:13:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 23:13:16,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:16,476 INFO L195 NwaCegarLoop]: trace histogram [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 23:13:16,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 23:13:16,476 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:16,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:16,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1674834651, now seen corresponding path program 1 times [2023-12-15 23:13:16,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:16,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255462026] [2023-12-15 23:13:16,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:16,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:16,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:16,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255462026] [2023-12-15 23:13:16,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255462026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:16,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:16,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:16,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244680875] [2023-12-15 23:13:16,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:16,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:16,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:16,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:16,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:16,602 INFO L87 Difference]: Start difference. First operand 23377 states and 28424 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:16,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:16,935 INFO L93 Difference]: Finished difference Result 31593 states and 38191 transitions. [2023-12-15 23:13:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:16,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-15 23:13:16,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:16,958 INFO L225 Difference]: With dead ends: 31593 [2023-12-15 23:13:16,958 INFO L226 Difference]: Without dead ends: 19052 [2023-12-15 23:13:16,970 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 23:13:16,971 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 32 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:16,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 178 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:17,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19052 states. [2023-12-15 23:13:17,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19052 to 19050. [2023-12-15 23:13:17,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19050 states, 19049 states have (on average 1.1921360701349153) internal successors, (22709), 19049 states have internal predecessors, (22709), 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 23:13:17,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19050 states to 19050 states and 22709 transitions. [2023-12-15 23:13:17,579 INFO L78 Accepts]: Start accepts. Automaton has 19050 states and 22709 transitions. Word has length 63 [2023-12-15 23:13:17,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:17,580 INFO L495 AbstractCegarLoop]: Abstraction has 19050 states and 22709 transitions. [2023-12-15 23:13:17,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:17,580 INFO L276 IsEmpty]: Start isEmpty. Operand 19050 states and 22709 transitions. [2023-12-15 23:13:17,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 23:13:17,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:17,582 INFO L195 NwaCegarLoop]: trace histogram [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 23:13:17,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 23:13:17,582 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:17,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:17,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1806922653, now seen corresponding path program 1 times [2023-12-15 23:13:17,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:17,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926689113] [2023-12-15 23:13:17,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:17,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:17,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:17,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926689113] [2023-12-15 23:13:17,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926689113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:13:17,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:13:17,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:13:17,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284698504] [2023-12-15 23:13:17,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:13:17,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:13:17,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:17,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:13:17,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:13:17,609 INFO L87 Difference]: Start difference. First operand 19050 states and 22709 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:17,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:17,981 INFO L93 Difference]: Finished difference Result 28344 states and 33682 transitions. [2023-12-15 23:13:17,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:13:17,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-15 23:13:17,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:17,999 INFO L225 Difference]: With dead ends: 28344 [2023-12-15 23:13:17,999 INFO L226 Difference]: Without dead ends: 16283 [2023-12-15 23:13:18,011 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 23:13:18,011 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 32 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 199 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 23:13:18,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 199 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:13:18,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16283 states. [2023-12-15 23:13:18,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16283 to 15368. [2023-12-15 23:13:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15368 states, 15367 states have (on average 1.1755059543176938) internal successors, (18064), 15367 states have internal predecessors, (18064), 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 23:13:18,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15368 states to 15368 states and 18064 transitions. [2023-12-15 23:13:18,457 INFO L78 Accepts]: Start accepts. Automaton has 15368 states and 18064 transitions. Word has length 63 [2023-12-15 23:13:18,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:18,457 INFO L495 AbstractCegarLoop]: Abstraction has 15368 states and 18064 transitions. [2023-12-15 23:13:18,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:13:18,457 INFO L276 IsEmpty]: Start isEmpty. Operand 15368 states and 18064 transitions. [2023-12-15 23:13:18,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 23:13:18,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:18,459 INFO L195 NwaCegarLoop]: trace histogram [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 23:13:18,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 23:13:18,459 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:18,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:18,460 INFO L85 PathProgramCache]: Analyzing trace with hash -438029821, now seen corresponding path program 1 times [2023-12-15 23:13:18,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:18,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617187623] [2023-12-15 23:13:18,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:18,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:18,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:18,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617187623] [2023-12-15 23:13:18,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617187623] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:13:18,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826182082] [2023-12-15 23:13:18,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:18,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:13:18,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:13:18,512 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:13:18,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 23:13:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:18,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 23:13:18,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:13:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:18,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:13:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:18,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826182082] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:13:18,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:13:18,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-15 23:13:18,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592299821] [2023-12-15 23:13:18,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:13:18,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 23:13:18,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:18,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 23:13:18,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:13:18,761 INFO L87 Difference]: Start difference. First operand 15368 states and 18064 transitions. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 10 states have internal predecessors, (106), 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 23:13:19,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:19,074 INFO L93 Difference]: Finished difference Result 15534 states and 18228 transitions. [2023-12-15 23:13:19,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:13:19,074 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-15 23:13:19,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:19,086 INFO L225 Difference]: With dead ends: 15534 [2023-12-15 23:13:19,086 INFO L226 Difference]: Without dead ends: 13799 [2023-12-15 23:13:19,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 116 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:13:19,090 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 298 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:19,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 187 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:13:19,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13799 states. [2023-12-15 23:13:19,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13799 to 13635. [2023-12-15 23:13:19,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13635 states, 13634 states have (on average 1.1744168989291477) internal successors, (16012), 13634 states have internal predecessors, (16012), 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 23:13:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13635 states to 13635 states and 16012 transitions. [2023-12-15 23:13:19,456 INFO L78 Accepts]: Start accepts. Automaton has 13635 states and 16012 transitions. Word has length 63 [2023-12-15 23:13:19,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:19,456 INFO L495 AbstractCegarLoop]: Abstraction has 13635 states and 16012 transitions. [2023-12-15 23:13:19,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 10 states have internal predecessors, (106), 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 23:13:19,457 INFO L276 IsEmpty]: Start isEmpty. Operand 13635 states and 16012 transitions. [2023-12-15 23:13:19,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-15 23:13:19,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:19,458 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:19,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 23:13:19,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-15 23:13:19,663 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:19,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:19,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1064385362, now seen corresponding path program 1 times [2023-12-15 23:13:19,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:19,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708829223] [2023-12-15 23:13:19,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:19,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:19,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:19,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708829223] [2023-12-15 23:13:19,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708829223] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:13:19,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251730154] [2023-12-15 23:13:19,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:19,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:13:19,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:13:19,752 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:13:19,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 23:13:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:19,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 23:13:19,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:13:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:20,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:13:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:20,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251730154] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:13:20,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:13:20,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-15 23:13:20,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664030313] [2023-12-15 23:13:20,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:13:20,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 23:13:20,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:20,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 23:13:20,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:13:20,098 INFO L87 Difference]: Start difference. First operand 13635 states and 16012 transitions. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 states have internal predecessors, (107), 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 23:13:20,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:13:20,477 INFO L93 Difference]: Finished difference Result 16422 states and 19343 transitions. [2023-12-15 23:13:20,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 23:13:20,478 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-15 23:13:20,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:13:20,489 INFO L225 Difference]: With dead ends: 16422 [2023-12-15 23:13:20,489 INFO L226 Difference]: Without dead ends: 12901 [2023-12-15 23:13:20,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 118 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:13:20,494 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 341 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:13:20,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 192 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:13:20,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12901 states. [2023-12-15 23:13:20,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12901 to 12664. [2023-12-15 23:13:20,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12664 states, 12663 states have (on average 1.1746031746031746) internal successors, (14874), 12663 states have internal predecessors, (14874), 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 23:13:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12664 states to 12664 states and 14874 transitions. [2023-12-15 23:13:20,855 INFO L78 Accepts]: Start accepts. Automaton has 12664 states and 14874 transitions. Word has length 64 [2023-12-15 23:13:20,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:13:20,855 INFO L495 AbstractCegarLoop]: Abstraction has 12664 states and 14874 transitions. [2023-12-15 23:13:20,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 10 states have internal predecessors, (107), 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 23:13:20,855 INFO L276 IsEmpty]: Start isEmpty. Operand 12664 states and 14874 transitions. [2023-12-15 23:13:20,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-15 23:13:20,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:13:20,857 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:13:20,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 23:13:21,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:13:21,063 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:13:21,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:13:21,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1979108011, now seen corresponding path program 1 times [2023-12-15 23:13:21,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:13:21,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323693671] [2023-12-15 23:13:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:21,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:13:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:22,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:13:22,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323693671] [2023-12-15 23:13:22,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323693671] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:13:22,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192624743] [2023-12-15 23:13:22,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:13:22,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:13:22,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:13:22,096 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:13:22,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 23:13:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:13:22,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-15 23:13:22,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:13:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:24,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:13:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:13:27,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192624743] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:13:27,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:13:27,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 22] total 62 [2023-12-15 23:13:27,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060060798] [2023-12-15 23:13:27,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:13:27,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-15 23:13:27,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:13:27,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-15 23:13:27,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=3395, Unknown=0, NotChecked=0, Total=3782 [2023-12-15 23:13:27,103 INFO L87 Difference]: Start difference. First operand 12664 states and 14874 transitions. Second operand has 62 states, 62 states have (on average 2.8870967741935485) internal successors, (179), 62 states have internal predecessors, (179), 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) Received shutdown request... [2023-12-15 23:14:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-12-15 23:14:05,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19848 ImplicationChecksByTransitivity, 38.0s TimeCoverageRelationStatistics Valid=8913, Invalid=47493, Unknown=0, NotChecked=0, Total=56406 [2023-12-15 23:14:05,538 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 3782 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 2780 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3782 SdHoareTripleChecker+Valid, 2261 SdHoareTripleChecker+Invalid, 3037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:05,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3782 Valid, 2261 Invalid, 3037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2780 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 23:14:05,539 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:14:05,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 23:14:05,546 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:14:05,547 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 23:14:05,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:14:05,744 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (12664states) and FLOYD_HOARE automaton (currently 178 states, 62 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 238 known predicates. [2023-12-15 23:14:05,748 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, 1] [2023-12-15 23:14:05,749 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:14:05,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:14:05 BoogieIcfgContainer [2023-12-15 23:14:05,751 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:14:05,751 INFO L158 Benchmark]: Toolchain (without parser) took 65829.60ms. Allocated memory was 237.0MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 190.7MB in the beginning and 2.5GB in the end (delta: -2.3GB). Peak memory consumption was 453.9MB. Max. memory is 8.0GB. [2023-12-15 23:14:05,751 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 197.1MB. Free memory is still 147.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:14:05,751 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.65ms. Allocated memory is still 237.0MB. Free memory was 190.3MB in the beginning and 176.4MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-15 23:14:05,751 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.55ms. Allocated memory is still 237.0MB. Free memory was 176.4MB in the beginning and 173.9MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:14:05,751 INFO L158 Benchmark]: Boogie Preprocessor took 33.02ms. Allocated memory is still 237.0MB. Free memory was 173.9MB in the beginning and 171.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 23:14:05,752 INFO L158 Benchmark]: RCFGBuilder took 506.92ms. Allocated memory is still 237.0MB. Free memory was 171.1MB in the beginning and 149.4MB in the end (delta: 21.7MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-15 23:14:05,752 INFO L158 Benchmark]: TraceAbstraction took 65048.16ms. Allocated memory was 237.0MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 148.7MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 412.0MB. Max. memory is 8.0GB. [2023-12-15 23:14:05,765 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 197.1MB. Free memory is still 147.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 206.65ms. Allocated memory is still 237.0MB. Free memory was 190.3MB in the beginning and 176.4MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.55ms. Allocated memory is still 237.0MB. Free memory was 176.4MB in the beginning and 173.9MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.02ms. Allocated memory is still 237.0MB. Free memory was 173.9MB in the beginning and 171.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 506.92ms. Allocated memory is still 237.0MB. Free memory was 171.1MB in the beginning and 149.4MB in the end (delta: 21.7MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 65048.16ms. Allocated memory was 237.0MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 148.7MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 412.0MB. 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: 306]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 306). Cancelled while NwaCegarLoop was constructing difference of abstraction (12664states) and FLOYD_HOARE automaton (currently 178 states, 62 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 238 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65.0s, OverallIterations: 26, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 45.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8579 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8579 mSDsluCounter, 9349 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6846 mSDsCounter, 394 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5200 IncrementalHoareTripleChecker+Invalid, 5594 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 394 mSolverCounterUnsat, 2503 mSDtfsCounter, 5200 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1240 GetRequests, 781 SyntacticMatches, 10 SemanticMatches, 448 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21469 ImplicationChecksByTransitivity, 40.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23377occurred in iteration=21, InterpolantAutomatonStates: 167, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.0s AutomataMinimizationTime, 25 MinimizatonAttempts, 17562 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 1865 NumberOfCodeBlocks, 1865 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 2260 ConstructedInterpolants, 0 QuantifiedInterpolants, 21325 SizeOfPredicates, 40 NumberOfNonLiveVariables, 1709 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 40 InterpolantComputations, 19 PerfectInterpolantSequences, 250/343 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