/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:48:05,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:48:05,548 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:48:05,552 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:48:05,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:48:05,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:48:05,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:48:05,577 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:48:05,578 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:48:05,578 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:48:05,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:48:05,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:48:05,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:48:05,579 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:48:05,579 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:48:05,580 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:48:05,580 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:48:05,580 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:48:05,580 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:48:05,580 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:48:05,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:48:05,583 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:48:05,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:48:05,584 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:48:05,589 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:48:05,589 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:48:05,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:48:05,589 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:48:05,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:48:05,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:48:05,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:48:05,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:48:05,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:48:05,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:48:05,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:48:05,591 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:48:05,591 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:48:05,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:48:05,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:48:05,592 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:48:05,592 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:48:05,598 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:48:05,598 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:48:05,598 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:48:05,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:48:05,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:48:05,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:48:05,823 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:48:05,824 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:48:05,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label54.c [2023-12-15 18:48:06,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:48:07,150 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:48:07,152 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label54.c [2023-12-15 18:48:07,165 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65b83962c/8cbdbfabc3fe4a25b84e34794bf84fda/FLAG8af65ed82 [2023-12-15 18:48:07,179 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65b83962c/8cbdbfabc3fe4a25b84e34794bf84fda [2023-12-15 18:48:07,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:48:07,183 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:48:07,184 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:48:07,184 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:48:07,199 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:48:07,199 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:48:07" (1/1) ... [2023-12-15 18:48:07,200 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c9e2115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:07, skipping insertion in model container [2023-12-15 18:48:07,200 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:48:07" (1/1) ... [2023-12-15 18:48:07,253 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:48:07,422 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label54.c[5423,5436] [2023-12-15 18:48:07,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:48:07,582 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:48:07,598 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label54.c[5423,5436] [2023-12-15 18:48:07,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:48:07,700 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:48:07,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:07 WrapperNode [2023-12-15 18:48:07,700 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:48:07,702 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:48:07,702 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:48:07,702 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:48:07,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:07" (1/1) ... [2023-12-15 18:48:07,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:07" (1/1) ... [2023-12-15 18:48:07,797 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2023-12-15 18:48:07,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:48:07,799 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:48:07,799 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:48:07,799 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:48:07,807 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:07" (1/1) ... [2023-12-15 18:48:07,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:07" (1/1) ... [2023-12-15 18:48:07,838 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:07" (1/1) ... [2023-12-15 18:48:07,868 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:48:07,869 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:07" (1/1) ... [2023-12-15 18:48:07,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:07" (1/1) ... [2023-12-15 18:48:07,901 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:07" (1/1) ... [2023-12-15 18:48:07,906 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:07" (1/1) ... [2023-12-15 18:48:07,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:07" (1/1) ... [2023-12-15 18:48:07,924 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:07" (1/1) ... [2023-12-15 18:48:07,934 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:48:07,935 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:48:07,935 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:48:07,935 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:48:07,936 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:07" (1/1) ... [2023-12-15 18:48:07,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:48:07,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:48:07,965 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:48:07,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:48:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:48:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:48:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:48:07,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:48:08,038 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:48:08,039 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:48:09,072 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:48:09,112 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:48:09,113 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:48:09,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:48:09 BoogieIcfgContainer [2023-12-15 18:48:09,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:48:09,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:48:09,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:48:09,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:48:09,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:48:07" (1/3) ... [2023-12-15 18:48:09,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c5b71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:48:09, skipping insertion in model container [2023-12-15 18:48:09,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:07" (2/3) ... [2023-12-15 18:48:09,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c5b71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:48:09, skipping insertion in model container [2023-12-15 18:48:09,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:48:09" (3/3) ... [2023-12-15 18:48:09,119 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label54.c [2023-12-15 18:48:09,131 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:48:09,131 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:48:09,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:48:09,190 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;@5bbd8fe3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:48:09,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:48:09,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:09,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-15 18:48:09,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:09,202 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] [2023-12-15 18:48:09,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:09,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:09,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2011310723, now seen corresponding path program 1 times [2023-12-15 18:48:09,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:09,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921228716] [2023-12-15 18:48:09,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:09,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:09,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:48:09,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:09,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921228716] [2023-12-15 18:48:09,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921228716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:09,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:09,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:48:09,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569246525] [2023-12-15 18:48:09,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:09,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:48:09,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:09,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:48:09,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:48:09,390 INFO L87 Difference]: Start difference. First operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:09,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:09,433 INFO L93 Difference]: Finished difference Result 441 states and 839 transitions. [2023-12-15 18:48:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:48:09,436 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-15 18:48:09,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:09,446 INFO L225 Difference]: With dead ends: 441 [2023-12-15 18:48:09,446 INFO L226 Difference]: Without dead ends: 219 [2023-12-15 18:48:09,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:48:09,452 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:09,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:48:09,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-15 18:48:09,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-12-15 18:48:09,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2023-12-15 18:48:09,491 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 36 [2023-12-15 18:48:09,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:09,491 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2023-12-15 18:48:09,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:09,491 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2023-12-15 18:48:09,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-15 18:48:09,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:09,492 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] [2023-12-15 18:48:09,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:48:09,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:09,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:09,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1274849753, now seen corresponding path program 1 times [2023-12-15 18:48:09,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:09,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59785941] [2023-12-15 18:48:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:09,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:48:09,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:09,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59785941] [2023-12-15 18:48:09,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59785941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:09,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:09,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:48:09,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513016127] [2023-12-15 18:48:09,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:09,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:09,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:09,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:09,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:09,598 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:10,309 INFO L93 Difference]: Finished difference Result 633 states and 1034 transitions. [2023-12-15 18:48:10,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:10,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-15 18:48:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:10,312 INFO L225 Difference]: With dead ends: 633 [2023-12-15 18:48:10,312 INFO L226 Difference]: Without dead ends: 415 [2023-12-15 18:48:10,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:10,313 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 185 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:10,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 69 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:48:10,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-15 18:48:10,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 407. [2023-12-15 18:48:10,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.6157635467980296) internal successors, (656), 406 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:10,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 656 transitions. [2023-12-15 18:48:10,327 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 656 transitions. Word has length 36 [2023-12-15 18:48:10,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:10,327 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 656 transitions. [2023-12-15 18:48:10,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:10,328 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 656 transitions. [2023-12-15 18:48:10,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-15 18:48:10,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:10,330 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:10,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:48:10,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:10,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:10,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1299651080, now seen corresponding path program 1 times [2023-12-15 18:48:10,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:10,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83875198] [2023-12-15 18:48:10,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:10,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:48:10,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:10,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83875198] [2023-12-15 18:48:10,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83875198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:10,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:10,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:48:10,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810810327] [2023-12-15 18:48:10,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:10,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:10,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:10,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:10,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:10,457 INFO L87 Difference]: Start difference. First operand 407 states and 656 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:11,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:11,112 INFO L93 Difference]: Finished difference Result 1190 states and 1929 transitions. [2023-12-15 18:48:11,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:11,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2023-12-15 18:48:11,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:11,115 INFO L225 Difference]: With dead ends: 1190 [2023-12-15 18:48:11,115 INFO L226 Difference]: Without dead ends: 784 [2023-12-15 18:48:11,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:11,117 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 141 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:11,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 150 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:48:11,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2023-12-15 18:48:11,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 782. [2023-12-15 18:48:11,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 781 states have (on average 1.439180537772087) internal successors, (1124), 781 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:11,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1124 transitions. [2023-12-15 18:48:11,131 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1124 transitions. Word has length 101 [2023-12-15 18:48:11,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:11,131 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 1124 transitions. [2023-12-15 18:48:11,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:11,132 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1124 transitions. [2023-12-15 18:48:11,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-15 18:48:11,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:11,134 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:11,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:48:11,134 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:11,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:11,135 INFO L85 PathProgramCache]: Analyzing trace with hash -679037458, now seen corresponding path program 1 times [2023-12-15 18:48:11,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:11,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117144390] [2023-12-15 18:48:11,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:11,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:11,266 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:48:11,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:11,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117144390] [2023-12-15 18:48:11,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117144390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:11,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:11,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:48:11,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378399880] [2023-12-15 18:48:11,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:11,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:11,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:11,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:11,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:11,268 INFO L87 Difference]: Start difference. First operand 782 states and 1124 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 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 18:48:11,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:11,897 INFO L93 Difference]: Finished difference Result 1947 states and 2800 transitions. [2023-12-15 18:48:11,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:11,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 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) Word has length 104 [2023-12-15 18:48:11,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:11,902 INFO L225 Difference]: With dead ends: 1947 [2023-12-15 18:48:11,902 INFO L226 Difference]: Without dead ends: 1166 [2023-12-15 18:48:11,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:11,911 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 144 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:11,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 114 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:48:11,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2023-12-15 18:48:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1153. [2023-12-15 18:48:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 1.3394097222222223) internal successors, (1543), 1152 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1543 transitions. [2023-12-15 18:48:11,932 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1543 transitions. Word has length 104 [2023-12-15 18:48:11,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:11,933 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1543 transitions. [2023-12-15 18:48:11,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 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 18:48:11,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1543 transitions. [2023-12-15 18:48:11,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-15 18:48:11,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:11,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:11,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:48:11,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:11,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:11,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1722638674, now seen corresponding path program 1 times [2023-12-15 18:48:11,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:11,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30921525] [2023-12-15 18:48:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:11,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:48:12,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:12,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30921525] [2023-12-15 18:48:12,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30921525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:12,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:12,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:48:12,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207724149] [2023-12-15 18:48:12,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:12,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:12,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:12,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:12,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:12,173 INFO L87 Difference]: Start difference. First operand 1153 states and 1543 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:12,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:12,731 INFO L93 Difference]: Finished difference Result 2675 states and 3528 transitions. [2023-12-15 18:48:12,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:12,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-15 18:48:12,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:12,736 INFO L225 Difference]: With dead ends: 2675 [2023-12-15 18:48:12,736 INFO L226 Difference]: Without dead ends: 1523 [2023-12-15 18:48:12,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:12,737 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 120 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:12,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 187 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:48:12,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2023-12-15 18:48:12,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1522. [2023-12-15 18:48:12,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1521 states have (on average 1.2689020381328073) internal successors, (1930), 1521 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:12,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1930 transitions. [2023-12-15 18:48:12,756 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1930 transitions. Word has length 105 [2023-12-15 18:48:12,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:12,757 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 1930 transitions. [2023-12-15 18:48:12,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:12,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1930 transitions. [2023-12-15 18:48:12,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-15 18:48:12,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:12,758 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:12,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:48:12,758 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:12,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:12,759 INFO L85 PathProgramCache]: Analyzing trace with hash 887267733, now seen corresponding path program 1 times [2023-12-15 18:48:12,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:12,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341896789] [2023-12-15 18:48:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:12,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:12,850 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:48:12,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:12,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341896789] [2023-12-15 18:48:12,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341896789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:12,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:12,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:48:12,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567030766] [2023-12-15 18:48:12,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:12,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:12,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:12,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:12,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:12,852 INFO L87 Difference]: Start difference. First operand 1522 states and 1930 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:13,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:13,433 INFO L93 Difference]: Finished difference Result 3967 states and 5150 transitions. [2023-12-15 18:48:13,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:13,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2023-12-15 18:48:13,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:13,441 INFO L225 Difference]: With dead ends: 3967 [2023-12-15 18:48:13,441 INFO L226 Difference]: Without dead ends: 2630 [2023-12-15 18:48:13,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:13,443 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 115 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:13,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 152 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:48:13,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2023-12-15 18:48:13,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2446. [2023-12-15 18:48:13,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2446 states, 2445 states have (on average 1.223721881390593) internal successors, (2992), 2445 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:13,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 2992 transitions. [2023-12-15 18:48:13,482 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 2992 transitions. Word has length 163 [2023-12-15 18:48:13,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:13,483 INFO L495 AbstractCegarLoop]: Abstraction has 2446 states and 2992 transitions. [2023-12-15 18:48:13,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:13,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 2992 transitions. [2023-12-15 18:48:13,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-15 18:48:13,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:13,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:13,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:48:13,486 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:13,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:13,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1201575989, now seen corresponding path program 1 times [2023-12-15 18:48:13,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:13,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900255159] [2023-12-15 18:48:13,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:13,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-15 18:48:13,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:13,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900255159] [2023-12-15 18:48:13,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900255159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:13,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:13,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:48:13,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936947874] [2023-12-15 18:48:13,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:13,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:13,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:13,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:13,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:13,608 INFO L87 Difference]: Start difference. First operand 2446 states and 2992 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:14,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:14,111 INFO L93 Difference]: Finished difference Result 5265 states and 6462 transitions. [2023-12-15 18:48:14,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:14,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 179 [2023-12-15 18:48:14,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:14,120 INFO L225 Difference]: With dead ends: 5265 [2023-12-15 18:48:14,120 INFO L226 Difference]: Without dead ends: 3004 [2023-12-15 18:48:14,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:14,123 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 75 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:14,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 151 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:48:14,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2023-12-15 18:48:14,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 2819. [2023-12-15 18:48:14,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2818 states have (on average 1.2221433640880057) internal successors, (3444), 2818 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:14,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 3444 transitions. [2023-12-15 18:48:14,163 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 3444 transitions. Word has length 179 [2023-12-15 18:48:14,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:14,163 INFO L495 AbstractCegarLoop]: Abstraction has 2819 states and 3444 transitions. [2023-12-15 18:48:14,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:14,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 3444 transitions. [2023-12-15 18:48:14,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-15 18:48:14,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:14,166 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:14,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:48:14,166 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:14,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:14,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1768364145, now seen corresponding path program 1 times [2023-12-15 18:48:14,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:14,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870768391] [2023-12-15 18:48:14,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:14,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:14,346 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:48:14,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:14,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870768391] [2023-12-15 18:48:14,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870768391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:14,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:14,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:14,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459919510] [2023-12-15 18:48:14,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:14,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:14,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:14,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:14,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:14,348 INFO L87 Difference]: Start difference. First operand 2819 states and 3444 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:14,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:14,899 INFO L93 Difference]: Finished difference Result 6566 states and 8100 transitions. [2023-12-15 18:48:14,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:14,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 216 [2023-12-15 18:48:14,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:14,910 INFO L225 Difference]: With dead ends: 6566 [2023-12-15 18:48:14,910 INFO L226 Difference]: Without dead ends: 3932 [2023-12-15 18:48:14,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:14,914 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 135 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:14,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 329 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:48:14,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2023-12-15 18:48:14,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 3555. [2023-12-15 18:48:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3555 states, 3554 states have (on average 1.2115925717501408) internal successors, (4306), 3554 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:14,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3555 states to 3555 states and 4306 transitions. [2023-12-15 18:48:14,959 INFO L78 Accepts]: Start accepts. Automaton has 3555 states and 4306 transitions. Word has length 216 [2023-12-15 18:48:14,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:14,959 INFO L495 AbstractCegarLoop]: Abstraction has 3555 states and 4306 transitions. [2023-12-15 18:48:14,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:14,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3555 states and 4306 transitions. [2023-12-15 18:48:14,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-15 18:48:14,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:14,961 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:14,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:48:14,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:14,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:14,961 INFO L85 PathProgramCache]: Analyzing trace with hash 282677039, now seen corresponding path program 1 times [2023-12-15 18:48:14,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:14,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270412114] [2023-12-15 18:48:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:14,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-15 18:48:15,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:15,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270412114] [2023-12-15 18:48:15,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270412114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:15,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:15,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:15,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030072660] [2023-12-15 18:48:15,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:15,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:15,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:15,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:15,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:15,138 INFO L87 Difference]: Start difference. First operand 3555 states and 4306 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:15,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:15,743 INFO L93 Difference]: Finished difference Result 9520 states and 11626 transitions. [2023-12-15 18:48:15,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:15,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 217 [2023-12-15 18:48:15,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:15,757 INFO L225 Difference]: With dead ends: 9520 [2023-12-15 18:48:15,758 INFO L226 Difference]: Without dead ends: 5966 [2023-12-15 18:48:15,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:15,766 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 189 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:15,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 329 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:48:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5966 states. [2023-12-15 18:48:15,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5966 to 5230. [2023-12-15 18:48:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5230 states, 5229 states have (on average 1.2061579651941097) internal successors, (6307), 5229 states have internal predecessors, (6307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:15,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 6307 transitions. [2023-12-15 18:48:15,833 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 6307 transitions. Word has length 217 [2023-12-15 18:48:15,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:15,834 INFO L495 AbstractCegarLoop]: Abstraction has 5230 states and 6307 transitions. [2023-12-15 18:48:15,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:15,834 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 6307 transitions. [2023-12-15 18:48:15,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-15 18:48:15,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:15,836 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:15,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:48:15,836 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:15,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:15,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1663102151, now seen corresponding path program 1 times [2023-12-15 18:48:15,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:15,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530633761] [2023-12-15 18:48:15,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:15,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:16,023 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:48:16,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:16,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530633761] [2023-12-15 18:48:16,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530633761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:16,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:16,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:16,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801814676] [2023-12-15 18:48:16,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:16,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:16,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:16,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:16,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:16,027 INFO L87 Difference]: Start difference. First operand 5230 states and 6307 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:16,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:16,632 INFO L93 Difference]: Finished difference Result 10456 states and 12610 transitions. [2023-12-15 18:48:16,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:16,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 254 [2023-12-15 18:48:16,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:16,648 INFO L225 Difference]: With dead ends: 10456 [2023-12-15 18:48:16,648 INFO L226 Difference]: Without dead ends: 5227 [2023-12-15 18:48:16,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:16,654 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 142 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:16,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 301 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:48:16,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5227 states. [2023-12-15 18:48:16,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5227 to 5227. [2023-12-15 18:48:16,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5227 states, 5226 states have (on average 1.178721775736701) internal successors, (6160), 5226 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:16,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 6160 transitions. [2023-12-15 18:48:16,724 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 6160 transitions. Word has length 254 [2023-12-15 18:48:16,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:16,724 INFO L495 AbstractCegarLoop]: Abstraction has 5227 states and 6160 transitions. [2023-12-15 18:48:16,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:16,724 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 6160 transitions. [2023-12-15 18:48:16,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-12-15 18:48:16,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:16,728 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:16,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:48:16,728 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:16,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:16,729 INFO L85 PathProgramCache]: Analyzing trace with hash -645915876, now seen corresponding path program 1 times [2023-12-15 18:48:16,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:16,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896241182] [2023-12-15 18:48:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:16,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-15 18:48:16,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:16,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896241182] [2023-12-15 18:48:16,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896241182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:16,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:16,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:16,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330932748] [2023-12-15 18:48:16,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:16,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:16,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:16,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:16,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:16,951 INFO L87 Difference]: Start difference. First operand 5227 states and 6160 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:17,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:17,457 INFO L93 Difference]: Finished difference Result 11194 states and 13195 transitions. [2023-12-15 18:48:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:17,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 268 [2023-12-15 18:48:17,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:17,481 INFO L225 Difference]: With dead ends: 11194 [2023-12-15 18:48:17,481 INFO L226 Difference]: Without dead ends: 5968 [2023-12-15 18:48:17,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:17,486 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 184 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:17,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 146 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:48:17,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5968 states. [2023-12-15 18:48:17,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5968 to 5227. [2023-12-15 18:48:17,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5227 states, 5226 states have (on average 1.178721775736701) internal successors, (6160), 5226 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 6160 transitions. [2023-12-15 18:48:17,593 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 6160 transitions. Word has length 268 [2023-12-15 18:48:17,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:17,593 INFO L495 AbstractCegarLoop]: Abstraction has 5227 states and 6160 transitions. [2023-12-15 18:48:17,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:17,593 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 6160 transitions. [2023-12-15 18:48:17,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-15 18:48:17,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:17,596 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:17,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:48:17,596 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:17,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:17,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1736933126, now seen corresponding path program 1 times [2023-12-15 18:48:17,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:17,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741571541] [2023-12-15 18:48:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:17,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:17,769 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-15 18:48:17,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:17,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741571541] [2023-12-15 18:48:17,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741571541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:17,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:17,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:17,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997040160] [2023-12-15 18:48:17,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:17,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:17,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:17,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:17,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:17,771 INFO L87 Difference]: Start difference. First operand 5227 states and 6160 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:18,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:18,395 INFO L93 Difference]: Finished difference Result 12848 states and 15239 transitions. [2023-12-15 18:48:18,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:18,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 271 [2023-12-15 18:48:18,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:18,407 INFO L225 Difference]: With dead ends: 12848 [2023-12-15 18:48:18,407 INFO L226 Difference]: Without dead ends: 7622 [2023-12-15 18:48:18,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:18,412 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 196 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:18,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 69 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:48:18,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7622 states. [2023-12-15 18:48:18,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7622 to 7251. [2023-12-15 18:48:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7251 states, 7250 states have (on average 1.1842758620689655) internal successors, (8586), 7250 states have internal predecessors, (8586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7251 states to 7251 states and 8586 transitions. [2023-12-15 18:48:18,491 INFO L78 Accepts]: Start accepts. Automaton has 7251 states and 8586 transitions. Word has length 271 [2023-12-15 18:48:18,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:18,492 INFO L495 AbstractCegarLoop]: Abstraction has 7251 states and 8586 transitions. [2023-12-15 18:48:18,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 7251 states and 8586 transitions. [2023-12-15 18:48:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2023-12-15 18:48:18,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:18,497 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:18,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:48:18,497 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:18,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:18,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1765998982, now seen corresponding path program 1 times [2023-12-15 18:48:18,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:18,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229379502] [2023-12-15 18:48:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:18,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-15 18:48:18,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:18,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229379502] [2023-12-15 18:48:18,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229379502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:18,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:18,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:18,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53943668] [2023-12-15 18:48:18,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:18,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:18,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:18,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:18,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:18,667 INFO L87 Difference]: Start difference. First operand 7251 states and 8586 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:19,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:19,184 INFO L93 Difference]: Finished difference Result 15788 states and 18675 transitions. [2023-12-15 18:48:19,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:19,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 309 [2023-12-15 18:48:19,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:19,195 INFO L225 Difference]: With dead ends: 15788 [2023-12-15 18:48:19,195 INFO L226 Difference]: Without dead ends: 8538 [2023-12-15 18:48:19,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:19,202 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 184 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:19,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 144 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:48:19,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8538 states. [2023-12-15 18:48:19,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8538 to 6142. [2023-12-15 18:48:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6142 states, 6141 states have (on average 1.185963198176193) internal successors, (7283), 6141 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:19,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 7283 transitions. [2023-12-15 18:48:19,269 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 7283 transitions. Word has length 309 [2023-12-15 18:48:19,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:19,269 INFO L495 AbstractCegarLoop]: Abstraction has 6142 states and 7283 transitions. [2023-12-15 18:48:19,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:19,269 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 7283 transitions. [2023-12-15 18:48:19,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-12-15 18:48:19,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:19,275 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:19,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:48:19,275 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:19,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:19,276 INFO L85 PathProgramCache]: Analyzing trace with hash 930635365, now seen corresponding path program 1 times [2023-12-15 18:48:19,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:19,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153080397] [2023-12-15 18:48:19,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:19,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-12-15 18:48:19,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:19,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153080397] [2023-12-15 18:48:19,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153080397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:19,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:19,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:19,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700722416] [2023-12-15 18:48:19,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:19,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:48:19,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:19,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:48:19,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:19,654 INFO L87 Difference]: Start difference. First operand 6142 states and 7283 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:20,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:20,302 INFO L93 Difference]: Finished difference Result 14509 states and 17069 transitions. [2023-12-15 18:48:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:48:20,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 319 [2023-12-15 18:48:20,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:20,315 INFO L225 Difference]: With dead ends: 14509 [2023-12-15 18:48:20,315 INFO L226 Difference]: Without dead ends: 8354 [2023-12-15 18:48:20,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:20,321 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 71 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:20,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 144 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:48:20,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8354 states. [2023-12-15 18:48:20,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8354 to 8169. [2023-12-15 18:48:20,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8169 states, 8168 states have (on average 1.1726248775710089) internal successors, (9578), 8168 states have internal predecessors, (9578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:20,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8169 states to 8169 states and 9578 transitions. [2023-12-15 18:48:20,423 INFO L78 Accepts]: Start accepts. Automaton has 8169 states and 9578 transitions. Word has length 319 [2023-12-15 18:48:20,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:20,423 INFO L495 AbstractCegarLoop]: Abstraction has 8169 states and 9578 transitions. [2023-12-15 18:48:20,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:20,424 INFO L276 IsEmpty]: Start isEmpty. Operand 8169 states and 9578 transitions. [2023-12-15 18:48:20,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2023-12-15 18:48:20,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:20,433 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:20,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:48:20,433 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:20,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:20,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1553992999, now seen corresponding path program 1 times [2023-12-15 18:48:20,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:20,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139072028] [2023-12-15 18:48:20,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:20,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:20,761 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-15 18:48:20,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:20,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139072028] [2023-12-15 18:48:20,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139072028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:20,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:20,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:48:20,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635524341] [2023-12-15 18:48:20,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:20,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:48:20,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:20,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:48:20,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:20,763 INFO L87 Difference]: Start difference. First operand 8169 states and 9578 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:21,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:21,832 INFO L93 Difference]: Finished difference Result 21876 states and 25679 transitions. [2023-12-15 18:48:21,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:48:21,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 393 [2023-12-15 18:48:21,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:21,879 INFO L225 Difference]: With dead ends: 21876 [2023-12-15 18:48:21,880 INFO L226 Difference]: Without dead ends: 14076 [2023-12-15 18:48:21,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:21,884 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 293 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:21,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 83 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:48:21,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14076 states. [2023-12-15 18:48:21,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14076 to 12972. [2023-12-15 18:48:22,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.1669878960758615) internal successors, (15137), 12971 states have internal predecessors, (15137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:22,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 15137 transitions. [2023-12-15 18:48:22,015 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 15137 transitions. Word has length 393 [2023-12-15 18:48:22,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:22,016 INFO L495 AbstractCegarLoop]: Abstraction has 12972 states and 15137 transitions. [2023-12-15 18:48:22,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:22,016 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 15137 transitions. [2023-12-15 18:48:22,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-12-15 18:48:22,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:22,028 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:22,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:48:22,029 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:22,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:22,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1269061677, now seen corresponding path program 1 times [2023-12-15 18:48:22,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:22,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621916067] [2023-12-15 18:48:22,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:22,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:22,289 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-15 18:48:22,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:22,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621916067] [2023-12-15 18:48:22,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621916067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:22,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:22,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:22,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115908574] [2023-12-15 18:48:22,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:22,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:48:22,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:22,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:48:22,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:22,291 INFO L87 Difference]: Start difference. First operand 12972 states and 15137 transitions. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:23,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:23,216 INFO L93 Difference]: Finished difference Result 32967 states and 38383 transitions. [2023-12-15 18:48:23,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:48:23,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 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 446 [2023-12-15 18:48:23,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:23,240 INFO L225 Difference]: With dead ends: 32967 [2023-12-15 18:48:23,240 INFO L226 Difference]: Without dead ends: 20364 [2023-12-15 18:48:23,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:23,252 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 216 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:23,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 82 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:48:23,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20364 states. [2023-12-15 18:48:23,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20364 to 17776. [2023-12-15 18:48:23,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17776 states, 17775 states have (on average 1.161293952180028) internal successors, (20642), 17775 states have internal predecessors, (20642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:23,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17776 states to 17776 states and 20642 transitions. [2023-12-15 18:48:23,425 INFO L78 Accepts]: Start accepts. Automaton has 17776 states and 20642 transitions. Word has length 446 [2023-12-15 18:48:23,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:23,425 INFO L495 AbstractCegarLoop]: Abstraction has 17776 states and 20642 transitions. [2023-12-15 18:48:23,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:23,425 INFO L276 IsEmpty]: Start isEmpty. Operand 17776 states and 20642 transitions. [2023-12-15 18:48:23,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2023-12-15 18:48:23,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:23,437 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:23,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:48:23,437 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:23,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:23,437 INFO L85 PathProgramCache]: Analyzing trace with hash -854635248, now seen corresponding path program 1 times [2023-12-15 18:48:23,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:23,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494394123] [2023-12-15 18:48:23,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:23,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:23,666 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2023-12-15 18:48:23,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:23,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494394123] [2023-12-15 18:48:23,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494394123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:23,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:23,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:23,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333361805] [2023-12-15 18:48:23,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:23,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:23,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:23,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:23,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:23,668 INFO L87 Difference]: Start difference. First operand 17776 states and 20642 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:24,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:24,332 INFO L93 Difference]: Finished difference Result 34441 states and 40070 transitions. [2023-12-15 18:48:24,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:24,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 513 [2023-12-15 18:48:24,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:24,350 INFO L225 Difference]: With dead ends: 34441 [2023-12-15 18:48:24,350 INFO L226 Difference]: Without dead ends: 17034 [2023-12-15 18:48:24,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:24,363 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 67 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:24,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 308 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:48:24,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17034 states. [2023-12-15 18:48:24,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17034 to 12600. [2023-12-15 18:48:24,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12600 states, 12599 states have (on average 1.1617588697515675) internal successors, (14637), 12599 states have internal predecessors, (14637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:24,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12600 states to 12600 states and 14637 transitions. [2023-12-15 18:48:24,489 INFO L78 Accepts]: Start accepts. Automaton has 12600 states and 14637 transitions. Word has length 513 [2023-12-15 18:48:24,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:24,489 INFO L495 AbstractCegarLoop]: Abstraction has 12600 states and 14637 transitions. [2023-12-15 18:48:24,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:24,489 INFO L276 IsEmpty]: Start isEmpty. Operand 12600 states and 14637 transitions. [2023-12-15 18:48:24,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-12-15 18:48:24,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:24,501 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:24,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:48:24,501 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:24,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:24,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1214349163, now seen corresponding path program 1 times [2023-12-15 18:48:24,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:24,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094707212] [2023-12-15 18:48:24,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:24,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 559 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-15 18:48:24,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:24,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094707212] [2023-12-15 18:48:24,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094707212] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:24,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:24,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:48:24,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013158453] [2023-12-15 18:48:24,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:24,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:48:24,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:24,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:48:24,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:24,989 INFO L87 Difference]: Start difference. First operand 12600 states and 14637 transitions. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:26,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:26,022 INFO L93 Difference]: Finished difference Result 28898 states and 33609 transitions. [2023-12-15 18:48:26,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:48:26,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 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 534 [2023-12-15 18:48:26,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:26,039 INFO L225 Difference]: With dead ends: 28898 [2023-12-15 18:48:26,039 INFO L226 Difference]: Without dead ends: 16667 [2023-12-15 18:48:26,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:26,049 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 297 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:26,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 77 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:48:26,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16667 states. [2023-12-15 18:48:26,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16667 to 12048. [2023-12-15 18:48:26,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12048 states, 12047 states have (on average 1.1661824520627542) internal successors, (14049), 12047 states have internal predecessors, (14049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12048 states to 12048 states and 14049 transitions. [2023-12-15 18:48:26,165 INFO L78 Accepts]: Start accepts. Automaton has 12048 states and 14049 transitions. Word has length 534 [2023-12-15 18:48:26,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:26,166 INFO L495 AbstractCegarLoop]: Abstraction has 12048 states and 14049 transitions. [2023-12-15 18:48:26,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:26,166 INFO L276 IsEmpty]: Start isEmpty. Operand 12048 states and 14049 transitions. [2023-12-15 18:48:26,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2023-12-15 18:48:26,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:26,177 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:26,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:48:26,177 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:26,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:26,179 INFO L85 PathProgramCache]: Analyzing trace with hash 49488198, now seen corresponding path program 1 times [2023-12-15 18:48:26,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:26,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884011184] [2023-12-15 18:48:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:26,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-15 18:48:26,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:26,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884011184] [2023-12-15 18:48:26,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884011184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:26,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:26,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:48:26,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877981470] [2023-12-15 18:48:26,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:26,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:48:26,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:26,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:48:26,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:26,758 INFO L87 Difference]: Start difference. First operand 12048 states and 14049 transitions. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:27,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:27,799 INFO L93 Difference]: Finished difference Result 30745 states and 35968 transitions. [2023-12-15 18:48:27,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:48:27,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 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 560 [2023-12-15 18:48:27,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:27,817 INFO L225 Difference]: With dead ends: 30745 [2023-12-15 18:48:27,817 INFO L226 Difference]: Without dead ends: 19066 [2023-12-15 18:48:27,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:27,826 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 184 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:27,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 83 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:48:27,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19066 states. [2023-12-15 18:48:27,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19066 to 14452. [2023-12-15 18:48:27,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14452 states, 14451 states have (on average 1.1715452217839595) internal successors, (16930), 14451 states have internal predecessors, (16930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:27,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14452 states to 14452 states and 16930 transitions. [2023-12-15 18:48:27,973 INFO L78 Accepts]: Start accepts. Automaton has 14452 states and 16930 transitions. Word has length 560 [2023-12-15 18:48:27,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:27,974 INFO L495 AbstractCegarLoop]: Abstraction has 14452 states and 16930 transitions. [2023-12-15 18:48:27,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:27,974 INFO L276 IsEmpty]: Start isEmpty. Operand 14452 states and 16930 transitions. [2023-12-15 18:48:27,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2023-12-15 18:48:27,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:27,985 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:27,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:48:27,985 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:27,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:27,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1782776660, now seen corresponding path program 1 times [2023-12-15 18:48:27,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:27,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773118005] [2023-12-15 18:48:27,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:27,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 600 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2023-12-15 18:48:28,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:28,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773118005] [2023-12-15 18:48:28,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773118005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:28,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:28,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:48:28,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206084255] [2023-12-15 18:48:28,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:28,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:28,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:28,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:28,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:28,181 INFO L87 Difference]: Start difference. First operand 14452 states and 16930 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:28,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:28,548 INFO L93 Difference]: Finished difference Result 28526 states and 33464 transitions. [2023-12-15 18:48:28,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:28,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 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 601 [2023-12-15 18:48:28,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:28,559 INFO L225 Difference]: With dead ends: 28526 [2023-12-15 18:48:28,559 INFO L226 Difference]: Without dead ends: 14443 [2023-12-15 18:48:28,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:28,567 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 188 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:28,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 37 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:48:28,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14443 states. [2023-12-15 18:48:28,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14443 to 14439. [2023-12-15 18:48:28,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14439 states, 14438 states have (on average 1.1708685413492173) internal successors, (16905), 14438 states have internal predecessors, (16905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:28,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14439 states to 14439 states and 16905 transitions. [2023-12-15 18:48:28,688 INFO L78 Accepts]: Start accepts. Automaton has 14439 states and 16905 transitions. Word has length 601 [2023-12-15 18:48:28,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:28,688 INFO L495 AbstractCegarLoop]: Abstraction has 14439 states and 16905 transitions. [2023-12-15 18:48:28,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:28,688 INFO L276 IsEmpty]: Start isEmpty. Operand 14439 states and 16905 transitions. [2023-12-15 18:48:28,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2023-12-15 18:48:28,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:28,698 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:28,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:48:28,698 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:28,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:28,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1529951816, now seen corresponding path program 1 times [2023-12-15 18:48:28,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:28,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920246385] [2023-12-15 18:48:28,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:28,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 594 proven. 0 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2023-12-15 18:48:29,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:29,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920246385] [2023-12-15 18:48:29,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920246385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:29,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:29,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:29,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275451539] [2023-12-15 18:48:29,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:29,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:29,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:29,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:29,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:29,014 INFO L87 Difference]: Start difference. First operand 14439 states and 16905 transitions. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:29,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:29,650 INFO L93 Difference]: Finished difference Result 30546 states and 35891 transitions. [2023-12-15 18:48:29,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:29,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 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 621 [2023-12-15 18:48:29,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:29,665 INFO L225 Difference]: With dead ends: 30546 [2023-12-15 18:48:29,665 INFO L226 Difference]: Without dead ends: 16290 [2023-12-15 18:48:29,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:29,675 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 34 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:29,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 367 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:48:29,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16290 states. [2023-12-15 18:48:29,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16290 to 15171. [2023-12-15 18:48:29,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15171 states, 15170 states have (on average 1.1391562294001318) internal successors, (17281), 15170 states have internal predecessors, (17281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:29,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15171 states to 15171 states and 17281 transitions. [2023-12-15 18:48:29,815 INFO L78 Accepts]: Start accepts. Automaton has 15171 states and 17281 transitions. Word has length 621 [2023-12-15 18:48:29,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:29,816 INFO L495 AbstractCegarLoop]: Abstraction has 15171 states and 17281 transitions. [2023-12-15 18:48:29,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:29,816 INFO L276 IsEmpty]: Start isEmpty. Operand 15171 states and 17281 transitions. [2023-12-15 18:48:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2023-12-15 18:48:29,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:29,826 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 18:48:29,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:48:29,826 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:29,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:29,826 INFO L85 PathProgramCache]: Analyzing trace with hash 795721172, now seen corresponding path program 1 times [2023-12-15 18:48:29,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:29,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427148680] [2023-12-15 18:48:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:29,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 621 proven. 154 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-12-15 18:48:30,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:30,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427148680] [2023-12-15 18:48:30,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427148680] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:48:30,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260421713] [2023-12-15 18:48:30,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:30,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:48:30,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:48:30,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:48:30,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:48:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:30,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 18:48:30,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:48:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 621 proven. 154 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-12-15 18:48:31,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:48:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 621 proven. 154 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-12-15 18:48:32,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260421713] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:48:32,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:48:32,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-12-15 18:48:32,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935346200] [2023-12-15 18:48:32,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:48:32,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:48:32,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:32,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:48:32,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:48:32,695 INFO L87 Difference]: Start difference. First operand 15171 states and 17281 transitions. Second operand has 5 states, 5 states have (on average 93.6) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:33,829 INFO L93 Difference]: Finished difference Result 33218 states and 37862 transitions. [2023-12-15 18:48:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 18:48:33,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 93.6) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 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 625 [2023-12-15 18:48:33,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:33,849 INFO L225 Difference]: With dead ends: 33218 [2023-12-15 18:48:33,849 INFO L226 Difference]: Without dead ends: 18048 [2023-12-15 18:48:33,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1254 GetRequests, 1249 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:48:33,860 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 470 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:33,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 57 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:48:33,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18048 states. [2023-12-15 18:48:34,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18048 to 15156. [2023-12-15 18:48:34,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15156 states, 15155 states have (on average 1.1211481359287363) internal successors, (16991), 15155 states have internal predecessors, (16991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:34,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15156 states to 15156 states and 16991 transitions. [2023-12-15 18:48:34,038 INFO L78 Accepts]: Start accepts. Automaton has 15156 states and 16991 transitions. Word has length 625 [2023-12-15 18:48:34,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:34,038 INFO L495 AbstractCegarLoop]: Abstraction has 15156 states and 16991 transitions. [2023-12-15 18:48:34,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.6) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:34,039 INFO L276 IsEmpty]: Start isEmpty. Operand 15156 states and 16991 transitions. [2023-12-15 18:48:34,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2023-12-15 18:48:34,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:34,049 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:34,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 18:48:34,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-15 18:48:34,254 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:34,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:34,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1007674061, now seen corresponding path program 1 times [2023-12-15 18:48:34,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:34,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55501688] [2023-12-15 18:48:34,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:34,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 847 proven. 240 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-12-15 18:48:35,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:35,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55501688] [2023-12-15 18:48:35,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55501688] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:48:35,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638140512] [2023-12-15 18:48:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:35,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:48:35,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:48:35,098 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:48:35,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:48:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:35,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:48:35,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:48:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 852 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-12-15 18:48:35,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:48:35,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638140512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:35,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:48:35,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-15 18:48:35,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045890275] [2023-12-15 18:48:35,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:35,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:35,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:35,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:35,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:48:35,355 INFO L87 Difference]: Start difference. First operand 15156 states and 16991 transitions. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:35,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:35,956 INFO L93 Difference]: Finished difference Result 30315 states and 33983 transitions. [2023-12-15 18:48:35,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:35,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 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 638 [2023-12-15 18:48:35,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:35,971 INFO L225 Difference]: With dead ends: 30315 [2023-12-15 18:48:35,971 INFO L226 Difference]: Without dead ends: 15344 [2023-12-15 18:48:35,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:48:35,980 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 112 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:35,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 343 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:48:35,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15344 states. [2023-12-15 18:48:36,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15344 to 15156. [2023-12-15 18:48:36,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15156 states, 15155 states have (on average 1.1038601121742) internal successors, (16729), 15155 states have internal predecessors, (16729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:36,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15156 states to 15156 states and 16729 transitions. [2023-12-15 18:48:36,171 INFO L78 Accepts]: Start accepts. Automaton has 15156 states and 16729 transitions. Word has length 638 [2023-12-15 18:48:36,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:36,171 INFO L495 AbstractCegarLoop]: Abstraction has 15156 states and 16729 transitions. [2023-12-15 18:48:36,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:36,172 INFO L276 IsEmpty]: Start isEmpty. Operand 15156 states and 16729 transitions. [2023-12-15 18:48:36,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2023-12-15 18:48:36,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:36,184 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:36,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 18:48:36,389 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,SelfDestructingSolverStorable22 [2023-12-15 18:48:36,389 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:36,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:36,390 INFO L85 PathProgramCache]: Analyzing trace with hash -232359710, now seen corresponding path program 1 times [2023-12-15 18:48:36,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:36,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245134083] [2023-12-15 18:48:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:36,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 876 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-12-15 18:48:36,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:36,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245134083] [2023-12-15 18:48:36,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245134083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:36,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:36,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:36,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521326698] [2023-12-15 18:48:36,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:36,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:36,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:36,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:36,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:36,672 INFO L87 Difference]: Start difference. First operand 15156 states and 16729 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:37,247 INFO L93 Difference]: Finished difference Result 32517 states and 35865 transitions. [2023-12-15 18:48:37,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:37,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 644 [2023-12-15 18:48:37,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:37,266 INFO L225 Difference]: With dead ends: 32517 [2023-12-15 18:48:37,266 INFO L226 Difference]: Without dead ends: 18284 [2023-12-15 18:48:37,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:37,276 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 119 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:37,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 112 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:48:37,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18284 states. [2023-12-15 18:48:37,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18284 to 16626. [2023-12-15 18:48:37,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16626 states, 16625 states have (on average 1.0974436090225563) internal successors, (18245), 16625 states have internal predecessors, (18245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:37,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16626 states to 16626 states and 18245 transitions. [2023-12-15 18:48:37,429 INFO L78 Accepts]: Start accepts. Automaton has 16626 states and 18245 transitions. Word has length 644 [2023-12-15 18:48:37,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:37,430 INFO L495 AbstractCegarLoop]: Abstraction has 16626 states and 18245 transitions. [2023-12-15 18:48:37,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:37,430 INFO L276 IsEmpty]: Start isEmpty. Operand 16626 states and 18245 transitions. [2023-12-15 18:48:37,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2023-12-15 18:48:37,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:37,443 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:37,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 18:48:37,444 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:37,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:37,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1500766177, now seen corresponding path program 1 times [2023-12-15 18:48:37,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:37,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158570356] [2023-12-15 18:48:37,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:37,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 1049 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2023-12-15 18:48:37,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:37,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158570356] [2023-12-15 18:48:37,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158570356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:37,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:37,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:37,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757314638] [2023-12-15 18:48:37,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:37,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:48:37,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:37,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:48:37,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:37,786 INFO L87 Difference]: Start difference. First operand 16626 states and 18245 transitions. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:38,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:38,603 INFO L93 Difference]: Finished difference Result 35100 states and 38540 transitions. [2023-12-15 18:48:38,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:48:38,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 679 [2023-12-15 18:48:38,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:38,620 INFO L225 Difference]: With dead ends: 35100 [2023-12-15 18:48:38,620 INFO L226 Difference]: Without dead ends: 19581 [2023-12-15 18:48:38,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:38,630 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 192 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:38,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 55 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:48:38,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19581 states. [2023-12-15 18:48:38,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19581 to 16626. [2023-12-15 18:48:38,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16626 states, 16625 states have (on average 1.0974436090225563) internal successors, (18245), 16625 states have internal predecessors, (18245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:38,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16626 states to 16626 states and 18245 transitions. [2023-12-15 18:48:38,773 INFO L78 Accepts]: Start accepts. Automaton has 16626 states and 18245 transitions. Word has length 679 [2023-12-15 18:48:38,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:38,773 INFO L495 AbstractCegarLoop]: Abstraction has 16626 states and 18245 transitions. [2023-12-15 18:48:38,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:38,774 INFO L276 IsEmpty]: Start isEmpty. Operand 16626 states and 18245 transitions. [2023-12-15 18:48:38,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2023-12-15 18:48:38,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:38,786 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 18:48:38,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 18:48:38,786 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:38,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:38,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1689452021, now seen corresponding path program 1 times [2023-12-15 18:48:38,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:38,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378849971] [2023-12-15 18:48:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:38,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 1034 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2023-12-15 18:48:39,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:39,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378849971] [2023-12-15 18:48:39,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378849971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:39,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:39,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:39,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134987254] [2023-12-15 18:48:39,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:39,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:39,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:39,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:39,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:39,014 INFO L87 Difference]: Start difference. First operand 16626 states and 18245 transitions. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:39,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:39,584 INFO L93 Difference]: Finished difference Result 32881 states and 36089 transitions. [2023-12-15 18:48:39,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:39,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 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 693 [2023-12-15 18:48:39,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:39,599 INFO L225 Difference]: With dead ends: 32881 [2023-12-15 18:48:39,599 INFO L226 Difference]: Without dead ends: 17178 [2023-12-15 18:48:39,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:39,609 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 102 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:39,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 132 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:48:39,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17178 states. [2023-12-15 18:48:39,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17178 to 15700. [2023-12-15 18:48:39,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15700 states, 15699 states have (on average 1.0945920122300783) internal successors, (17184), 15699 states have internal predecessors, (17184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:39,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15700 states to 15700 states and 17184 transitions. [2023-12-15 18:48:39,750 INFO L78 Accepts]: Start accepts. Automaton has 15700 states and 17184 transitions. Word has length 693 [2023-12-15 18:48:39,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:39,751 INFO L495 AbstractCegarLoop]: Abstraction has 15700 states and 17184 transitions. [2023-12-15 18:48:39,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:39,751 INFO L276 IsEmpty]: Start isEmpty. Operand 15700 states and 17184 transitions. [2023-12-15 18:48:39,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-12-15 18:48:39,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:39,763 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:39,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 18:48:39,763 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:39,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:39,764 INFO L85 PathProgramCache]: Analyzing trace with hash -401103085, now seen corresponding path program 1 times [2023-12-15 18:48:39,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:39,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575024541] [2023-12-15 18:48:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:39,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 954 proven. 0 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2023-12-15 18:48:40,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:40,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575024541] [2023-12-15 18:48:40,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575024541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:40,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:40,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:40,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220395746] [2023-12-15 18:48:40,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:40,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:48:40,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:40,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:48:40,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:40,301 INFO L87 Difference]: Start difference. First operand 15700 states and 17184 transitions. Second operand has 4 states, 4 states have (on average 115.5) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:41,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:41,201 INFO L93 Difference]: Finished difference Result 34721 states and 38038 transitions. [2023-12-15 18:48:41,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:48:41,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 115.5) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 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 724 [2023-12-15 18:48:41,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:41,219 INFO L225 Difference]: With dead ends: 34721 [2023-12-15 18:48:41,219 INFO L226 Difference]: Without dead ends: 19390 [2023-12-15 18:48:41,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:41,230 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 121 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:41,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 93 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:48:41,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19390 states. [2023-12-15 18:48:41,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19390 to 17731. [2023-12-15 18:48:41,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17731 states, 17730 states have (on average 1.0903553299492386) internal successors, (19332), 17730 states have internal predecessors, (19332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:41,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17731 states to 17731 states and 19332 transitions. [2023-12-15 18:48:41,384 INFO L78 Accepts]: Start accepts. Automaton has 17731 states and 19332 transitions. Word has length 724 [2023-12-15 18:48:41,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:41,384 INFO L495 AbstractCegarLoop]: Abstraction has 17731 states and 19332 transitions. [2023-12-15 18:48:41,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.5) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:41,385 INFO L276 IsEmpty]: Start isEmpty. Operand 17731 states and 19332 transitions. [2023-12-15 18:48:41,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2023-12-15 18:48:41,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:41,398 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:41,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-15 18:48:41,398 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:41,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:41,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1088702531, now seen corresponding path program 1 times [2023-12-15 18:48:41,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:41,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465692336] [2023-12-15 18:48:41,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:41,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1495 backedges. 903 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2023-12-15 18:48:41,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:41,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465692336] [2023-12-15 18:48:41,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465692336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:41,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:41,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:41,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533375145] [2023-12-15 18:48:41,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:41,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:41,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:41,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:41,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:41,668 INFO L87 Difference]: Start difference. First operand 17731 states and 19332 transitions. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:42,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:42,246 INFO L93 Difference]: Finished difference Result 35645 states and 38894 transitions. [2023-12-15 18:48:42,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:42,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 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 755 [2023-12-15 18:48:42,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:42,260 INFO L225 Difference]: With dead ends: 35645 [2023-12-15 18:48:42,261 INFO L226 Difference]: Without dead ends: 18653 [2023-12-15 18:48:42,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:42,269 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 195 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:42,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 335 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:48:42,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18653 states. [2023-12-15 18:48:42,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18653 to 14595. [2023-12-15 18:48:42,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14595 states, 14594 states have (on average 1.0861312868302042) internal successors, (15851), 14594 states have internal predecessors, (15851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14595 states to 14595 states and 15851 transitions. [2023-12-15 18:48:42,399 INFO L78 Accepts]: Start accepts. Automaton has 14595 states and 15851 transitions. Word has length 755 [2023-12-15 18:48:42,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:42,399 INFO L495 AbstractCegarLoop]: Abstraction has 14595 states and 15851 transitions. [2023-12-15 18:48:42,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:42,400 INFO L276 IsEmpty]: Start isEmpty. Operand 14595 states and 15851 transitions. [2023-12-15 18:48:42,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2023-12-15 18:48:42,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:42,409 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:42,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-15 18:48:42,410 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:42,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:42,410 INFO L85 PathProgramCache]: Analyzing trace with hash -60840719, now seen corresponding path program 1 times [2023-12-15 18:48:42,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:42,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265733960] [2023-12-15 18:48:42,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:42,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:43,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 648 proven. 554 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-15 18:48:43,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:43,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265733960] [2023-12-15 18:48:43,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265733960] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:48:43,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955691323] [2023-12-15 18:48:43,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:43,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:48:43,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:48:43,343 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 18:48:43,364 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 18:48:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:43,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:48:43,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:48:43,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 1027 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-12-15 18:48:43,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:48:43,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955691323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:43,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:48:43,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 18:48:43,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383190359] [2023-12-15 18:48:43,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:43,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:43,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:43,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:43,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:48:43,735 INFO L87 Difference]: Start difference. First operand 14595 states and 15851 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:44,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:44,195 INFO L93 Difference]: Finished difference Result 29198 states and 31739 transitions. [2023-12-15 18:48:44,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:44,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 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 762 [2023-12-15 18:48:44,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:44,206 INFO L225 Difference]: With dead ends: 29198 [2023-12-15 18:48:44,207 INFO L226 Difference]: Without dead ends: 15158 [2023-12-15 18:48:44,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:48:44,214 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 103 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:44,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 324 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:48:44,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15158 states. [2023-12-15 18:48:44,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15158 to 14781. [2023-12-15 18:48:44,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14781 states, 14780 states have (on average 1.0850473612990528) internal successors, (16037), 14780 states have internal predecessors, (16037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:44,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14781 states to 14781 states and 16037 transitions. [2023-12-15 18:48:44,325 INFO L78 Accepts]: Start accepts. Automaton has 14781 states and 16037 transitions. Word has length 762 [2023-12-15 18:48:44,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:44,325 INFO L495 AbstractCegarLoop]: Abstraction has 14781 states and 16037 transitions. [2023-12-15 18:48:44,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:44,325 INFO L276 IsEmpty]: Start isEmpty. Operand 14781 states and 16037 transitions. [2023-12-15 18:48:44,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2023-12-15 18:48:44,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:44,336 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 18:48:44,342 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 18:48:44,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-15 18:48:44,536 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:44,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:44,537 INFO L85 PathProgramCache]: Analyzing trace with hash 334186996, now seen corresponding path program 1 times [2023-12-15 18:48:44,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:44,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321233781] [2023-12-15 18:48:44,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:44,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 1317 proven. 0 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2023-12-15 18:48:45,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:45,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321233781] [2023-12-15 18:48:45,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321233781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:45,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:45,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:48:45,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016067866] [2023-12-15 18:48:45,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:45,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:48:45,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:45,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:48:45,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:45,278 INFO L87 Difference]: Start difference. First operand 14781 states and 16037 transitions. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:46,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:46,182 INFO L93 Difference]: Finished difference Result 29373 states and 31787 transitions. [2023-12-15 18:48:46,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:48:46,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 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 816 [2023-12-15 18:48:46,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:46,196 INFO L225 Difference]: With dead ends: 29373 [2023-12-15 18:48:46,196 INFO L226 Difference]: Without dead ends: 15147 [2023-12-15 18:48:46,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:46,205 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 187 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:46,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 49 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:48:46,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15147 states. [2023-12-15 18:48:46,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15147 to 12563. [2023-12-15 18:48:46,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12563 states, 12562 states have (on average 1.078968317146951) internal successors, (13554), 12562 states have internal predecessors, (13554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:46,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12563 states to 12563 states and 13554 transitions. [2023-12-15 18:48:46,350 INFO L78 Accepts]: Start accepts. Automaton has 12563 states and 13554 transitions. Word has length 816 [2023-12-15 18:48:46,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:46,350 INFO L495 AbstractCegarLoop]: Abstraction has 12563 states and 13554 transitions. [2023-12-15 18:48:46,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:46,350 INFO L276 IsEmpty]: Start isEmpty. Operand 12563 states and 13554 transitions. [2023-12-15 18:48:46,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2023-12-15 18:48:46,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:46,360 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:46,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-15 18:48:46,360 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:46,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:46,361 INFO L85 PathProgramCache]: Analyzing trace with hash -399207045, now seen corresponding path program 1 times [2023-12-15 18:48:46,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:46,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839701386] [2023-12-15 18:48:46,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:46,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1896 backedges. 1341 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2023-12-15 18:48:46,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:46,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839701386] [2023-12-15 18:48:46,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839701386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:46,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:46,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:46,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490437881] [2023-12-15 18:48:46,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:46,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:46,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:46,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:46,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:46,862 INFO L87 Difference]: Start difference. First operand 12563 states and 13554 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:47,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:47,342 INFO L93 Difference]: Finished difference Result 22361 states and 24133 transitions. [2023-12-15 18:48:47,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:47,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 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 828 [2023-12-15 18:48:47,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:47,343 INFO L225 Difference]: With dead ends: 22361 [2023-12-15 18:48:47,343 INFO L226 Difference]: Without dead ends: 0 [2023-12-15 18:48:47,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:47,350 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 99 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:47,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 318 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:48:47,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-15 18:48:47,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-15 18:48:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-15 18:48:47,351 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 828 [2023-12-15 18:48:47,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:47,351 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-15 18:48:47,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:47,351 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-15 18:48:47,351 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-15 18:48:47,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:48:47,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-15 18:48:47,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-15 18:49:05,861 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-102-18-14-13-12-15-11-9-11-12-11-8-11-8-11-8-11-8-11-8-11-7-11-7-9-7-7-7-6-4-5-4-3-4-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ∧-145-14-13-13-13-15-11-9-11-12-11-8-11-8-11-8-11-8-11-7-11-7-9-7-7-7-6-4-5-4-3-4-1 context. [2023-12-15 18:49:05,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-15 18:49:05,865 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:49:05,884 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-15 18:49:05,886 INFO L158 Benchmark]: Toolchain (without parser) took 58702.98ms. Allocated memory was 310.4MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 272.3MB in the beginning and 616.9MB in the end (delta: -344.7MB). Peak memory consumption was 684.6MB. Max. memory is 8.0GB. [2023-12-15 18:49:05,886 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 181.4MB. Free memory is still 129.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:49:05,886 INFO L158 Benchmark]: CACSL2BoogieTranslator took 516.72ms. Allocated memory is still 310.4MB. Free memory was 271.9MB in the beginning and 226.2MB in the end (delta: 45.7MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. [2023-12-15 18:49:05,886 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.77ms. Allocated memory is still 310.4MB. Free memory was 226.2MB in the beginning and 208.9MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-15 18:49:05,886 INFO L158 Benchmark]: Boogie Preprocessor took 135.25ms. Allocated memory is still 310.4MB. Free memory was 208.9MB in the beginning and 245.2MB in the end (delta: -36.2MB). Peak memory consumption was 16.7MB. Max. memory is 8.0GB. [2023-12-15 18:49:05,886 INFO L158 Benchmark]: RCFGBuilder took 1178.50ms. Allocated memory is still 310.4MB. Free memory was 245.2MB in the beginning and 249.4MB in the end (delta: -4.2MB). Peak memory consumption was 155.2MB. Max. memory is 8.0GB. [2023-12-15 18:49:05,887 INFO L158 Benchmark]: TraceAbstraction took 56770.68ms. Allocated memory was 310.4MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 248.8MB in the beginning and 616.9MB in the end (delta: -368.1MB). Peak memory consumption was 660.0MB. Max. memory is 8.0GB. [2023-12-15 18:49:05,887 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 181.4MB. Free memory is still 129.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 516.72ms. Allocated memory is still 310.4MB. Free memory was 271.9MB in the beginning and 226.2MB in the end (delta: 45.7MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 96.77ms. Allocated memory is still 310.4MB. Free memory was 226.2MB in the beginning and 208.9MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 135.25ms. Allocated memory is still 310.4MB. Free memory was 208.9MB in the beginning and 245.2MB in the end (delta: -36.2MB). Peak memory consumption was 16.7MB. Max. memory is 8.0GB. * RCFGBuilder took 1178.50ms. Allocated memory is still 310.4MB. Free memory was 245.2MB in the beginning and 249.4MB in the end (delta: -4.2MB). Peak memory consumption was 155.2MB. Max. memory is 8.0GB. * TraceAbstraction took 56770.68ms. Allocated memory was 310.4MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 248.8MB in the beginning and 616.9MB in the end (delta: -368.1MB). Peak memory consumption was 660.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-102-18-14-13-12-15-11-9-11-12-11-8-11-8-11-8-11-8-11-8-11-7-11-7-9-7-7-7-6-4-5-4-3-4-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-109-18-14-13-12-15-11-9-11-12-11-8-11-8-11-8-11-8-11-8-11-7-11-7-9-7-7-7-6-4-5-4-3-4-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown