/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:59:37,472 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:59:37,526 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 17:59:37,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:59:37,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:59:37,546 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:59:37,546 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:59:37,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:59:37,547 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:59:37,549 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:59:37,549 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:59:37,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:59:37,550 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:59:37,550 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:59:37,551 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:59:37,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:59:37,551 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:59:37,551 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:59:37,551 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:59:37,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:59:37,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:59:37,552 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:59:37,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:59:37,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:59:37,553 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:59:37,553 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:59:37,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:59:37,553 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:59:37,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:59:37,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:59:37,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:59:37,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:59:37,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:59:37,554 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:59:37,554 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:59:37,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:59:37,554 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:59:37,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:59:37,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:59:37,555 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:59:37,555 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:59:37,556 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:59:37,556 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:59:37,556 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:59:37,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:59:37,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:59:37,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:59:37,771 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:59:37,771 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:59:37,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label39.c [2023-12-20 17:59:38,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:59:39,262 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:59:39,263 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label39.c [2023-12-20 17:59:39,302 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d883b1eff/02964cf6c3614c5db0c4d05d52e4935d/FLAG3faca37ca [2023-12-20 17:59:39,316 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d883b1eff/02964cf6c3614c5db0c4d05d52e4935d [2023-12-20 17:59:39,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:59:39,320 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:59:39,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:59:39,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:59:39,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:59:39,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:59:39" (1/1) ... [2023-12-20 17:59:39,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235b651b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:59:39, skipping insertion in model container [2023-12-20 17:59:39,327 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:59:39" (1/1) ... [2023-12-20 17:59:39,475 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:59:39,695 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/Problem19_label39.c[4313,4326] [2023-12-20 17:59:40,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:59:40,597 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:59:40,614 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/Problem19_label39.c[4313,4326] [2023-12-20 17:59:41,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:59:41,191 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:59:41,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:59:41 WrapperNode [2023-12-20 17:59:41,193 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:59:41,194 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:59:41,194 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:59:41,194 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:59:41,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:59:41" (1/1) ... [2023-12-20 17:59:41,264 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:59:41" (1/1) ... [2023-12-20 17:59:41,819 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9431 [2023-12-20 17:59:41,819 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:59:41,819 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:59:41,819 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:59:41,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:59:41,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:59:41" (1/1) ... [2023-12-20 17:59:41,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:59:41" (1/1) ... [2023-12-20 17:59:42,049 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:59:41" (1/1) ... [2023-12-20 17:59:42,235 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]. [2023-12-20 17:59:42,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:59:41" (1/1) ... [2023-12-20 17:59:42,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:59:41" (1/1) ... [2023-12-20 17:59:42,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:59:41" (1/1) ... [2023-12-20 17:59:42,516 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:59:41" (1/1) ... [2023-12-20 17:59:42,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:59:41" (1/1) ... [2023-12-20 17:59:42,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:59:41" (1/1) ... [2023-12-20 17:59:42,717 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:59:42,718 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:59:42,789 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:59:42,789 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:59:42,790 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:59:41" (1/1) ... [2023-12-20 17:59:42,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:59:42,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:59:42,811 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) [2023-12-20 17:59:42,836 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 [2023-12-20 17:59:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:59:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:59:42,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:59:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:59:42,919 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:59:42,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:59:48,691 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:59:48,757 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:59:48,757 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:59:48,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:59:48 BoogieIcfgContainer [2023-12-20 17:59:48,757 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:59:48,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:59:48,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:59:48,761 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:59:48,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:59:39" (1/3) ... [2023-12-20 17:59:48,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f777f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:59:48, skipping insertion in model container [2023-12-20 17:59:48,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:59:41" (2/3) ... [2023-12-20 17:59:48,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f777f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:59:48, skipping insertion in model container [2023-12-20 17:59:48,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:59:48" (3/3) ... [2023-12-20 17:59:48,763 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label39.c [2023-12-20 17:59:48,775 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:59:48,775 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:59:48,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:59:48,832 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;@7acd70fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:59:48,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:59:48,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:59:48,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-20 17:59:48,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:59:48,845 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] [2023-12-20 17:59:48,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:59:48,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:59:48,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1144320332, now seen corresponding path program 1 times [2023-12-20 17:59:48,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:59:48,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330150140] [2023-12-20 17:59:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:59:48,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:59:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:59:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:59:48,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:59:48,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330150140] [2023-12-20 17:59:48,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330150140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:59:48,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:59:48,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:59:48,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324593011] [2023-12-20 17:59:48,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:59:48,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 17:59:48,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:59:48,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 17:59:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:59:48,982 INFO L87 Difference]: Start difference. First operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:59:49,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:59:49,075 INFO L93 Difference]: Finished difference Result 3371 states and 6405 transitions. [2023-12-20 17:59:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 17:59:49,093 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-12-20 17:59:49,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:59:49,107 INFO L225 Difference]: With dead ends: 3371 [2023-12-20 17:59:49,107 INFO L226 Difference]: Without dead ends: 1684 [2023-12-20 17:59:49,112 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 [2023-12-20 17:59:49,114 INFO L413 NwaCegarLoop]: 3138 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, 3138 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 [2023-12-20 17:59:49,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3138 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 17:59:49,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2023-12-20 17:59:49,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1684. [2023-12-20 17:59:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.8645276292335116) internal successors, (3138), 1683 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:59:49,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 3138 transitions. [2023-12-20 17:59:49,188 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 3138 transitions. Word has length 30 [2023-12-20 17:59:49,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:59:49,188 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 3138 transitions. [2023-12-20 17:59:49,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:59:49,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 3138 transitions. [2023-12-20 17:59:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-20 17:59:49,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:59:49,189 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] [2023-12-20 17:59:49,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:59:49,190 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:59:49,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:59:49,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2062823112, now seen corresponding path program 1 times [2023-12-20 17:59:49,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:59:49,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774403780] [2023-12-20 17:59:49,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:59:49,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:59:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:59:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:59:49,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:59:49,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774403780] [2023-12-20 17:59:49,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774403780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:59:49,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:59:49,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:59:49,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009976330] [2023-12-20 17:59:49,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:59:49,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:59:49,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:59:49,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:59:49,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:59:49,327 INFO L87 Difference]: Start difference. First operand 1684 states and 3138 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:59:55,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:59:55,057 INFO L93 Difference]: Finished difference Result 4789 states and 8995 transitions. [2023-12-20 17:59:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:59:55,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-12-20 17:59:55,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:59:55,070 INFO L225 Difference]: With dead ends: 4789 [2023-12-20 17:59:55,071 INFO L226 Difference]: Without dead ends: 3106 [2023-12-20 17:59:55,073 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 [2023-12-20 17:59:55,074 INFO L413 NwaCegarLoop]: 1212 mSDtfsCounter, 1518 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4579 mSolverCounterSat, 1050 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 5629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1050 IncrementalHoareTripleChecker+Valid, 4579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:59:55,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1390 Invalid, 5629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1050 Valid, 4579 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-20 17:59:55,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2023-12-20 17:59:55,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 3105. [2023-12-20 17:59:55,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3105 states, 3104 states have (on average 1.653028350515464) internal successors, (5131), 3104 states have internal predecessors, (5131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:59:55,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 5131 transitions. [2023-12-20 17:59:55,153 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 5131 transitions. Word has length 30 [2023-12-20 17:59:55,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:59:55,153 INFO L495 AbstractCegarLoop]: Abstraction has 3105 states and 5131 transitions. [2023-12-20 17:59:55,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:59:55,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 5131 transitions. [2023-12-20 17:59:55,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 17:59:55,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:59:55,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:59:55,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:59:55,156 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:59:55,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:59:55,157 INFO L85 PathProgramCache]: Analyzing trace with hash -116268125, now seen corresponding path program 1 times [2023-12-20 17:59:55,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:59:55,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459670353] [2023-12-20 17:59:55,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:59:55,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:59:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:59:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:59:55,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:59:55,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459670353] [2023-12-20 17:59:55,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459670353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:59:55,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:59:55,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:59:55,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983820635] [2023-12-20 17:59:55,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:59:55,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:59:55,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:59:55,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:59:55,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:59:55,499 INFO L87 Difference]: Start difference. First operand 3105 states and 5131 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:05,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:00:05,849 INFO L93 Difference]: Finished difference Result 10390 states and 16942 transitions. [2023-12-20 18:00:05,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 18:00:05,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-20 18:00:05,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:00:05,878 INFO L225 Difference]: With dead ends: 10390 [2023-12-20 18:00:05,878 INFO L226 Difference]: Without dead ends: 7286 [2023-12-20 18:00:05,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 18:00:05,885 INFO L413 NwaCegarLoop]: 1840 mSDtfsCounter, 4206 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 11122 mSolverCounterSat, 1405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4206 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 12527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1405 IncrementalHoareTripleChecker+Valid, 11122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-20 18:00:05,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4206 Valid, 2103 Invalid, 12527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1405 Valid, 11122 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2023-12-20 18:00:05,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7286 states. [2023-12-20 18:00:06,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7286 to 7235. [2023-12-20 18:00:06,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7235 states, 7234 states have (on average 1.521426596627039) internal successors, (11006), 7234 states have internal predecessors, (11006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:06,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7235 states to 7235 states and 11006 transitions. [2023-12-20 18:00:06,038 INFO L78 Accepts]: Start accepts. Automaton has 7235 states and 11006 transitions. Word has length 99 [2023-12-20 18:00:06,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:00:06,038 INFO L495 AbstractCegarLoop]: Abstraction has 7235 states and 11006 transitions. [2023-12-20 18:00:06,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:06,039 INFO L276 IsEmpty]: Start isEmpty. Operand 7235 states and 11006 transitions. [2023-12-20 18:00:06,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-12-20 18:00:06,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:00:06,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:00:06,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 18:00:06,041 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:00:06,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:00:06,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1159513822, now seen corresponding path program 1 times [2023-12-20 18:00:06,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:00:06,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151964883] [2023-12-20 18:00:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:00:06,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:00:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:00:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:00:06,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:00:06,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151964883] [2023-12-20 18:00:06,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151964883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:00:06,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:00:06,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:00:06,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917117741] [2023-12-20 18:00:06,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:00:06,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 18:00:06,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:00:06,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 18:00:06,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 18:00:06,536 INFO L87 Difference]: Start difference. First operand 7235 states and 11006 transitions. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:11,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:00:11,846 INFO L93 Difference]: Finished difference Result 13135 states and 20665 transitions. [2023-12-20 18:00:11,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 18:00:11,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 265 [2023-12-20 18:00:11,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:00:11,872 INFO L225 Difference]: With dead ends: 13135 [2023-12-20 18:00:11,872 INFO L226 Difference]: Without dead ends: 7235 [2023-12-20 18:00:11,881 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 [2023-12-20 18:00:11,887 INFO L413 NwaCegarLoop]: 1765 mSDtfsCounter, 1151 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 5713 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 5721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-20 18:00:11,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 1943 Invalid, 5721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5713 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-20 18:00:11,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7235 states. [2023-12-20 18:00:11,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7235 to 7235. [2023-12-20 18:00:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7235 states, 7234 states have (on average 1.520182471661598) internal successors, (10997), 7234 states have internal predecessors, (10997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:12,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7235 states to 7235 states and 10997 transitions. [2023-12-20 18:00:12,009 INFO L78 Accepts]: Start accepts. Automaton has 7235 states and 10997 transitions. Word has length 265 [2023-12-20 18:00:12,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:00:12,010 INFO L495 AbstractCegarLoop]: Abstraction has 7235 states and 10997 transitions. [2023-12-20 18:00:12,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:12,010 INFO L276 IsEmpty]: Start isEmpty. Operand 7235 states and 10997 transitions. [2023-12-20 18:00:12,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2023-12-20 18:00:12,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:00:12,018 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:00:12,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 18:00:12,018 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:00:12,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:00:12,019 INFO L85 PathProgramCache]: Analyzing trace with hash 727062551, now seen corresponding path program 1 times [2023-12-20 18:00:12,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:00:12,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803212176] [2023-12-20 18:00:12,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:00:12,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:00:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:00:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-20 18:00:12,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:00:12,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803212176] [2023-12-20 18:00:12,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803212176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:00:12,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:00:12,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 18:00:12,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746344160] [2023-12-20 18:00:12,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:00:12,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:00:12,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:00:12,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:00:12,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:00:12,435 INFO L87 Difference]: Start difference. First operand 7235 states and 10997 transitions. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 2 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:17,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:00:17,217 INFO L93 Difference]: Finished difference Result 15841 states and 24469 transitions. [2023-12-20 18:00:17,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:00:17,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 2 states have internal predecessors, (510), 0 states have call successors, (0), 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 582 [2023-12-20 18:00:17,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:00:17,251 INFO L225 Difference]: With dead ends: 15841 [2023-12-20 18:00:17,254 INFO L226 Difference]: Without dead ends: 9972 [2023-12-20 18:00:17,267 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 [2023-12-20 18:00:17,268 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 1396 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3928 mSolverCounterSat, 1671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 5599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1671 IncrementalHoareTripleChecker+Valid, 3928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-20 18:00:17,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 752 Invalid, 5599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1671 Valid, 3928 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-20 18:00:17,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9972 states. [2023-12-20 18:00:17,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9972 to 9968. [2023-12-20 18:00:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9968 states, 9967 states have (on average 1.3900872880505668) internal successors, (13855), 9967 states have internal predecessors, (13855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:17,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9968 states to 9968 states and 13855 transitions. [2023-12-20 18:00:17,524 INFO L78 Accepts]: Start accepts. Automaton has 9968 states and 13855 transitions. Word has length 582 [2023-12-20 18:00:17,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:00:17,525 INFO L495 AbstractCegarLoop]: Abstraction has 9968 states and 13855 transitions. [2023-12-20 18:00:17,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 2 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:17,525 INFO L276 IsEmpty]: Start isEmpty. Operand 9968 states and 13855 transitions. [2023-12-20 18:00:17,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2023-12-20 18:00:17,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:00:17,533 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:00:17,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 18:00:17,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:00:17,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:00:17,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2088330881, now seen corresponding path program 1 times [2023-12-20 18:00:17,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:00:17,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203231034] [2023-12-20 18:00:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:00:17,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:00:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:00:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-12-20 18:00:17,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:00:17,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203231034] [2023-12-20 18:00:17,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203231034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:00:17,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:00:17,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 18:00:17,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675558536] [2023-12-20 18:00:17,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:00:17,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:00:17,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:00:17,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:00:17,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:00:17,920 INFO L87 Difference]: Start difference. First operand 9968 states and 13855 transitions. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 2 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:23,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:00:23,198 INFO L93 Difference]: Finished difference Result 26950 states and 38549 transitions. [2023-12-20 18:00:23,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:00:23,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 2 states have internal predecessors, (510), 0 states have call successors, (0), 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 606 [2023-12-20 18:00:23,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:00:23,231 INFO L225 Difference]: With dead ends: 26950 [2023-12-20 18:00:23,231 INFO L226 Difference]: Without dead ends: 18348 [2023-12-20 18:00:23,244 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 [2023-12-20 18:00:23,245 INFO L413 NwaCegarLoop]: 1328 mSDtfsCounter, 1361 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 4186 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 5616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-20 18:00:23,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 1598 Invalid, 5616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4186 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-20 18:00:23,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18348 states. [2023-12-20 18:00:23,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18348 to 18333. [2023-12-20 18:00:23,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18333 states, 18332 states have (on average 1.2809840715688414) internal successors, (23483), 18332 states have internal predecessors, (23483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:23,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18333 states to 18333 states and 23483 transitions. [2023-12-20 18:00:23,492 INFO L78 Accepts]: Start accepts. Automaton has 18333 states and 23483 transitions. Word has length 606 [2023-12-20 18:00:23,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:00:23,492 INFO L495 AbstractCegarLoop]: Abstraction has 18333 states and 23483 transitions. [2023-12-20 18:00:23,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 2 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:23,493 INFO L276 IsEmpty]: Start isEmpty. Operand 18333 states and 23483 transitions. [2023-12-20 18:00:23,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2023-12-20 18:00:23,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:00:23,500 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:00:23,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 18:00:23,500 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:00:23,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:00:23,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1789049420, now seen corresponding path program 1 times [2023-12-20 18:00:23,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:00:23,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977069344] [2023-12-20 18:00:23,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:00:23,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:00:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:00:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 18:00:24,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:00:24,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977069344] [2023-12-20 18:00:24,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977069344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:00:24,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:00:24,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 18:00:24,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620984481] [2023-12-20 18:00:24,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:00:24,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 18:00:24,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:00:24,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 18:00:24,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 18:00:24,283 INFO L87 Difference]: Start difference. First operand 18333 states and 23483 transitions. Second operand has 5 states, 5 states have (on average 124.2) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:31,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:00:31,224 INFO L93 Difference]: Finished difference Result 42163 states and 53382 transitions. [2023-12-20 18:00:31,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 18:00:31,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 124.2) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 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 [2023-12-20 18:00:31,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:00:31,265 INFO L225 Difference]: With dead ends: 42163 [2023-12-20 18:00:31,266 INFO L226 Difference]: Without dead ends: 25170 [2023-12-20 18:00:31,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 18:00:31,286 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 2256 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 8683 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 9095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 8683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-20 18:00:31,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2256 Valid, 1864 Invalid, 9095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 8683 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-20 18:00:31,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25170 states. [2023-12-20 18:00:31,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25170 to 25165. [2023-12-20 18:00:31,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25165 states, 25164 states have (on average 1.2144333174376092) internal successors, (30560), 25164 states have internal predecessors, (30560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:31,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25165 states to 25165 states and 30560 transitions. [2023-12-20 18:00:31,569 INFO L78 Accepts]: Start accepts. Automaton has 25165 states and 30560 transitions. Word has length 621 [2023-12-20 18:00:31,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:00:31,570 INFO L495 AbstractCegarLoop]: Abstraction has 25165 states and 30560 transitions. [2023-12-20 18:00:31,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.2) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:31,570 INFO L276 IsEmpty]: Start isEmpty. Operand 25165 states and 30560 transitions. [2023-12-20 18:00:31,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2023-12-20 18:00:31,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:00:31,574 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:00:31,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 18:00:31,575 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:00:31,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:00:31,575 INFO L85 PathProgramCache]: Analyzing trace with hash 573409516, now seen corresponding path program 1 times [2023-12-20 18:00:31,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:00:31,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638869973] [2023-12-20 18:00:31,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:00:31,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:00:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:00:32,378 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-20 18:00:32,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:00:32,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638869973] [2023-12-20 18:00:32,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638869973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:00:32,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:00:32,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:00:32,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899741435] [2023-12-20 18:00:32,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:00:32,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:00:32,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:00:32,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:00:32,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:00:32,380 INFO L87 Difference]: Start difference. First operand 25165 states and 30560 transitions. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:00:37,491 INFO L93 Difference]: Finished difference Result 47619 states and 60783 transitions. [2023-12-20 18:00:37,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:00:37,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 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 666 [2023-12-20 18:00:37,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:00:37,536 INFO L225 Difference]: With dead ends: 47619 [2023-12-20 18:00:37,536 INFO L226 Difference]: Without dead ends: 30652 [2023-12-20 18:00:37,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:00:37,557 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 1827 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4018 mSolverCounterSat, 2017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 6035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2017 IncrementalHoareTripleChecker+Valid, 4018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-20 18:00:37,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1827 Valid, 770 Invalid, 6035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2017 Valid, 4018 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-20 18:00:37,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30652 states. [2023-12-20 18:00:37,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30652 to 29280. [2023-12-20 18:00:37,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29280 states, 29279 states have (on average 1.2541070391748352) internal successors, (36719), 29279 states have internal predecessors, (36719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:37,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29280 states to 29280 states and 36719 transitions. [2023-12-20 18:00:37,872 INFO L78 Accepts]: Start accepts. Automaton has 29280 states and 36719 transitions. Word has length 666 [2023-12-20 18:00:37,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:00:37,873 INFO L495 AbstractCegarLoop]: Abstraction has 29280 states and 36719 transitions. [2023-12-20 18:00:37,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:37,873 INFO L276 IsEmpty]: Start isEmpty. Operand 29280 states and 36719 transitions. [2023-12-20 18:00:37,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2023-12-20 18:00:37,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:00:37,883 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:00:37,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 18:00:37,883 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:00:37,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:00:37,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2036567942, now seen corresponding path program 1 times [2023-12-20 18:00:37,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:00:37,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279704278] [2023-12-20 18:00:37,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:00:37,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:00:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:00:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 449 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-12-20 18:00:38,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:00:38,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279704278] [2023-12-20 18:00:38,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279704278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:00:38,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:00:38,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 18:00:38,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159814870] [2023-12-20 18:00:38,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:00:38,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 18:00:38,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:00:38,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 18:00:38,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 18:00:38,375 INFO L87 Difference]: Start difference. First operand 29280 states and 36719 transitions. Second operand has 4 states, 4 states have (on average 161.25) internal successors, (645), 4 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:48,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:00:48,268 INFO L93 Difference]: Finished difference Result 103745 states and 131351 transitions. [2023-12-20 18:00:48,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 18:00:48,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 161.25) internal successors, (645), 4 states have internal predecessors, (645), 0 states have call successors, (0), 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 881 [2023-12-20 18:00:48,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:00:48,360 INFO L225 Difference]: With dead ends: 103745 [2023-12-20 18:00:48,360 INFO L226 Difference]: Without dead ends: 75831 [2023-12-20 18:00:48,385 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 [2023-12-20 18:00:48,386 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 3320 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 9233 mSolverCounterSat, 2671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3320 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 11904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2671 IncrementalHoareTripleChecker+Valid, 9233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-12-20 18:00:48,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3320 Valid, 1112 Invalid, 11904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2671 Valid, 9233 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-12-20 18:00:48,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75831 states. [2023-12-20 18:00:49,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75831 to 74392. [2023-12-20 18:00:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74392 states, 74391 states have (on average 1.1997956742079015) internal successors, (89254), 74391 states have internal predecessors, (89254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:49,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74392 states to 74392 states and 89254 transitions. [2023-12-20 18:00:49,180 INFO L78 Accepts]: Start accepts. Automaton has 74392 states and 89254 transitions. Word has length 881 [2023-12-20 18:00:49,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:00:49,182 INFO L495 AbstractCegarLoop]: Abstraction has 74392 states and 89254 transitions. [2023-12-20 18:00:49,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.25) internal successors, (645), 4 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:49,182 INFO L276 IsEmpty]: Start isEmpty. Operand 74392 states and 89254 transitions. [2023-12-20 18:00:49,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2023-12-20 18:00:49,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:00:49,193 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:00:49,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 18:00:49,193 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:00:49,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:00:49,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1182177618, now seen corresponding path program 1 times [2023-12-20 18:00:49,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:00:49,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611212171] [2023-12-20 18:00:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:00:49,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:00:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:00:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 365 proven. 313 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-20 18:00:51,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:00:51,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611212171] [2023-12-20 18:00:51,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611212171] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 18:00:51,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040109845] [2023-12-20 18:00:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:00:51,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:00:51,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:00:51,434 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) [2023-12-20 18:00:51,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 18:00:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:00:51,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 18:00:51,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 18:00:51,790 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2023-12-20 18:00:51,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 18:00:51,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040109845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:00:51,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 18:00:51,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-20 18:00:51,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425741185] [2023-12-20 18:00:51,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:00:51,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:00:51,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:00:51,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:00:51,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-20 18:00:51,794 INFO L87 Difference]: Start difference. First operand 74392 states and 89254 transitions. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:57,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:00:57,157 INFO L93 Difference]: Finished difference Result 152878 states and 186658 transitions. [2023-12-20 18:00:57,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:00:57,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 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 890 [2023-12-20 18:00:57,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:00:57,285 INFO L225 Difference]: With dead ends: 152878 [2023-12-20 18:00:57,285 INFO L226 Difference]: Without dead ends: 92144 [2023-12-20 18:00:57,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 891 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-20 18:00:57,331 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 1662 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4658 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 5666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 4658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-20 18:00:57,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 762 Invalid, 5666 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1008 Valid, 4658 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-20 18:00:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92144 states. [2023-12-20 18:00:58,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92144 to 90774. [2023-12-20 18:00:58,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90774 states, 90773 states have (on average 1.1880845625901975) internal successors, (107846), 90773 states have internal predecessors, (107846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90774 states to 90774 states and 107846 transitions. [2023-12-20 18:00:58,642 INFO L78 Accepts]: Start accepts. Automaton has 90774 states and 107846 transitions. Word has length 890 [2023-12-20 18:00:58,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:00:58,642 INFO L495 AbstractCegarLoop]: Abstraction has 90774 states and 107846 transitions. [2023-12-20 18:00:58,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:00:58,642 INFO L276 IsEmpty]: Start isEmpty. Operand 90774 states and 107846 transitions. [2023-12-20 18:00:58,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2023-12-20 18:00:58,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:00:58,651 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:00:58,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 18:00:58,857 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,SelfDestructingSolverStorable9 [2023-12-20 18:00:58,857 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:00:58,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:00:58,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1794823133, now seen corresponding path program 1 times [2023-12-20 18:00:58,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:00:58,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336623209] [2023-12-20 18:00:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:00:58,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:00:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:01:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2023-12-20 18:01:00,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:01:00,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336623209] [2023-12-20 18:01:00,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336623209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:01:00,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:01:00,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:01:00,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876105949] [2023-12-20 18:01:00,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:01:00,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:01:00,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:01:00,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:01:00,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:01:00,668 INFO L87 Difference]: Start difference. First operand 90774 states and 107846 transitions. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:06,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:01:06,842 INFO L93 Difference]: Finished difference Result 223954 states and 266472 transitions. [2023-12-20 18:01:06,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:01:06,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 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 890 [2023-12-20 18:01:06,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:01:07,023 INFO L225 Difference]: With dead ends: 223954 [2023-12-20 18:01:07,023 INFO L226 Difference]: Without dead ends: 134546 [2023-12-20 18:01:07,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:01:07,065 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 1684 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4231 mSolverCounterSat, 2218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 6449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2218 IncrementalHoareTripleChecker+Valid, 4231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-20 18:01:07,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1684 Valid, 668 Invalid, 6449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2218 Valid, 4231 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-20 18:01:07,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134546 states. [2023-12-20 18:01:08,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134546 to 128997. [2023-12-20 18:01:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128997 states, 128996 states have (on average 1.1885329777667524) internal successors, (153316), 128996 states have internal predecessors, (153316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128997 states to 128997 states and 153316 transitions. [2023-12-20 18:01:08,593 INFO L78 Accepts]: Start accepts. Automaton has 128997 states and 153316 transitions. Word has length 890 [2023-12-20 18:01:08,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:01:08,594 INFO L495 AbstractCegarLoop]: Abstraction has 128997 states and 153316 transitions. [2023-12-20 18:01:08,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand 128997 states and 153316 transitions. [2023-12-20 18:01:08,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2023-12-20 18:01:08,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:01:08,604 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:01:08,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 18:01:08,604 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:01:08,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:01:08,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1435580864, now seen corresponding path program 1 times [2023-12-20 18:01:08,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:01:08,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210608731] [2023-12-20 18:01:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:01:08,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:01:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:01:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2023-12-20 18:01:09,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:01:09,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210608731] [2023-12-20 18:01:09,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210608731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:01:09,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:01:09,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:01:09,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679716729] [2023-12-20 18:01:09,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:01:09,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:01:09,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:01:09,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:01:09,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:01:09,602 INFO L87 Difference]: Start difference. First operand 128997 states and 153316 transitions. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:16,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:01:16,806 INFO L93 Difference]: Finished difference Result 329093 states and 397226 transitions. [2023-12-20 18:01:16,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:01:16,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 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 915 [2023-12-20 18:01:16,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:01:17,110 INFO L225 Difference]: With dead ends: 329093 [2023-12-20 18:01:17,111 INFO L226 Difference]: Without dead ends: 201462 [2023-12-20 18:01:17,159 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 [2023-12-20 18:01:17,160 INFO L413 NwaCegarLoop]: 3028 mSDtfsCounter, 1503 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 5450 mSolverCounterSat, 780 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 6230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 780 IncrementalHoareTripleChecker+Valid, 5450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-20 18:01:17,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 3221 Invalid, 6230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [780 Valid, 5450 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-20 18:01:17,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201462 states. [2023-12-20 18:01:19,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201462 to 191846. [2023-12-20 18:01:19,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191846 states, 191845 states have (on average 1.1726862831973728) internal successors, (224974), 191845 states have internal predecessors, (224974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:19,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191846 states to 191846 states and 224974 transitions. [2023-12-20 18:01:19,610 INFO L78 Accepts]: Start accepts. Automaton has 191846 states and 224974 transitions. Word has length 915 [2023-12-20 18:01:19,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:01:19,611 INFO L495 AbstractCegarLoop]: Abstraction has 191846 states and 224974 transitions. [2023-12-20 18:01:19,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:19,611 INFO L276 IsEmpty]: Start isEmpty. Operand 191846 states and 224974 transitions. [2023-12-20 18:01:19,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2023-12-20 18:01:19,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:01:19,625 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:01:19,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 18:01:19,625 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:01:19,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:01:19,626 INFO L85 PathProgramCache]: Analyzing trace with hash 196960459, now seen corresponding path program 1 times [2023-12-20 18:01:19,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:01:19,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79195302] [2023-12-20 18:01:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:01:19,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:01:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:01:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 673 proven. 313 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-12-20 18:01:22,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:01:22,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79195302] [2023-12-20 18:01:22,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79195302] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 18:01:22,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490450919] [2023-12-20 18:01:22,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:01:22,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:01:22,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:01:22,138 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) [2023-12-20 18:01:22,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 18:01:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:01:22,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 18:01:22,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 18:01:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 863 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-20 18:01:22,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 18:01:22,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490450919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:01:22,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 18:01:22,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-20 18:01:22,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715688823] [2023-12-20 18:01:22,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:01:22,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:01:22,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:01:22,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:01:22,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-20 18:01:22,798 INFO L87 Difference]: Start difference. First operand 191846 states and 224974 transitions. Second operand has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:29,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:01:29,702 INFO L93 Difference]: Finished difference Result 484677 states and 575190 transitions. [2023-12-20 18:01:29,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:01:29,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 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 1001 [2023-12-20 18:01:29,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:01:30,173 INFO L225 Difference]: With dead ends: 484677 [2023-12-20 18:01:30,173 INFO L226 Difference]: Without dead ends: 310584 [2023-12-20 18:01:30,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 1002 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-20 18:01:30,260 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 2356 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4037 mSolverCounterSat, 1460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2356 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 5497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1460 IncrementalHoareTripleChecker+Valid, 4037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-20 18:01:30,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2356 Valid, 787 Invalid, 5497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1460 Valid, 4037 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-20 18:01:30,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310584 states. [2023-12-20 18:01:33,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310584 to 269632. [2023-12-20 18:01:33,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269632 states, 269631 states have (on average 1.1769010239920483) internal successors, (317329), 269631 states have internal predecessors, (317329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:33,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269632 states to 269632 states and 317329 transitions. [2023-12-20 18:01:33,830 INFO L78 Accepts]: Start accepts. Automaton has 269632 states and 317329 transitions. Word has length 1001 [2023-12-20 18:01:33,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:01:33,831 INFO L495 AbstractCegarLoop]: Abstraction has 269632 states and 317329 transitions. [2023-12-20 18:01:33,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:33,831 INFO L276 IsEmpty]: Start isEmpty. Operand 269632 states and 317329 transitions. [2023-12-20 18:01:33,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1152 [2023-12-20 18:01:33,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:01:33,854 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:01:33,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 18:01:34,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-20 18:01:34,060 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:01:34,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:01:34,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1087722259, now seen corresponding path program 1 times [2023-12-20 18:01:34,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:01:34,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863251528] [2023-12-20 18:01:34,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:01:34,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:01:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:01:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1479 backedges. 1093 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2023-12-20 18:01:35,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:01:35,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863251528] [2023-12-20 18:01:35,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863251528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:01:35,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:01:35,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:01:35,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126624303] [2023-12-20 18:01:35,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:01:35,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:01:35,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:01:35,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:01:35,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:01:35,429 INFO L87 Difference]: Start difference. First operand 269632 states and 317329 transitions. Second operand has 3 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:42,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:01:42,696 INFO L93 Difference]: Finished difference Result 607599 states and 716619 transitions. [2023-12-20 18:01:42,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:01:42,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 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 1151 [2023-12-20 18:01:42,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:01:43,187 INFO L225 Difference]: With dead ends: 607599 [2023-12-20 18:01:43,188 INFO L226 Difference]: Without dead ends: 339333 [2023-12-20 18:01:43,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:01:43,280 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 1617 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 4206 mSolverCounterSat, 1965 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 6171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1965 IncrementalHoareTripleChecker+Valid, 4206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-20 18:01:43,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 941 Invalid, 6171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1965 Valid, 4206 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-20 18:01:43,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339333 states. [2023-12-20 18:01:46,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339333 to 326965. [2023-12-20 18:01:47,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326965 states, 326964 states have (on average 1.1771754688589569) internal successors, (384894), 326964 states have internal predecessors, (384894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:47,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326965 states to 326965 states and 384894 transitions. [2023-12-20 18:01:47,851 INFO L78 Accepts]: Start accepts. Automaton has 326965 states and 384894 transitions. Word has length 1151 [2023-12-20 18:01:47,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:01:47,852 INFO L495 AbstractCegarLoop]: Abstraction has 326965 states and 384894 transitions. [2023-12-20 18:01:47,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:47,852 INFO L276 IsEmpty]: Start isEmpty. Operand 326965 states and 384894 transitions. [2023-12-20 18:01:47,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1176 [2023-12-20 18:01:47,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:01:47,880 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:01:47,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 18:01:47,880 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:01:47,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:01:47,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2003621575, now seen corresponding path program 1 times [2023-12-20 18:01:47,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:01:47,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125913873] [2023-12-20 18:01:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:01:47,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:01:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:01:48,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1402 backedges. 972 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2023-12-20 18:01:48,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:01:48,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125913873] [2023-12-20 18:01:48,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125913873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:01:48,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:01:48,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:01:48,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079178797] [2023-12-20 18:01:48,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:01:48,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:01:48,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:01:48,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:01:48,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:01:48,534 INFO L87 Difference]: Start difference. First operand 326965 states and 384894 transitions. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:01:55,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:01:55,317 INFO L93 Difference]: Finished difference Result 651203 states and 767043 transitions. [2023-12-20 18:01:55,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:01:55,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 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 1175 [2023-12-20 18:01:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:01:56,071 INFO L225 Difference]: With dead ends: 651203 [2023-12-20 18:01:56,071 INFO L226 Difference]: Without dead ends: 325604 [2023-12-20 18:01:56,159 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 [2023-12-20 18:01:56,160 INFO L413 NwaCegarLoop]: 2839 mSDtfsCounter, 1262 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4396 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 4790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 4396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-20 18:01:56,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 3027 Invalid, 4790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 4396 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-20 18:01:56,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325604 states. [2023-12-20 18:01:59,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325604 to 305120. [2023-12-20 18:01:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305120 states, 305119 states have (on average 1.1701237877680513) internal successors, (357027), 305119 states have internal predecessors, (357027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:00,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305120 states to 305120 states and 357027 transitions. [2023-12-20 18:02:00,807 INFO L78 Accepts]: Start accepts. Automaton has 305120 states and 357027 transitions. Word has length 1175 [2023-12-20 18:02:00,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:02:00,808 INFO L495 AbstractCegarLoop]: Abstraction has 305120 states and 357027 transitions. [2023-12-20 18:02:00,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:00,808 INFO L276 IsEmpty]: Start isEmpty. Operand 305120 states and 357027 transitions. [2023-12-20 18:02:00,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1195 [2023-12-20 18:02:00,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:02:00,839 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:02:00,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 18:02:00,839 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:02:00,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:02:00,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1495829660, now seen corresponding path program 1 times [2023-12-20 18:02:00,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:02:00,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815288840] [2023-12-20 18:02:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:02:00,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:02:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:02:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 695 proven. 75 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-20 18:02:02,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:02:02,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815288840] [2023-12-20 18:02:02,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815288840] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 18:02:02,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402141391] [2023-12-20 18:02:02,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:02:02,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:02:02,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 18:02:02,822 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) [2023-12-20 18:02:02,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 18:02:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:02:03,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 18:02:03,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 18:02:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 708 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-12-20 18:02:03,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 18:02:03,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402141391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:02:03,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 18:02:03,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-20 18:02:03,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852749847] [2023-12-20 18:02:03,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:02:03,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:02:03,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:02:03,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:02:03,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-20 18:02:03,748 INFO L87 Difference]: Start difference. First operand 305120 states and 357027 transitions. Second operand has 3 states, 3 states have (on average 286.3333333333333) internal successors, (859), 2 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:10,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:02:10,846 INFO L93 Difference]: Finished difference Result 681339 states and 795641 transitions. [2023-12-20 18:02:10,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:02:10,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 286.3333333333333) internal successors, (859), 2 states have internal predecessors, (859), 0 states have call successors, (0), 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 1194 [2023-12-20 18:02:10,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:02:11,412 INFO L225 Difference]: With dead ends: 681339 [2023-12-20 18:02:11,412 INFO L226 Difference]: Without dead ends: 377585 [2023-12-20 18:02:11,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1200 GetRequests, 1195 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-20 18:02:11,512 INFO L413 NwaCegarLoop]: 1335 mSDtfsCounter, 1135 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4234 mSolverCounterSat, 1528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 5762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1528 IncrementalHoareTripleChecker+Valid, 4234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-20 18:02:11,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 1458 Invalid, 5762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1528 Valid, 4234 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-20 18:02:11,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377585 states. [2023-12-20 18:02:15,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377585 to 374736. [2023-12-20 18:02:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374736 states, 374735 states have (on average 1.148905226359961) internal successors, (430535), 374735 states have internal predecessors, (430535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:16,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374736 states to 374736 states and 430535 transitions. [2023-12-20 18:02:16,467 INFO L78 Accepts]: Start accepts. Automaton has 374736 states and 430535 transitions. Word has length 1194 [2023-12-20 18:02:16,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:02:16,467 INFO L495 AbstractCegarLoop]: Abstraction has 374736 states and 430535 transitions. [2023-12-20 18:02:16,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.3333333333333) internal successors, (859), 2 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:16,468 INFO L276 IsEmpty]: Start isEmpty. Operand 374736 states and 430535 transitions. [2023-12-20 18:02:16,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1392 [2023-12-20 18:02:16,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:02:16,505 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:02:16,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 18:02:16,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 18:02:16,707 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:02:16,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:02:16,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1326593363, now seen corresponding path program 1 times [2023-12-20 18:02:16,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:02:16,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096091518] [2023-12-20 18:02:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:02:16,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:02:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:02:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 1407 proven. 0 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2023-12-20 18:02:17,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:02:17,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096091518] [2023-12-20 18:02:17,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096091518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:02:17,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:02:17,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 18:02:17,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300836726] [2023-12-20 18:02:17,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:02:17,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 18:02:17,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:02:17,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 18:02:17,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 18:02:17,637 INFO L87 Difference]: Start difference. First operand 374736 states and 430535 transitions. Second operand has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:28,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:02:28,933 INFO L93 Difference]: Finished difference Result 940568 states and 1090079 transitions. [2023-12-20 18:02:28,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 18:02:28,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 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 1391 [2023-12-20 18:02:28,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:02:30,148 INFO L225 Difference]: With dead ends: 940568 [2023-12-20 18:02:30,148 INFO L226 Difference]: Without dead ends: 584949 [2023-12-20 18:02:30,489 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 [2023-12-20 18:02:30,490 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 3196 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6158 mSolverCounterSat, 2777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3196 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 8935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2777 IncrementalHoareTripleChecker+Valid, 6158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-20 18:02:30,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3196 Valid, 976 Invalid, 8935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2777 Valid, 6158 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-12-20 18:02:31,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584949 states. [2023-12-20 18:02:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584949 to 563100. [2023-12-20 18:02:37,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563100 states, 563099 states have (on average 1.1171197249506748) internal successors, (629049), 563099 states have internal predecessors, (629049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:38,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563100 states to 563100 states and 629049 transitions. [2023-12-20 18:02:38,865 INFO L78 Accepts]: Start accepts. Automaton has 563100 states and 629049 transitions. Word has length 1391 [2023-12-20 18:02:38,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 18:02:38,866 INFO L495 AbstractCegarLoop]: Abstraction has 563100 states and 629049 transitions. [2023-12-20 18:02:38,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:38,866 INFO L276 IsEmpty]: Start isEmpty. Operand 563100 states and 629049 transitions. [2023-12-20 18:02:38,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1672 [2023-12-20 18:02:38,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 18:02:38,938 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, 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, 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, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 18:02:38,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 18:02:38,938 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 18:02:38,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 18:02:38,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2065190457, now seen corresponding path program 1 times [2023-12-20 18:02:38,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 18:02:38,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970191169] [2023-12-20 18:02:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 18:02:38,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 18:02:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 18:02:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3286 backedges. 2457 proven. 0 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2023-12-20 18:02:40,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 18:02:40,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970191169] [2023-12-20 18:02:40,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970191169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 18:02:40,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 18:02:40,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 18:02:40,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774317257] [2023-12-20 18:02:40,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 18:02:40,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 18:02:40,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 18:02:40,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 18:02:40,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 18:02:40,041 INFO L87 Difference]: Start difference. First operand 563100 states and 629049 transitions. Second operand has 3 states, 3 states have (on average 368.3333333333333) internal successors, (1105), 3 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 18:02:47,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 18:02:47,716 INFO L93 Difference]: Finished difference Result 1130291 states and 1261818 transitions. [2023-12-20 18:02:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 18:02:47,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 368.3333333333333) internal successors, (1105), 3 states have internal predecessors, (1105), 0 states have call successors, (0), 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 1671 [2023-12-20 18:02:47,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 18:02:48,575 INFO L225 Difference]: With dead ends: 1130291 [2023-12-20 18:02:48,575 INFO L226 Difference]: Without dead ends: 568557 [2023-12-20 18:02:48,731 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 [2023-12-20 18:02:48,731 INFO L413 NwaCegarLoop]: 2845 mSDtfsCounter, 1374 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 3646 mSolverCounterSat, 1239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 4885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1239 IncrementalHoareTripleChecker+Valid, 3646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-20 18:02:48,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1374 Valid, 3015 Invalid, 4885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1239 Valid, 3646 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-20 18:02:49,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568557 states.