/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 03:38:40,514 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 03:38:40,572 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 03:38:40,575 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 03:38:40,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 03:38:40,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 03:38:40,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 03:38:40,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 03:38:40,609 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 03:38:40,612 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 03:38:40,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 03:38:40,613 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 03:38:40,614 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 03:38:40,615 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 03:38:40,615 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 03:38:40,615 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 03:38:40,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 03:38:40,615 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 03:38:40,615 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 03:38:40,616 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 03:38:40,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 03:38:40,617 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 03:38:40,617 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 03:38:40,617 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 03:38:40,617 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 03:38:40,617 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 03:38:40,618 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 03:38:40,618 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 03:38:40,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 03:38:40,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 03:38:40,619 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 03:38:40,619 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 03:38:40,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 03:38:40,619 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 03:38:40,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 03:38:40,620 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 03:38:40,620 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 03:38:40,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 03:38:40,620 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 03:38:40,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 03:38:40,620 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 03:38:40,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 03:38:40,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 03:38:40,621 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 03:38:40,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 03:38:40,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 03:38:40,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 03:38:40,845 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 03:38:40,845 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 03:38:40,846 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label14.c [2023-12-19 03:38:41,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 03:38:42,278 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 03:38:42,279 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label14.c [2023-12-19 03:38:42,307 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0729da92/f11daa495cd54676a7e5dffd25d375be/FLAG0bfd00b12 [2023-12-19 03:38:42,320 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0729da92/f11daa495cd54676a7e5dffd25d375be [2023-12-19 03:38:42,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 03:38:42,323 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 03:38:42,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 03:38:42,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 03:38:42,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 03:38:42,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:38:42" (1/1) ... [2023-12-19 03:38:42,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@437dc83c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:42, skipping insertion in model container [2023-12-19 03:38:42,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:38:42" (1/1) ... [2023-12-19 03:38:42,434 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 03:38:42,782 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/Problem12_label14.c[6042,6055] [2023-12-19 03:38:43,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 03:38:43,519 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 03:38:43,545 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/Problem12_label14.c[6042,6055] [2023-12-19 03:38:43,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 03:38:43,858 INFO L206 MainTranslator]: Completed translation [2023-12-19 03:38:43,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:43 WrapperNode [2023-12-19 03:38:43,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 03:38:43,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 03:38:43,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 03:38:43,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 03:38:43,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:43" (1/1) ... [2023-12-19 03:38:43,916 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:43" (1/1) ... [2023-12-19 03:38:44,147 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2023-12-19 03:38:44,148 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 03:38:44,148 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 03:38:44,148 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 03:38:44,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 03:38:44,157 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:43" (1/1) ... [2023-12-19 03:38:44,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:43" (1/1) ... [2023-12-19 03:38:44,191 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:43" (1/1) ... [2023-12-19 03:38:44,353 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]. [2023-12-19 03:38:44,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:43" (1/1) ... [2023-12-19 03:38:44,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:43" (1/1) ... [2023-12-19 03:38:44,454 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:43" (1/1) ... [2023-12-19 03:38:44,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:43" (1/1) ... [2023-12-19 03:38:44,499 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:43" (1/1) ... [2023-12-19 03:38:44,517 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:43" (1/1) ... [2023-12-19 03:38:44,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 03:38:44,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 03:38:44,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 03:38:44,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 03:38:44,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:43" (1/1) ... [2023-12-19 03:38:44,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 03:38:44,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:38:44,670 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) [2023-12-19 03:38:44,682 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 [2023-12-19 03:38:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 03:38:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 03:38:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 03:38:44,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 03:38:44,754 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 03:38:44,756 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 03:38:47,835 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 03:38:47,876 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 03:38:47,876 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 03:38:47,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:38:47 BoogieIcfgContainer [2023-12-19 03:38:47,877 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 03:38:47,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 03:38:47,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 03:38:47,881 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 03:38:47,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:38:42" (1/3) ... [2023-12-19 03:38:47,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9d93cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:38:47, skipping insertion in model container [2023-12-19 03:38:47,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:38:43" (2/3) ... [2023-12-19 03:38:47,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9d93cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:38:47, skipping insertion in model container [2023-12-19 03:38:47,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:38:47" (3/3) ... [2023-12-19 03:38:47,882 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label14.c [2023-12-19 03:38:47,893 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 03:38:47,894 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 03:38:47,932 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 03:38:47,936 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;@27abb632, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 03:38:47,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 03:38:47,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:47,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-19 03:38:47,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:38:47,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:38:47,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:38:47,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:38:47,952 INFO L85 PathProgramCache]: Analyzing trace with hash -689574888, now seen corresponding path program 1 times [2023-12-19 03:38:47,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:38:47,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711241565] [2023-12-19 03:38:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:38:47,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:38:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:38:48,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:38:48,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:38:48,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711241565] [2023-12-19 03:38:48,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711241565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:38:48,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:38:48,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:38:48,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249047077] [2023-12-19 03:38:48,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:38:48,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 03:38:48,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:38:48,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 03:38:48,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 03:38:48,200 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 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 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:48,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:38:48,276 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-12-19 03:38:48,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 03:38:48,279 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-19 03:38:48,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:38:48,294 INFO L225 Difference]: With dead ends: 1511 [2023-12-19 03:38:48,294 INFO L226 Difference]: Without dead ends: 754 [2023-12-19 03:38:48,297 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 [2023-12-19 03:38:48,299 INFO L413 NwaCegarLoop]: 1438 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, 1438 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 [2023-12-19 03:38:48,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 03:38:48,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-19 03:38:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-12-19 03:38:48,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-12-19 03:38:48,366 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 47 [2023-12-19 03:38:48,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:38:48,366 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-12-19 03:38:48,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-12-19 03:38:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-19 03:38:48,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:38:48,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:38:48,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 03:38:48,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:38:48,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:38:48,369 INFO L85 PathProgramCache]: Analyzing trace with hash 123998545, now seen corresponding path program 1 times [2023-12-19 03:38:48,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:38:48,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460289525] [2023-12-19 03:38:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:38:48,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:38:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:38:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:38:48,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:38:48,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460289525] [2023-12-19 03:38:48,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460289525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:38:48,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:38:48,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:38:48,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439161487] [2023-12-19 03:38:48,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:38:48,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:38:48,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:38:48,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:38:48,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:38:48,645 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:53,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:38:53,807 INFO L93 Difference]: Finished difference Result 3009 states and 5747 transitions. [2023-12-19 03:38:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:38:53,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-19 03:38:53,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:38:53,816 INFO L225 Difference]: With dead ends: 3009 [2023-12-19 03:38:53,816 INFO L226 Difference]: Without dead ends: 2256 [2023-12-19 03:38:53,818 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 [2023-12-19 03:38:53,819 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 2203 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5519 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2203 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 6619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:38:53,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2203 Valid, 709 Invalid, 6619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5519 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-19 03:38:53,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2023-12-19 03:38:53,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2256. [2023-12-19 03:38:53,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.5804878048780489) internal successors, (3564), 2255 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 3564 transitions. [2023-12-19 03:38:53,878 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 3564 transitions. Word has length 47 [2023-12-19 03:38:53,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:38:53,879 INFO L495 AbstractCegarLoop]: Abstraction has 2256 states and 3564 transitions. [2023-12-19 03:38:53,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:53,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 3564 transitions. [2023-12-19 03:38:53,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-19 03:38:53,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:38:53,882 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:38:53,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 03:38:53,882 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:38:53,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:38:53,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1076581314, now seen corresponding path program 1 times [2023-12-19 03:38:53,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:38:53,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938925893] [2023-12-19 03:38:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:38:53,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:38:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:38:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:38:54,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:38:54,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938925893] [2023-12-19 03:38:54,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938925893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:38:54,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:38:54,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:38:54,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089527532] [2023-12-19 03:38:54,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:38:54,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:38:54,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:38:54,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:38:54,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:38:54,167 INFO L87 Difference]: Start difference. First operand 2256 states and 3564 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:57,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:38:57,547 INFO L93 Difference]: Finished difference Result 5299 states and 9212 transitions. [2023-12-19 03:38:57,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:38:57,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2023-12-19 03:38:57,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:38:57,560 INFO L225 Difference]: With dead ends: 5299 [2023-12-19 03:38:57,561 INFO L226 Difference]: Without dead ends: 3758 [2023-12-19 03:38:57,563 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 [2023-12-19 03:38:57,566 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 702 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3108 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 3837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:38:57,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 705 Invalid, 3837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3108 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 03:38:57,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2023-12-19 03:38:57,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3758. [2023-12-19 03:38:57,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 3757 states have (on average 1.368645195634815) internal successors, (5142), 3757 states have internal predecessors, (5142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:57,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5142 transitions. [2023-12-19 03:38:57,635 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5142 transitions. Word has length 118 [2023-12-19 03:38:57,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:38:57,639 INFO L495 AbstractCegarLoop]: Abstraction has 3758 states and 5142 transitions. [2023-12-19 03:38:57,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:38:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5142 transitions. [2023-12-19 03:38:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-19 03:38:57,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:38:57,648 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:38:57,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 03:38:57,648 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:38:57,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:38:57,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1563697079, now seen corresponding path program 1 times [2023-12-19 03:38:57,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:38:57,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649830295] [2023-12-19 03:38:57,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:38:57,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:38:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:38:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 03:38:58,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:38:58,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649830295] [2023-12-19 03:38:58,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649830295] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:38:58,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143129105] [2023-12-19 03:38:58,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:38:58,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:38:58,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:38:58,044 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) [2023-12-19 03:38:58,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 03:38:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:38:58,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:38:58,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:38:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-19 03:38:58,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:38:58,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143129105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:38:58,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:38:58,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-19 03:38:58,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343607429] [2023-12-19 03:38:58,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:38:58,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:38:58,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:38:58,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:38:58,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:38:58,389 INFO L87 Difference]: Start difference. First operand 3758 states and 5142 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:00,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:00,754 INFO L93 Difference]: Finished difference Result 9768 states and 13911 transitions. [2023-12-19 03:39:00,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:00,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 192 [2023-12-19 03:39:00,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:00,772 INFO L225 Difference]: With dead ends: 9768 [2023-12-19 03:39:00,772 INFO L226 Difference]: Without dead ends: 6762 [2023-12-19 03:39:00,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:39:00,784 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 669 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 2782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:00,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 400 Invalid, 2782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 03:39:00,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2023-12-19 03:39:00,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6762. [2023-12-19 03:39:00,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6762 states, 6761 states have (on average 1.2873835231474633) internal successors, (8704), 6761 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 8704 transitions. [2023-12-19 03:39:00,886 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 8704 transitions. Word has length 192 [2023-12-19 03:39:00,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:00,887 INFO L495 AbstractCegarLoop]: Abstraction has 6762 states and 8704 transitions. [2023-12-19 03:39:00,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:00,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 8704 transitions. [2023-12-19 03:39:00,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-12-19 03:39:00,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:00,890 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:00,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 03:39:01,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:39:01,117 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:01,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:01,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1062952192, now seen corresponding path program 1 times [2023-12-19 03:39:01,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:01,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833162032] [2023-12-19 03:39:01,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:01,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-19 03:39:01,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:01,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833162032] [2023-12-19 03:39:01,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833162032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:01,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:01,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:01,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581897262] [2023-12-19 03:39:01,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:01,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:39:01,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:01,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:39:01,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:39:01,422 INFO L87 Difference]: Start difference. First operand 6762 states and 8704 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:04,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:04,667 INFO L93 Difference]: Finished difference Result 15815 states and 21392 transitions. [2023-12-19 03:39:04,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:39:04,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 259 [2023-12-19 03:39:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:04,707 INFO L225 Difference]: With dead ends: 15815 [2023-12-19 03:39:04,708 INFO L226 Difference]: Without dead ends: 9768 [2023-12-19 03:39:04,749 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 [2023-12-19 03:39:04,749 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 775 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3910 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 4452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:04,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 489 Invalid, 4452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3910 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 03:39:04,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9768 states. [2023-12-19 03:39:04,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9768 to 9766. [2023-12-19 03:39:04,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.273015873015873) internal successors, (12431), 9765 states have internal predecessors, (12431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 12431 transitions. [2023-12-19 03:39:04,888 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 12431 transitions. Word has length 259 [2023-12-19 03:39:04,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:04,889 INFO L495 AbstractCegarLoop]: Abstraction has 9766 states and 12431 transitions. [2023-12-19 03:39:04,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:04,889 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 12431 transitions. [2023-12-19 03:39:04,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-19 03:39:04,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:04,891 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:04,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 03:39:04,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:04,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:04,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1832839527, now seen corresponding path program 1 times [2023-12-19 03:39:04,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:04,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472837104] [2023-12-19 03:39:04,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:04,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-19 03:39:05,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:05,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472837104] [2023-12-19 03:39:05,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472837104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:05,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:05,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:05,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581057450] [2023-12-19 03:39:05,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:05,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:05,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:05,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:05,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:05,055 INFO L87 Difference]: Start difference. First operand 9766 states and 12431 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:07,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:07,821 INFO L93 Difference]: Finished difference Result 23286 states and 30483 transitions. [2023-12-19 03:39:07,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:07,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 277 [2023-12-19 03:39:07,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:07,853 INFO L225 Difference]: With dead ends: 23286 [2023-12-19 03:39:07,853 INFO L226 Difference]: Without dead ends: 14272 [2023-12-19 03:39:07,864 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 [2023-12-19 03:39:07,865 INFO L413 NwaCegarLoop]: 1384 mSDtfsCounter, 709 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2197 mSolverCounterSat, 678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 2197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:07,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 1391 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [678 Valid, 2197 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 03:39:07,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14272 states. [2023-12-19 03:39:07,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14272 to 14272. [2023-12-19 03:39:08,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14272 states, 14271 states have (on average 1.23453156751454) internal successors, (17618), 14271 states have internal predecessors, (17618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:08,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14272 states to 14272 states and 17618 transitions. [2023-12-19 03:39:08,027 INFO L78 Accepts]: Start accepts. Automaton has 14272 states and 17618 transitions. Word has length 277 [2023-12-19 03:39:08,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:08,027 INFO L495 AbstractCegarLoop]: Abstraction has 14272 states and 17618 transitions. [2023-12-19 03:39:08,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:08,028 INFO L276 IsEmpty]: Start isEmpty. Operand 14272 states and 17618 transitions. [2023-12-19 03:39:08,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-12-19 03:39:08,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:08,032 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:08,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 03:39:08,032 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:08,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:08,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1295770942, now seen corresponding path program 1 times [2023-12-19 03:39:08,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:08,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143305996] [2023-12-19 03:39:08,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:08,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-12-19 03:39:08,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:08,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143305996] [2023-12-19 03:39:08,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143305996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:08,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:08,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:39:08,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597790432] [2023-12-19 03:39:08,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:08,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:08,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:08,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:08,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:08,187 INFO L87 Difference]: Start difference. First operand 14272 states and 17618 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:11,018 INFO L93 Difference]: Finished difference Result 39057 states and 48926 transitions. [2023-12-19 03:39:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:11,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 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 310 [2023-12-19 03:39:11,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:11,060 INFO L225 Difference]: With dead ends: 39057 [2023-12-19 03:39:11,060 INFO L226 Difference]: Without dead ends: 25537 [2023-12-19 03:39:11,077 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 [2023-12-19 03:39:11,078 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 620 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 2816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:11,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 595 Invalid, 2816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 03:39:11,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25537 states. [2023-12-19 03:39:11,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25537 to 23284. [2023-12-19 03:39:11,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23284 states, 23283 states have (on average 1.1806897736545978) internal successors, (27490), 23283 states have internal predecessors, (27490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:11,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23284 states to 23284 states and 27490 transitions. [2023-12-19 03:39:11,572 INFO L78 Accepts]: Start accepts. Automaton has 23284 states and 27490 transitions. Word has length 310 [2023-12-19 03:39:11,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:11,572 INFO L495 AbstractCegarLoop]: Abstraction has 23284 states and 27490 transitions. [2023-12-19 03:39:11,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand 23284 states and 27490 transitions. [2023-12-19 03:39:11,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-12-19 03:39:11,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:11,579 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:39:11,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 03:39:11,579 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:11,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:11,580 INFO L85 PathProgramCache]: Analyzing trace with hash 781168151, now seen corresponding path program 1 times [2023-12-19 03:39:11,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:11,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779423422] [2023-12-19 03:39:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:11,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-19 03:39:12,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:12,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779423422] [2023-12-19 03:39:12,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779423422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:12,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:12,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:12,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277514374] [2023-12-19 03:39:12,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:12,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:12,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:12,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:12,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:12,318 INFO L87 Difference]: Start difference. First operand 23284 states and 27490 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:15,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:15,226 INFO L93 Difference]: Finished difference Result 57081 states and 68683 transitions. [2023-12-19 03:39:15,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:15,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 389 [2023-12-19 03:39:15,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:15,275 INFO L225 Difference]: With dead ends: 57081 [2023-12-19 03:39:15,275 INFO L226 Difference]: Without dead ends: 34549 [2023-12-19 03:39:15,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:15,291 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 772 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2030 mSolverCounterSat, 1074 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 3104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1074 IncrementalHoareTripleChecker+Valid, 2030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:15,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 137 Invalid, 3104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1074 Valid, 2030 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 03:39:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34549 states. [2023-12-19 03:39:15,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34549 to 32296. [2023-12-19 03:39:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32296 states, 32295 states have (on average 1.2027558445579811) internal successors, (38843), 32295 states have internal predecessors, (38843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:15,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32296 states to 32296 states and 38843 transitions. [2023-12-19 03:39:15,658 INFO L78 Accepts]: Start accepts. Automaton has 32296 states and 38843 transitions. Word has length 389 [2023-12-19 03:39:15,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:15,658 INFO L495 AbstractCegarLoop]: Abstraction has 32296 states and 38843 transitions. [2023-12-19 03:39:15,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:15,659 INFO L276 IsEmpty]: Start isEmpty. Operand 32296 states and 38843 transitions. [2023-12-19 03:39:15,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-12-19 03:39:15,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:15,666 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 03:39:15,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 03:39:15,667 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:15,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:15,667 INFO L85 PathProgramCache]: Analyzing trace with hash 280665235, now seen corresponding path program 1 times [2023-12-19 03:39:15,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:15,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229008753] [2023-12-19 03:39:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:15,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 478 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-19 03:39:15,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:15,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229008753] [2023-12-19 03:39:15,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229008753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:15,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:15,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:15,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142352401] [2023-12-19 03:39:15,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:15,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:15,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:15,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:15,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:15,839 INFO L87 Difference]: Start difference. First operand 32296 states and 38843 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:18,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:18,735 INFO L93 Difference]: Finished difference Result 79611 states and 95768 transitions. [2023-12-19 03:39:18,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:18,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 406 [2023-12-19 03:39:18,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:18,799 INFO L225 Difference]: With dead ends: 79611 [2023-12-19 03:39:18,800 INFO L226 Difference]: Without dead ends: 48067 [2023-12-19 03:39:18,818 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 [2023-12-19 03:39:18,820 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 733 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 3027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:18,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 171 Invalid, 3027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 03:39:19,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48067 states. [2023-12-19 03:39:19,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48067 to 45063. [2023-12-19 03:39:19,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45063 states, 45062 states have (on average 1.1978163419288979) internal successors, (53976), 45062 states have internal predecessors, (53976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45063 states to 45063 states and 53976 transitions. [2023-12-19 03:39:19,563 INFO L78 Accepts]: Start accepts. Automaton has 45063 states and 53976 transitions. Word has length 406 [2023-12-19 03:39:19,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:19,563 INFO L495 AbstractCegarLoop]: Abstraction has 45063 states and 53976 transitions. [2023-12-19 03:39:19,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:19,564 INFO L276 IsEmpty]: Start isEmpty. Operand 45063 states and 53976 transitions. [2023-12-19 03:39:19,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-19 03:39:19,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:19,573 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:19,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 03:39:19,573 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:19,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:19,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1053707397, now seen corresponding path program 1 times [2023-12-19 03:39:19,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:19,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770810015] [2023-12-19 03:39:19,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:19,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 478 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-19 03:39:19,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:19,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770810015] [2023-12-19 03:39:19,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770810015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:19,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:19,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:19,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378574666] [2023-12-19 03:39:19,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:19,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:19,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:19,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:19,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:19,958 INFO L87 Difference]: Start difference. First operand 45063 states and 53976 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:22,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:22,638 INFO L93 Difference]: Finished difference Result 90876 states and 108729 transitions. [2023-12-19 03:39:22,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:22,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 426 [2023-12-19 03:39:22,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:22,695 INFO L225 Difference]: With dead ends: 90876 [2023-12-19 03:39:22,695 INFO L226 Difference]: Without dead ends: 46565 [2023-12-19 03:39:22,795 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 [2023-12-19 03:39:22,796 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 829 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 2622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:22,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1002 Invalid, 2622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [541 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 03:39:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46565 states. [2023-12-19 03:39:23,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46565 to 44312. [2023-12-19 03:39:23,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44312 states, 44311 states have (on average 1.1580194534088601) internal successors, (51313), 44311 states have internal predecessors, (51313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44312 states to 44312 states and 51313 transitions. [2023-12-19 03:39:23,294 INFO L78 Accepts]: Start accepts. Automaton has 44312 states and 51313 transitions. Word has length 426 [2023-12-19 03:39:23,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:23,296 INFO L495 AbstractCegarLoop]: Abstraction has 44312 states and 51313 transitions. [2023-12-19 03:39:23,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:23,296 INFO L276 IsEmpty]: Start isEmpty. Operand 44312 states and 51313 transitions. [2023-12-19 03:39:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 03:39:23,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:23,331 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:23,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 03:39:23,332 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:23,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:23,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1033635561, now seen corresponding path program 1 times [2023-12-19 03:39:23,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:23,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879358545] [2023-12-19 03:39:23,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:23,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 473 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-19 03:39:23,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:23,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879358545] [2023-12-19 03:39:23,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879358545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:23,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:23,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:23,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319950039] [2023-12-19 03:39:23,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:23,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:23,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:23,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:23,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:23,684 INFO L87 Difference]: Start difference. First operand 44312 states and 51313 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:26,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:26,333 INFO L93 Difference]: Finished difference Result 91627 states and 105845 transitions. [2023-12-19 03:39:26,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:26,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 439 [2023-12-19 03:39:26,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:26,390 INFO L225 Difference]: With dead ends: 91627 [2023-12-19 03:39:26,390 INFO L226 Difference]: Without dead ends: 48067 [2023-12-19 03:39:26,413 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 [2023-12-19 03:39:26,413 INFO L413 NwaCegarLoop]: 1255 mSDtfsCounter, 649 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2626 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 2924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 2626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:26,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1262 Invalid, 2924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 2626 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 03:39:26,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48067 states. [2023-12-19 03:39:26,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48067 to 46565. [2023-12-19 03:39:26,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46565 states, 46564 states have (on average 1.14371617558629) internal successors, (53256), 46564 states have internal predecessors, (53256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:26,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46565 states to 46565 states and 53256 transitions. [2023-12-19 03:39:26,928 INFO L78 Accepts]: Start accepts. Automaton has 46565 states and 53256 transitions. Word has length 439 [2023-12-19 03:39:26,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:26,929 INFO L495 AbstractCegarLoop]: Abstraction has 46565 states and 53256 transitions. [2023-12-19 03:39:26,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:26,930 INFO L276 IsEmpty]: Start isEmpty. Operand 46565 states and 53256 transitions. [2023-12-19 03:39:26,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-19 03:39:26,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:26,959 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:26,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 03:39:26,960 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:26,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:26,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1990278431, now seen corresponding path program 1 times [2023-12-19 03:39:26,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:26,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179805719] [2023-12-19 03:39:26,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:26,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:27,698 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-19 03:39:27,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:27,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179805719] [2023-12-19 03:39:27,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179805719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:27,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:27,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:27,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241081478] [2023-12-19 03:39:27,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:27,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:27,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:27,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:27,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:27,700 INFO L87 Difference]: Start difference. First operand 46565 states and 53256 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:30,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:30,248 INFO L93 Difference]: Finished difference Result 102892 states and 117133 transitions. [2023-12-19 03:39:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:30,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 443 [2023-12-19 03:39:30,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:30,313 INFO L225 Difference]: With dead ends: 102892 [2023-12-19 03:39:30,313 INFO L226 Difference]: Without dead ends: 57079 [2023-12-19 03:39:30,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:30,342 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 803 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:30,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 895 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2130 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 03:39:30,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57079 states. [2023-12-19 03:39:30,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57079 to 51822. [2023-12-19 03:39:31,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51822 states, 51821 states have (on average 1.118407595376392) internal successors, (57957), 51821 states have internal predecessors, (57957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:31,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51822 states to 51822 states and 57957 transitions. [2023-12-19 03:39:31,069 INFO L78 Accepts]: Start accepts. Automaton has 51822 states and 57957 transitions. Word has length 443 [2023-12-19 03:39:31,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:31,095 INFO L495 AbstractCegarLoop]: Abstraction has 51822 states and 57957 transitions. [2023-12-19 03:39:31,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:31,095 INFO L276 IsEmpty]: Start isEmpty. Operand 51822 states and 57957 transitions. [2023-12-19 03:39:31,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-12-19 03:39:31,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:31,101 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:31,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 03:39:31,101 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:31,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:31,101 INFO L85 PathProgramCache]: Analyzing trace with hash 284926905, now seen corresponding path program 1 times [2023-12-19 03:39:31,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:31,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645078032] [2023-12-19 03:39:31,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:31,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-12-19 03:39:31,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:31,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645078032] [2023-12-19 03:39:31,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645078032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:31,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:31,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:31,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653687999] [2023-12-19 03:39:31,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:31,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:31,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:31,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:31,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:31,538 INFO L87 Difference]: Start difference. First operand 51822 states and 57957 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:34,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:34,653 INFO L93 Difference]: Finished difference Result 137438 states and 154207 transitions. [2023-12-19 03:39:34,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:34,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 446 [2023-12-19 03:39:34,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:34,760 INFO L225 Difference]: With dead ends: 137438 [2023-12-19 03:39:34,760 INFO L226 Difference]: Without dead ends: 86368 [2023-12-19 03:39:34,772 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 [2023-12-19 03:39:34,773 INFO L413 NwaCegarLoop]: 1304 mSDtfsCounter, 684 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:34,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1311 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 03:39:34,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86368 states. [2023-12-19 03:39:35,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86368 to 75854. [2023-12-19 03:39:35,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75854 states, 75853 states have (on average 1.1025668068500916) internal successors, (83633), 75853 states have internal predecessors, (83633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75854 states to 75854 states and 83633 transitions. [2023-12-19 03:39:35,696 INFO L78 Accepts]: Start accepts. Automaton has 75854 states and 83633 transitions. Word has length 446 [2023-12-19 03:39:35,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:35,697 INFO L495 AbstractCegarLoop]: Abstraction has 75854 states and 83633 transitions. [2023-12-19 03:39:35,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:35,697 INFO L276 IsEmpty]: Start isEmpty. Operand 75854 states and 83633 transitions. [2023-12-19 03:39:35,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2023-12-19 03:39:35,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:35,705 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:39:35,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 03:39:35,705 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:35,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:35,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1170883454, now seen corresponding path program 1 times [2023-12-19 03:39:35,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:35,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832034030] [2023-12-19 03:39:35,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:35,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-19 03:39:36,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:36,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832034030] [2023-12-19 03:39:36,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832034030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:36,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:36,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:36,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017129212] [2023-12-19 03:39:36,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:36,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:36,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:36,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:36,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:36,115 INFO L87 Difference]: Start difference. First operand 75854 states and 83633 transitions. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:38,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:38,786 INFO L93 Difference]: Finished difference Result 153209 states and 168771 transitions. [2023-12-19 03:39:38,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:38,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 487 [2023-12-19 03:39:38,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:38,913 INFO L225 Difference]: With dead ends: 153209 [2023-12-19 03:39:38,913 INFO L226 Difference]: Without dead ends: 78107 [2023-12-19 03:39:38,975 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 [2023-12-19 03:39:38,976 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 680 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:38,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 212 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 03:39:39,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78107 states. [2023-12-19 03:39:39,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78107 to 72850. [2023-12-19 03:39:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72850 states, 72849 states have (on average 1.0855468160166921) internal successors, (79081), 72849 states have internal predecessors, (79081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:39,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72850 states to 72850 states and 79081 transitions. [2023-12-19 03:39:39,859 INFO L78 Accepts]: Start accepts. Automaton has 72850 states and 79081 transitions. Word has length 487 [2023-12-19 03:39:39,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:39,859 INFO L495 AbstractCegarLoop]: Abstraction has 72850 states and 79081 transitions. [2023-12-19 03:39:39,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:39,859 INFO L276 IsEmpty]: Start isEmpty. Operand 72850 states and 79081 transitions. [2023-12-19 03:39:39,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-19 03:39:39,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:39,867 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:39,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 03:39:39,867 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:39,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:39,867 INFO L85 PathProgramCache]: Analyzing trace with hash -594975905, now seen corresponding path program 1 times [2023-12-19 03:39:39,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:39,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812474809] [2023-12-19 03:39:39,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:39,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:40,246 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-19 03:39:40,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:40,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812474809] [2023-12-19 03:39:40,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812474809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:40,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:40,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:40,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025351057] [2023-12-19 03:39:40,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:40,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:40,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:40,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:40,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:40,250 INFO L87 Difference]: Start difference. First operand 72850 states and 79081 transitions. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:43,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:43,343 INFO L93 Difference]: Finished difference Result 144948 states and 157405 transitions. [2023-12-19 03:39:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:43,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 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 509 [2023-12-19 03:39:43,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:43,442 INFO L225 Difference]: With dead ends: 144948 [2023-12-19 03:39:43,442 INFO L226 Difference]: Without dead ends: 72850 [2023-12-19 03:39:43,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:43,487 INFO L413 NwaCegarLoop]: 1266 mSDtfsCounter, 567 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 2617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:43,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 1273 Invalid, 2617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 03:39:43,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72850 states. [2023-12-19 03:39:44,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72850 to 69095. [2023-12-19 03:39:44,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69095 states, 69094 states have (on average 1.0611919993052943) internal successors, (73322), 69094 states have internal predecessors, (73322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:44,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69095 states to 69095 states and 73322 transitions. [2023-12-19 03:39:44,401 INFO L78 Accepts]: Start accepts. Automaton has 69095 states and 73322 transitions. Word has length 509 [2023-12-19 03:39:44,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:44,401 INFO L495 AbstractCegarLoop]: Abstraction has 69095 states and 73322 transitions. [2023-12-19 03:39:44,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:44,401 INFO L276 IsEmpty]: Start isEmpty. Operand 69095 states and 73322 transitions. [2023-12-19 03:39:44,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-19 03:39:44,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:44,409 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:44,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 03:39:44,409 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:44,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:44,410 INFO L85 PathProgramCache]: Analyzing trace with hash -979796733, now seen corresponding path program 1 times [2023-12-19 03:39:44,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:44,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761342653] [2023-12-19 03:39:44,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:44,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:44,980 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-12-19 03:39:44,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:44,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761342653] [2023-12-19 03:39:44,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761342653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:44,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:44,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:44,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110891985] [2023-12-19 03:39:44,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:44,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:44,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:44,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:44,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:44,982 INFO L87 Difference]: Start difference. First operand 69095 states and 73322 transitions. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:47,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:47,929 INFO L93 Difference]: Finished difference Result 160719 states and 171237 transitions. [2023-12-19 03:39:47,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:47,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 524 [2023-12-19 03:39:47,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:48,037 INFO L225 Difference]: With dead ends: 160719 [2023-12-19 03:39:48,038 INFO L226 Difference]: Without dead ends: 92376 [2023-12-19 03:39:48,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:48,072 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 672 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:48,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 107 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 2167 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:39:48,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92376 states. [2023-12-19 03:39:49,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92376 to 91625. [2023-12-19 03:39:49,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91625 states, 91624 states have (on average 1.0609774731511394) internal successors, (97211), 91624 states have internal predecessors, (97211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:49,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91625 states to 91625 states and 97211 transitions. [2023-12-19 03:39:49,239 INFO L78 Accepts]: Start accepts. Automaton has 91625 states and 97211 transitions. Word has length 524 [2023-12-19 03:39:49,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:49,240 INFO L495 AbstractCegarLoop]: Abstraction has 91625 states and 97211 transitions. [2023-12-19 03:39:49,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:49,240 INFO L276 IsEmpty]: Start isEmpty. Operand 91625 states and 97211 transitions. [2023-12-19 03:39:49,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-19 03:39:49,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:49,251 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:49,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 03:39:49,251 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:49,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:49,253 INFO L85 PathProgramCache]: Analyzing trace with hash -513963889, now seen corresponding path program 1 times [2023-12-19 03:39:49,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:49,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246133800] [2023-12-19 03:39:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:49,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2023-12-19 03:39:49,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:49,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246133800] [2023-12-19 03:39:49,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246133800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:49,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:49,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:49,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543402417] [2023-12-19 03:39:49,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:49,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:49,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:49,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:49,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:49,460 INFO L87 Difference]: Start difference. First operand 91625 states and 97211 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:52,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:52,321 INFO L93 Difference]: Finished difference Result 199020 states and 211665 transitions. [2023-12-19 03:39:52,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:52,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 527 [2023-12-19 03:39:52,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:52,469 INFO L225 Difference]: With dead ends: 199020 [2023-12-19 03:39:52,470 INFO L226 Difference]: Without dead ends: 108147 [2023-12-19 03:39:52,525 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 [2023-12-19 03:39:52,525 INFO L413 NwaCegarLoop]: 1107 mSDtfsCounter, 826 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:52,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1114 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 03:39:52,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108147 states. [2023-12-19 03:39:53,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108147 to 105894. [2023-12-19 03:39:53,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105894 states, 105893 states have (on average 1.0585685550508532) internal successors, (112095), 105893 states have internal predecessors, (112095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105894 states to 105894 states and 112095 transitions. [2023-12-19 03:39:53,886 INFO L78 Accepts]: Start accepts. Automaton has 105894 states and 112095 transitions. Word has length 527 [2023-12-19 03:39:53,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:53,887 INFO L495 AbstractCegarLoop]: Abstraction has 105894 states and 112095 transitions. [2023-12-19 03:39:53,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand 105894 states and 112095 transitions. [2023-12-19 03:39:53,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2023-12-19 03:39:53,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:53,899 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:53,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 03:39:53,899 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:53,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:53,900 INFO L85 PathProgramCache]: Analyzing trace with hash -302599624, now seen corresponding path program 1 times [2023-12-19 03:39:53,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:53,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690991278] [2023-12-19 03:39:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:53,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 765 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-19 03:39:54,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:54,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690991278] [2023-12-19 03:39:54,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690991278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:54,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:54,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:54,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346160625] [2023-12-19 03:39:54,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:54,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:54,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:54,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:54,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:54,520 INFO L87 Difference]: Start difference. First operand 105894 states and 112095 transitions. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:39:57,101 INFO L93 Difference]: Finished difference Result 219297 states and 231961 transitions. [2023-12-19 03:39:57,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:39:57,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 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 600 [2023-12-19 03:39:57,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:39:57,256 INFO L225 Difference]: With dead ends: 219297 [2023-12-19 03:39:57,257 INFO L226 Difference]: Without dead ends: 114155 [2023-12-19 03:39:57,308 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 [2023-12-19 03:39:57,309 INFO L413 NwaCegarLoop]: 1245 mSDtfsCounter, 591 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:39:57,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1252 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2425 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 03:39:57,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114155 states. [2023-12-19 03:39:58,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114155 to 111902. [2023-12-19 03:39:58,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111902 states, 111901 states have (on average 1.0565946685016219) internal successors, (118234), 111901 states have internal predecessors, (118234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111902 states to 111902 states and 118234 transitions. [2023-12-19 03:39:58,890 INFO L78 Accepts]: Start accepts. Automaton has 111902 states and 118234 transitions. Word has length 600 [2023-12-19 03:39:58,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:39:58,890 INFO L495 AbstractCegarLoop]: Abstraction has 111902 states and 118234 transitions. [2023-12-19 03:39:58,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:39:58,891 INFO L276 IsEmpty]: Start isEmpty. Operand 111902 states and 118234 transitions. [2023-12-19 03:39:58,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-19 03:39:58,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:39:58,902 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:39:58,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 03:39:58,903 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:39:58,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:39:58,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1949618217, now seen corresponding path program 1 times [2023-12-19 03:39:58,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:39:58,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659741781] [2023-12-19 03:39:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:39:58,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:39:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:39:59,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 839 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-19 03:39:59,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:39:59,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659741781] [2023-12-19 03:39:59,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659741781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:39:59,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:39:59,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:39:59,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543098292] [2023-12-19 03:39:59,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:39:59,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:39:59,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:39:59,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:39:59,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:39:59,471 INFO L87 Difference]: Start difference. First operand 111902 states and 118234 transitions. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:02,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:40:02,199 INFO L93 Difference]: Finished difference Result 226807 states and 239544 transitions. [2023-12-19 03:40:02,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:40:02,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 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 637 [2023-12-19 03:40:02,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:40:02,390 INFO L225 Difference]: With dead ends: 226807 [2023-12-19 03:40:02,390 INFO L226 Difference]: Without dead ends: 115657 [2023-12-19 03:40:02,451 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 [2023-12-19 03:40:02,453 INFO L413 NwaCegarLoop]: 1273 mSDtfsCounter, 603 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:40:02,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 1280 Invalid, 2399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 03:40:02,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115657 states. [2023-12-19 03:40:03,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115657 to 111902. [2023-12-19 03:40:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111902 states, 111901 states have (on average 1.0557099579092233) internal successors, (118135), 111901 states have internal predecessors, (118135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:03,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111902 states to 111902 states and 118135 transitions. [2023-12-19 03:40:03,798 INFO L78 Accepts]: Start accepts. Automaton has 111902 states and 118135 transitions. Word has length 637 [2023-12-19 03:40:03,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:40:03,798 INFO L495 AbstractCegarLoop]: Abstraction has 111902 states and 118135 transitions. [2023-12-19 03:40:03,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:03,799 INFO L276 IsEmpty]: Start isEmpty. Operand 111902 states and 118135 transitions. [2023-12-19 03:40:03,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2023-12-19 03:40:03,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:40:03,811 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:40:03,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 03:40:03,811 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:40:03,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:40:03,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1431452040, now seen corresponding path program 1 times [2023-12-19 03:40:03,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:40:03,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218678866] [2023-12-19 03:40:03,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:40:03,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:40:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:40:04,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 1101 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-12-19 03:40:04,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:40:04,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218678866] [2023-12-19 03:40:04,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218678866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:40:04,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:40:04,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 03:40:04,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225686504] [2023-12-19 03:40:04,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:40:04,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:40:04,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:40:04,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:40:04,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:40:04,598 INFO L87 Difference]: Start difference. First operand 111902 states and 118135 transitions. Second operand has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:09,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:40:09,111 INFO L93 Difference]: Finished difference Result 234317 states and 247220 transitions. [2023-12-19 03:40:09,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:40:09,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 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 656 [2023-12-19 03:40:09,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:40:09,324 INFO L225 Difference]: With dead ends: 234317 [2023-12-19 03:40:09,325 INFO L226 Difference]: Without dead ends: 122416 [2023-12-19 03:40:09,386 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 [2023-12-19 03:40:09,387 INFO L413 NwaCegarLoop]: 1342 mSDtfsCounter, 1307 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 5434 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 5626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 5434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-19 03:40:09,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 1362 Invalid, 5626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 5434 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-19 03:40:09,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122416 states. [2023-12-19 03:40:10,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122416 to 122416. [2023-12-19 03:40:10,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122416 states, 122415 states have (on average 1.050965976391782) internal successors, (128654), 122415 states have internal predecessors, (128654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122416 states to 122416 states and 128654 transitions. [2023-12-19 03:40:10,839 INFO L78 Accepts]: Start accepts. Automaton has 122416 states and 128654 transitions. Word has length 656 [2023-12-19 03:40:10,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:40:10,839 INFO L495 AbstractCegarLoop]: Abstraction has 122416 states and 128654 transitions. [2023-12-19 03:40:10,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:10,840 INFO L276 IsEmpty]: Start isEmpty. Operand 122416 states and 128654 transitions. [2023-12-19 03:40:10,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-12-19 03:40:10,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:40:10,856 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:40:10,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 03:40:10,856 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:40:10,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:40:10,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1872105335, now seen corresponding path program 1 times [2023-12-19 03:40:10,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:40:10,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819045721] [2023-12-19 03:40:10,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:40:10,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:40:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:40:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 596 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-12-19 03:40:11,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:40:11,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819045721] [2023-12-19 03:40:11,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819045721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:40:11,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:40:11,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:40:11,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499366568] [2023-12-19 03:40:11,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:40:11,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:40:11,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:40:11,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:40:11,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:11,331 INFO L87 Difference]: Start difference. First operand 122416 states and 128654 transitions. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:14,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:40:14,937 INFO L93 Difference]: Finished difference Result 295899 states and 312048 transitions. [2023-12-19 03:40:14,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:40:14,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 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 705 [2023-12-19 03:40:14,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:40:15,186 INFO L225 Difference]: With dead ends: 295899 [2023-12-19 03:40:15,186 INFO L226 Difference]: Without dead ends: 174235 [2023-12-19 03:40:15,263 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 [2023-12-19 03:40:15,263 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 603 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2245 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 2245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 03:40:15,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 436 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 2245 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 03:40:15,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174235 states. [2023-12-19 03:40:17,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174235 to 169729. [2023-12-19 03:40:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169729 states, 169728 states have (on average 1.049496842006033) internal successors, (178129), 169728 states have internal predecessors, (178129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:17,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169729 states to 169729 states and 178129 transitions. [2023-12-19 03:40:17,564 INFO L78 Accepts]: Start accepts. Automaton has 169729 states and 178129 transitions. Word has length 705 [2023-12-19 03:40:17,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:40:17,564 INFO L495 AbstractCegarLoop]: Abstraction has 169729 states and 178129 transitions. [2023-12-19 03:40:17,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:17,565 INFO L276 IsEmpty]: Start isEmpty. Operand 169729 states and 178129 transitions. [2023-12-19 03:40:17,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2023-12-19 03:40:17,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:40:17,582 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 03:40:17,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 03:40:17,582 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:40:17,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:40:17,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1549558043, now seen corresponding path program 1 times [2023-12-19 03:40:17,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:40:17,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893360470] [2023-12-19 03:40:17,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:40:17,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:40:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:40:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 883 trivial. 0 not checked. [2023-12-19 03:40:18,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:40:18,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893360470] [2023-12-19 03:40:18,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893360470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:40:18,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:40:18,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:40:18,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983505836] [2023-12-19 03:40:18,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:40:18,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:40:18,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:40:18,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:40:18,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:18,307 INFO L87 Difference]: Start difference. First operand 169729 states and 178129 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:21,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:40:21,366 INFO L93 Difference]: Finished difference Result 341710 states and 358518 transitions. [2023-12-19 03:40:21,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:40:21,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 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 745 [2023-12-19 03:40:21,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:40:21,627 INFO L225 Difference]: With dead ends: 341710 [2023-12-19 03:40:21,627 INFO L226 Difference]: Without dead ends: 172733 [2023-12-19 03:40:21,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:21,708 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 820 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2285 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 2643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 2285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:40:21,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 104 Invalid, 2643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 03:40:21,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172733 states. [2023-12-19 03:40:23,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172733 to 162219. [2023-12-19 03:40:23,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162219 states, 162218 states have (on average 1.0384236028061005) internal successors, (168451), 162218 states have internal predecessors, (168451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162219 states to 162219 states and 168451 transitions. [2023-12-19 03:40:24,435 INFO L78 Accepts]: Start accepts. Automaton has 162219 states and 168451 transitions. Word has length 745 [2023-12-19 03:40:24,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:40:24,436 INFO L495 AbstractCegarLoop]: Abstraction has 162219 states and 168451 transitions. [2023-12-19 03:40:24,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:24,436 INFO L276 IsEmpty]: Start isEmpty. Operand 162219 states and 168451 transitions. [2023-12-19 03:40:24,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1447 [2023-12-19 03:40:24,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:40:24,670 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:40:24,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 03:40:24,670 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:40:24,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:40:24,671 INFO L85 PathProgramCache]: Analyzing trace with hash 850439292, now seen corresponding path program 1 times [2023-12-19 03:40:24,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:40:24,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97674807] [2023-12-19 03:40:24,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:40:24,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:40:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:40:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 1698 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-19 03:40:27,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:40:27,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97674807] [2023-12-19 03:40:27,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97674807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:40:27,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:40:27,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 03:40:27,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916979511] [2023-12-19 03:40:27,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:40:27,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 03:40:27,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:40:27,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 03:40:27,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:40:27,480 INFO L87 Difference]: Start difference. First operand 162219 states and 168451 transitions. Second operand has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:34,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:40:34,178 INFO L93 Difference]: Finished difference Result 418312 states and 434075 transitions. [2023-12-19 03:40:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 03:40:34,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 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 1446 [2023-12-19 03:40:34,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:40:34,867 INFO L225 Difference]: With dead ends: 418312 [2023-12-19 03:40:34,868 INFO L226 Difference]: Without dead ends: 256845 [2023-12-19 03:40:34,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:40:34,988 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 1846 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 7590 mSolverCounterSat, 1112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 8702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1112 IncrementalHoareTripleChecker+Valid, 7590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:40:34,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1846 Valid, 141 Invalid, 8702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1112 Valid, 7590 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-19 03:40:35,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256845 states. [2023-12-19 03:40:37,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256845 to 230560. [2023-12-19 03:40:38,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230560 states, 230559 states have (on average 1.0353575440559684) internal successors, (238711), 230559 states have internal predecessors, (238711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:38,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230560 states to 230560 states and 238711 transitions. [2023-12-19 03:40:38,613 INFO L78 Accepts]: Start accepts. Automaton has 230560 states and 238711 transitions. Word has length 1446 [2023-12-19 03:40:38,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:40:38,613 INFO L495 AbstractCegarLoop]: Abstraction has 230560 states and 238711 transitions. [2023-12-19 03:40:38,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:38,614 INFO L276 IsEmpty]: Start isEmpty. Operand 230560 states and 238711 transitions. [2023-12-19 03:40:38,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1458 [2023-12-19 03:40:38,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:40:38,753 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:40:38,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 03:40:38,753 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:40:38,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:40:38,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1772165610, now seen corresponding path program 1 times [2023-12-19 03:40:38,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:40:38,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333980351] [2023-12-19 03:40:38,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:40:38,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:40:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:40:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 913 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2023-12-19 03:40:39,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:40:39,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333980351] [2023-12-19 03:40:39,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333980351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:40:39,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:40:39,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:40:39,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956839516] [2023-12-19 03:40:39,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:40:39,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:40:39,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:40:39,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:40:39,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:40:39,952 INFO L87 Difference]: Start difference. First operand 230560 states and 238711 transitions. Second operand has 3 states, 3 states have (on average 400.6666666666667) internal successors, (1202), 3 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:40:43,863 INFO L93 Difference]: Finished difference Result 500171 states and 518101 transitions. [2023-12-19 03:40:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:40:43,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 400.6666666666667) internal successors, (1202), 3 states have internal predecessors, (1202), 0 states have call successors, (0), 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 1457 [2023-12-19 03:40:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:40:44,289 INFO L225 Difference]: With dead ends: 500171 [2023-12-19 03:40:44,289 INFO L226 Difference]: Without dead ends: 270363 [2023-12-19 03:40:44,700 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 [2023-12-19 03:40:44,705 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 146 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:40:44,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1025 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:40:44,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270363 states. [2023-12-19 03:40:47,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270363 to 264355. [2023-12-19 03:40:47,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264355 states, 264354 states have (on average 1.034692117388048) internal successors, (273525), 264354 states have internal predecessors, (273525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:48,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264355 states to 264355 states and 273525 transitions. [2023-12-19 03:40:48,149 INFO L78 Accepts]: Start accepts. Automaton has 264355 states and 273525 transitions. Word has length 1457 [2023-12-19 03:40:48,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:40:48,150 INFO L495 AbstractCegarLoop]: Abstraction has 264355 states and 273525 transitions. [2023-12-19 03:40:48,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 400.6666666666667) internal successors, (1202), 3 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:40:48,150 INFO L276 IsEmpty]: Start isEmpty. Operand 264355 states and 273525 transitions. [2023-12-19 03:40:48,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1486 [2023-12-19 03:40:48,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:40:48,304 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:40:48,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 03:40:48,304 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:40:48,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:40:48,305 INFO L85 PathProgramCache]: Analyzing trace with hash -448829980, now seen corresponding path program 1 times [2023-12-19 03:40:48,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:40:48,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666169919] [2023-12-19 03:40:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:40:48,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:40:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:40:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 584 proven. 613 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-19 03:40:50,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:40:50,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666169919] [2023-12-19 03:40:50,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666169919] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:40:50,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595289723] [2023-12-19 03:40:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:40:50,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:40:50,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:40:50,709 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) [2023-12-19 03:40:50,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 03:40:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:40:51,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 03:40:51,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:40:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 698 proven. 500 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 03:40:53,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 03:41:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 698 proven. 500 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 03:41:01,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595289723] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 03:41:01,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 03:41:01,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-12-19 03:41:01,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579146313] [2023-12-19 03:41:01,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 03:41:01,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 03:41:01,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:41:01,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 03:41:01,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2023-12-19 03:41:01,862 INFO L87 Difference]: Start difference. First operand 264355 states and 273525 transitions. Second operand has 11 states, 11 states have (on average 348.09090909090907) internal successors, (3829), 11 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:41:08,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-19 03:41:12,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-19 03:41:14,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-19 03:41:21,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-19 03:41:29,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-19 03:41:34,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-19 03:41:36,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-19 03:41:46,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:41:46,336 INFO L93 Difference]: Finished difference Result 684915 states and 707514 transitions. [2023-12-19 03:41:46,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 03:41:46,337 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 348.09090909090907) internal successors, (3829), 11 states have internal predecessors, (3829), 0 states have call successors, (0), 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 1485 [2023-12-19 03:41:46,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:41:46,338 INFO L225 Difference]: With dead ends: 684915 [2023-12-19 03:41:46,338 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 03:41:46,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2973 GetRequests, 2964 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2023-12-19 03:41:46,432 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 4419 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 13316 mSolverCounterSat, 3365 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4419 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 16684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3365 IncrementalHoareTripleChecker+Valid, 13316 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:41:46,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4419 Valid, 84 Invalid, 16684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3365 Valid, 13316 Invalid, 3 Unknown, 0 Unchecked, 41.5s Time] [2023-12-19 03:41:46,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 03:41:46,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 03:41:46,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:41:46,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 03:41:46,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1485 [2023-12-19 03:41:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:41:46,434 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 03:41:46,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 348.09090909090907) internal successors, (3829), 11 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:41:46,434 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 03:41:46,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 03:41:46,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 03:41:46,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 03:41:46,650 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,SelfDestructingSolverStorable24 [2023-12-19 03:41:46,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.