/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/Problem17_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 04:30:38,253 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 04:30:38,317 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 04:30:38,322 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 04:30:38,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 04:30:38,344 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 04:30:38,345 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 04:30:38,345 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 04:30:38,345 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 04:30:38,348 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 04:30:38,348 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 04:30:38,349 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 04:30:38,349 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 04:30:38,350 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 04:30:38,350 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 04:30:38,351 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 04:30:38,351 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 04:30:38,351 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 04:30:38,351 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 04:30:38,351 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 04:30:38,351 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 04:30:38,352 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 04:30:38,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 04:30:38,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 04:30:38,352 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 04:30:38,352 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 04:30:38,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 04:30:38,353 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 04:30:38,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 04:30:38,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 04:30:38,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 04:30:38,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 04:30:38,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:30:38,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 04:30:38,354 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 04:30:38,354 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 04:30:38,355 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 04:30:38,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 04:30:38,355 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 04:30:38,355 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 04:30:38,355 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 04:30:38,355 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 04:30:38,355 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 04:30:38,355 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 04:30:38,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 04:30:38,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 04:30:38,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 04:30:38,575 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 04:30:38,576 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 04:30:38,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label27.c [2023-12-19 04:30:39,724 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 04:30:40,088 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 04:30:40,089 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label27.c [2023-12-19 04:30:40,111 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac12cbfdf/d215b863358d46ad831931a3c5248e0f/FLAGa018246f3 [2023-12-19 04:30:40,122 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac12cbfdf/d215b863358d46ad831931a3c5248e0f [2023-12-19 04:30:40,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 04:30:40,125 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 04:30:40,127 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 04:30:40,127 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 04:30:40,131 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 04:30:40,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:30:40" (1/1) ... [2023-12-19 04:30:40,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd2e27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:30:40, skipping insertion in model container [2023-12-19 04:30:40,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:30:40" (1/1) ... [2023-12-19 04:30:40,219 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 04:30:40,400 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/Problem17_label27.c[6203,6216] [2023-12-19 04:30:40,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:30:40,839 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 04:30:40,858 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/Problem17_label27.c[6203,6216] [2023-12-19 04:30:41,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:30:41,046 INFO L206 MainTranslator]: Completed translation [2023-12-19 04:30:41,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:30:41 WrapperNode [2023-12-19 04:30:41,046 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 04:30:41,048 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 04:30:41,048 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 04:30:41,048 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 04:30:41,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:30:41" (1/1) ... [2023-12-19 04:30:41,093 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:30:41" (1/1) ... [2023-12-19 04:30:41,250 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-19 04:30:41,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 04:30:41,251 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 04:30:41,251 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 04:30:41,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 04:30:41,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:30:41" (1/1) ... [2023-12-19 04:30:41,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:30:41" (1/1) ... [2023-12-19 04:30:41,288 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:30:41" (1/1) ... [2023-12-19 04:30:41,553 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 04:30:41,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:30:41" (1/1) ... [2023-12-19 04:30:41,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:30:41" (1/1) ... [2023-12-19 04:30:41,671 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:30:41" (1/1) ... [2023-12-19 04:30:41,681 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:30:41" (1/1) ... [2023-12-19 04:30:41,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:30:41" (1/1) ... [2023-12-19 04:30:41,724 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:30:41" (1/1) ... [2023-12-19 04:30:41,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 04:30:41,765 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 04:30:41,766 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 04:30:41,766 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 04:30:41,767 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:30:41" (1/1) ... [2023-12-19 04:30:41,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:30:41,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:30:41,791 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 04:30:41,814 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 04:30:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 04:30:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 04:30:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 04:30:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 04:30:41,870 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 04:30:41,872 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 04:30:44,574 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 04:30:44,626 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 04:30:44,626 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 04:30:44,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:30:44 BoogieIcfgContainer [2023-12-19 04:30:44,627 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 04:30:44,628 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 04:30:44,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 04:30:44,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 04:30:44,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:30:40" (1/3) ... [2023-12-19 04:30:44,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186de146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:30:44, skipping insertion in model container [2023-12-19 04:30:44,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:30:41" (2/3) ... [2023-12-19 04:30:44,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186de146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:30:44, skipping insertion in model container [2023-12-19 04:30:44,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:30:44" (3/3) ... [2023-12-19 04:30:44,633 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label27.c [2023-12-19 04:30:44,645 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 04:30:44,645 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 04:30:44,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 04:30:44,699 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;@3e805f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 04:30:44,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 04:30:44,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 04:30:44,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-19 04:30:44,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:44,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:30:44,710 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:44,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:44,714 INFO L85 PathProgramCache]: Analyzing trace with hash 2135968835, now seen corresponding path program 1 times [2023-12-19 04:30:44,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:44,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444090918] [2023-12-19 04:30:44,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:44,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:44,851 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 04:30:44,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:44,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444090918] [2023-12-19 04:30:44,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444090918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:44,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:44,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:30:44,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439153390] [2023-12-19 04:30:44,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:44,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 04:30:44,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:44,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 04:30:44,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:30:44,886 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 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 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:44,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:44,955 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-19 04:30:44,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 04:30:44,964 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-19 04:30:44,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:44,975 INFO L225 Difference]: With dead ends: 1055 [2023-12-19 04:30:44,976 INFO L226 Difference]: Without dead ends: 526 [2023-12-19 04:30:44,982 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 04:30:44,985 INFO L413 NwaCegarLoop]: 935 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, 935 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 04:30:44,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 04:30:45,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-19 04:30:45,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-19 04:30:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states 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 04:30:45,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-19 04:30:45,052 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 40 [2023-12-19 04:30:45,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:45,052 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-19 04:30:45,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:45,053 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-19 04:30:45,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-19 04:30:45,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:45,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:30:45,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 04:30:45,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:45,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:45,054 INFO L85 PathProgramCache]: Analyzing trace with hash -271214799, now seen corresponding path program 1 times [2023-12-19 04:30:45,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:45,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652719951] [2023-12-19 04:30:45,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:45,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:45,216 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 04:30:45,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:45,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652719951] [2023-12-19 04:30:45,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652719951] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:45,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:45,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:30:45,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874865918] [2023-12-19 04:30:45,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:45,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:45,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:45,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:45,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:45,223 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:47,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:47,308 INFO L93 Difference]: Finished difference Result 1535 states and 2741 transitions. [2023-12-19 04:30:47,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:30:47,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-19 04:30:47,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:47,316 INFO L225 Difference]: With dead ends: 1535 [2023-12-19 04:30:47,316 INFO L226 Difference]: Without dead ends: 1010 [2023-12-19 04:30:47,318 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 04:30:47,319 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 492 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 1839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:47,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 197 Invalid, 1839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 04:30:47,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-12-19 04:30:47,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 995. [2023-12-19 04:30:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 994 states have (on average 1.7364185110663983) internal successors, (1726), 994 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states 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 04:30:47,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1726 transitions. [2023-12-19 04:30:47,341 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1726 transitions. Word has length 40 [2023-12-19 04:30:47,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:47,341 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1726 transitions. [2023-12-19 04:30:47,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1726 transitions. [2023-12-19 04:30:47,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-19 04:30:47,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:47,345 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, 1, 1, 1, 1, 1, 1, 1, 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 04:30:47,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 04:30:47,346 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:47,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:47,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1397875995, now seen corresponding path program 1 times [2023-12-19 04:30:47,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:47,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519619355] [2023-12-19 04:30:47,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:47,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:30:47,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:47,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519619355] [2023-12-19 04:30:47,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519619355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:47,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:47,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:30:47,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8365907] [2023-12-19 04:30:47,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:47,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:47,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:47,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:47,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:47,524 INFO L87 Difference]: Start difference. First operand 995 states and 1726 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:49,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:49,399 INFO L93 Difference]: Finished difference Result 2870 states and 5024 transitions. [2023-12-19 04:30:49,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:30:49,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-19 04:30:49,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:49,405 INFO L225 Difference]: With dead ends: 2870 [2023-12-19 04:30:49,405 INFO L226 Difference]: Without dead ends: 1876 [2023-12-19 04:30:49,406 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 04:30:49,407 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:49,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 518 Invalid, 1677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 04:30:49,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2023-12-19 04:30:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1869. [2023-12-19 04:30:49,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1868 states have (on average 1.4721627408993576) internal successors, (2750), 1868 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states 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 04:30:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2750 transitions. [2023-12-19 04:30:49,430 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2750 transitions. Word has length 105 [2023-12-19 04:30:49,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:49,430 INFO L495 AbstractCegarLoop]: Abstraction has 1869 states and 2750 transitions. [2023-12-19 04:30:49,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:49,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2750 transitions. [2023-12-19 04:30:49,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 04:30:49,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:49,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:49,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 04:30:49,431 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:49,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:49,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1371657092, now seen corresponding path program 1 times [2023-12-19 04:30:49,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:49,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483220298] [2023-12-19 04:30:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:49,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:30:49,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:49,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483220298] [2023-12-19 04:30:49,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483220298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:49,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:49,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:30:49,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127045546] [2023-12-19 04:30:49,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:49,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:49,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:49,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:49,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:49,639 INFO L87 Difference]: Start difference. First operand 1869 states and 2750 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 04:30:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:51,493 INFO L93 Difference]: Finished difference Result 5453 states and 8038 transitions. [2023-12-19 04:30:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:30:51,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2023-12-19 04:30:51,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:51,504 INFO L225 Difference]: With dead ends: 5453 [2023-12-19 04:30:51,516 INFO L226 Difference]: Without dead ends: 3585 [2023-12-19 04:30:51,524 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 04:30:51,531 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 453 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:51,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 911 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 04:30:51,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2023-12-19 04:30:51,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 3582. [2023-12-19 04:30:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 1.3356604300474728) internal successors, (4783), 3581 states have internal predecessors, (4783), 0 states have call successors, (0), 0 states 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 04:30:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 4783 transitions. [2023-12-19 04:30:51,603 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 4783 transitions. Word has length 110 [2023-12-19 04:30:51,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:51,604 INFO L495 AbstractCegarLoop]: Abstraction has 3582 states and 4783 transitions. [2023-12-19 04:30:51,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 04:30:51,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 4783 transitions. [2023-12-19 04:30:51,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-19 04:30:51,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:51,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:51,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 04:30:51,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:51,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:51,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1389949983, now seen corresponding path program 1 times [2023-12-19 04:30:51,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:51,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881609318] [2023-12-19 04:30:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:51,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:51,816 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:30:51,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:51,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881609318] [2023-12-19 04:30:51,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881609318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:51,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:51,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:30:51,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225422500] [2023-12-19 04:30:51,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:51,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:51,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:51,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:51,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:51,819 INFO L87 Difference]: Start difference. First operand 3582 states and 4783 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:53,598 INFO L93 Difference]: Finished difference Result 10570 states and 14107 transitions. [2023-12-19 04:30:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:30:53,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-19 04:30:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:53,611 INFO L225 Difference]: With dead ends: 10570 [2023-12-19 04:30:53,612 INFO L226 Difference]: Without dead ends: 5285 [2023-12-19 04:30:53,617 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 04:30:53,618 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:53,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 04:30:53,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5285 states. [2023-12-19 04:30:53,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5285 to 4433. [2023-12-19 04:30:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4433 states, 4432 states have (on average 1.2091606498194947) internal successors, (5359), 4432 states have internal predecessors, (5359), 0 states have call successors, (0), 0 states 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 04:30:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4433 states to 4433 states and 5359 transitions. [2023-12-19 04:30:53,692 INFO L78 Accepts]: Start accepts. Automaton has 4433 states and 5359 transitions. Word has length 151 [2023-12-19 04:30:53,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:53,693 INFO L495 AbstractCegarLoop]: Abstraction has 4433 states and 5359 transitions. [2023-12-19 04:30:53,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:53,694 INFO L276 IsEmpty]: Start isEmpty. Operand 4433 states and 5359 transitions. [2023-12-19 04:30:53,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-19 04:30:53,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:53,696 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, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:30:53,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 04:30:53,697 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:53,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:53,697 INFO L85 PathProgramCache]: Analyzing trace with hash -52093746, now seen corresponding path program 1 times [2023-12-19 04:30:53,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:53,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243811265] [2023-12-19 04:30:53,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:53,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:30:53,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:53,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243811265] [2023-12-19 04:30:53,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243811265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:53,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:53,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:30:53,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442596337] [2023-12-19 04:30:53,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:53,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:53,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:53,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:53,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:53,868 INFO L87 Difference]: Start difference. First operand 4433 states and 5359 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 04:30:55,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:55,275 INFO L93 Difference]: Finished difference Result 11413 states and 14014 transitions. [2023-12-19 04:30:55,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:30:55,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 04:30:55,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:55,297 INFO L225 Difference]: With dead ends: 11413 [2023-12-19 04:30:55,297 INFO L226 Difference]: Without dead ends: 6981 [2023-12-19 04:30:55,303 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 04:30:55,304 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:55,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 782 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:30:55,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6981 states. [2023-12-19 04:30:55,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6981 to 6981. [2023-12-19 04:30:55,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6981 states, 6980 states have (on average 1.1835243553008596) internal successors, (8261), 6980 states have internal predecessors, (8261), 0 states have call successors, (0), 0 states 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 04:30:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6981 states to 6981 states and 8261 transitions. [2023-12-19 04:30:55,419 INFO L78 Accepts]: Start accepts. Automaton has 6981 states and 8261 transitions. Word has length 192 [2023-12-19 04:30:55,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:55,419 INFO L495 AbstractCegarLoop]: Abstraction has 6981 states and 8261 transitions. [2023-12-19 04:30:55,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 04:30:55,419 INFO L276 IsEmpty]: Start isEmpty. Operand 6981 states and 8261 transitions. [2023-12-19 04:30:55,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-19 04:30:55,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:55,422 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:30:55,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 04:30:55,422 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:55,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:55,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1338633553, now seen corresponding path program 1 times [2023-12-19 04:30:55,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:55,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787985599] [2023-12-19 04:30:55,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:55,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-19 04:30:55,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:55,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787985599] [2023-12-19 04:30:55,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787985599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:55,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:55,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:30:55,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690142335] [2023-12-19 04:30:55,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:55,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:55,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:55,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:55,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:55,570 INFO L87 Difference]: Start difference. First operand 6981 states and 8261 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 04:30:57,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:57,195 INFO L93 Difference]: Finished difference Result 17787 states and 21272 transitions. [2023-12-19 04:30:57,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:30:57,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 272 [2023-12-19 04:30:57,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:57,220 INFO L225 Difference]: With dead ends: 17787 [2023-12-19 04:30:57,220 INFO L226 Difference]: Without dead ends: 9957 [2023-12-19 04:30:57,228 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 04:30:57,228 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 384 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:57,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 855 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:30:57,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9957 states. [2023-12-19 04:30:57,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9957 to 9957. [2023-12-19 04:30:57,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9957 states, 9956 states have (on average 1.1449377259943752) internal successors, (11399), 9956 states have internal predecessors, (11399), 0 states have call successors, (0), 0 states 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 04:30:57,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9957 states to 9957 states and 11399 transitions. [2023-12-19 04:30:57,353 INFO L78 Accepts]: Start accepts. Automaton has 9957 states and 11399 transitions. Word has length 272 [2023-12-19 04:30:57,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:57,354 INFO L495 AbstractCegarLoop]: Abstraction has 9957 states and 11399 transitions. [2023-12-19 04:30:57,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 04:30:57,354 INFO L276 IsEmpty]: Start isEmpty. Operand 9957 states and 11399 transitions. [2023-12-19 04:30:57,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2023-12-19 04:30:57,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:57,358 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 04:30:57,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 04:30:57,358 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:57,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:57,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2006967892, now seen corresponding path program 1 times [2023-12-19 04:30:57,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:57,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569649521] [2023-12-19 04:30:57,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:57,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-19 04:30:57,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:57,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569649521] [2023-12-19 04:30:57,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569649521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:57,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:57,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:30:57,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006379532] [2023-12-19 04:30:57,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:57,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:57,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:57,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:57,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:57,488 INFO L87 Difference]: Start difference. First operand 9957 states and 11399 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 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 04:30:59,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:59,087 INFO L93 Difference]: Finished difference Result 24167 states and 28008 transitions. [2023-12-19 04:30:59,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:30:59,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 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 312 [2023-12-19 04:30:59,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:59,111 INFO L225 Difference]: With dead ends: 24167 [2023-12-19 04:30:59,112 INFO L226 Difference]: Without dead ends: 14211 [2023-12-19 04:30:59,121 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 04:30:59,122 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 446 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:59,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 369 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:30:59,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14211 states. [2023-12-19 04:30:59,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14211 to 13350. [2023-12-19 04:30:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13350 states, 13349 states have (on average 1.1481758933253428) internal successors, (15327), 13349 states have internal predecessors, (15327), 0 states have call successors, (0), 0 states 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 04:30:59,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13350 states to 13350 states and 15327 transitions. [2023-12-19 04:30:59,264 INFO L78 Accepts]: Start accepts. Automaton has 13350 states and 15327 transitions. Word has length 312 [2023-12-19 04:30:59,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:59,265 INFO L495 AbstractCegarLoop]: Abstraction has 13350 states and 15327 transitions. [2023-12-19 04:30:59,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 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 04:30:59,265 INFO L276 IsEmpty]: Start isEmpty. Operand 13350 states and 15327 transitions. [2023-12-19 04:30:59,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-12-19 04:30:59,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:59,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:59,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 04:30:59,272 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:59,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:59,272 INFO L85 PathProgramCache]: Analyzing trace with hash 907737516, now seen corresponding path program 1 times [2023-12-19 04:30:59,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:59,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250882200] [2023-12-19 04:30:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:59,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:30:59,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:59,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250882200] [2023-12-19 04:30:59,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250882200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:59,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:59,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:30:59,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489734788] [2023-12-19 04:30:59,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:59,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:30:59,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:59,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:30:59,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:30:59,555 INFO L87 Difference]: Start difference. First operand 13350 states and 15327 transitions. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:01,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:01,914 INFO L93 Difference]: Finished difference Result 33116 states and 38116 transitions. [2023-12-19 04:31:01,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:31:01,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 379 [2023-12-19 04:31:01,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:01,980 INFO L225 Difference]: With dead ends: 33116 [2023-12-19 04:31:01,996 INFO L226 Difference]: Without dead ends: 19342 [2023-12-19 04:31:02,010 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 04:31:02,026 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 635 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:02,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 223 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 04:31:02,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19342 states. [2023-12-19 04:31:02,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19342 to 19338. [2023-12-19 04:31:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19338 states, 19337 states have (on average 1.1557635620830533) internal successors, (22349), 19337 states have internal predecessors, (22349), 0 states have call successors, (0), 0 states 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 04:31:02,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19338 states to 19338 states and 22349 transitions. [2023-12-19 04:31:02,465 INFO L78 Accepts]: Start accepts. Automaton has 19338 states and 22349 transitions. Word has length 379 [2023-12-19 04:31:02,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:02,465 INFO L495 AbstractCegarLoop]: Abstraction has 19338 states and 22349 transitions. [2023-12-19 04:31:02,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:02,466 INFO L276 IsEmpty]: Start isEmpty. Operand 19338 states and 22349 transitions. [2023-12-19 04:31:02,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-12-19 04:31:02,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:02,493 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:31:02,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 04:31:02,494 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:02,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:02,494 INFO L85 PathProgramCache]: Analyzing trace with hash -149965086, now seen corresponding path program 1 times [2023-12-19 04:31:02,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:02,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504663949] [2023-12-19 04:31:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:02,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:02,757 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-12-19 04:31:02,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:02,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504663949] [2023-12-19 04:31:02,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504663949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:31:02,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:31:02,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:31:02,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310590990] [2023-12-19 04:31:02,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:02,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:31:02,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:02,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:31:02,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:31:02,762 INFO L87 Difference]: Start difference. First operand 19338 states and 22349 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 04:31:04,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:04,545 INFO L93 Difference]: Finished difference Result 50179 states and 57999 transitions. [2023-12-19 04:31:04,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:31:04,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 401 [2023-12-19 04:31:04,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:04,581 INFO L225 Difference]: With dead ends: 50179 [2023-12-19 04:31:04,581 INFO L226 Difference]: Without dead ends: 30842 [2023-12-19 04:31:04,601 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 04:31:04,602 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 503 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:04,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 268 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 04:31:04,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30842 states. [2023-12-19 04:31:04,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30842 to 30823. [2023-12-19 04:31:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30823 states, 30822 states have (on average 1.1411005126208553) internal successors, (35171), 30822 states have internal predecessors, (35171), 0 states have call successors, (0), 0 states 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 04:31:05,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30823 states to 30823 states and 35171 transitions. [2023-12-19 04:31:05,016 INFO L78 Accepts]: Start accepts. Automaton has 30823 states and 35171 transitions. Word has length 401 [2023-12-19 04:31:05,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:05,017 INFO L495 AbstractCegarLoop]: Abstraction has 30823 states and 35171 transitions. [2023-12-19 04:31:05,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 04:31:05,017 INFO L276 IsEmpty]: Start isEmpty. Operand 30823 states and 35171 transitions. [2023-12-19 04:31:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-19 04:31:05,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:05,032 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:05,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 04:31:05,032 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:05,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:05,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1842428963, now seen corresponding path program 1 times [2023-12-19 04:31:05,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:05,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232865263] [2023-12-19 04:31:05,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:05,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 222 proven. 82 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-19 04:31:05,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:05,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232865263] [2023-12-19 04:31:05,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232865263] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:31:05,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133757627] [2023-12-19 04:31:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:05,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:31:05,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:31:05,628 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 04:31:05,648 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 04:31:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:05,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 04:31:05,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:31:06,364 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 222 proven. 82 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-19 04:31:06,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:31:06,754 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-19 04:31:06,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133757627] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 04:31:06,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 04:31:06,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-19 04:31:06,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882251258] [2023-12-19 04:31:06,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:06,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:31:06,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:06,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:31:06,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:31:06,757 INFO L87 Difference]: Start difference. First operand 30823 states and 35171 transitions. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states 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 04:31:09,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:09,621 INFO L93 Difference]: Finished difference Result 88938 states and 101083 transitions. [2023-12-19 04:31:09,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:31:09,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 408 [2023-12-19 04:31:09,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:09,688 INFO L225 Difference]: With dead ends: 88938 [2023-12-19 04:31:09,688 INFO L226 Difference]: Without dead ends: 56412 [2023-12-19 04:31:09,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 813 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:31:09,717 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 728 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:09,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 206 Invalid, 2911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 2360 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 04:31:09,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56412 states. [2023-12-19 04:31:10,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56412 to 52152. [2023-12-19 04:31:10,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52152 states, 52151 states have (on average 1.1363156986443212) internal successors, (59260), 52151 states have internal predecessors, (59260), 0 states have call successors, (0), 0 states 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 04:31:10,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52152 states to 52152 states and 59260 transitions. [2023-12-19 04:31:10,610 INFO L78 Accepts]: Start accepts. Automaton has 52152 states and 59260 transitions. Word has length 408 [2023-12-19 04:31:10,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:10,610 INFO L495 AbstractCegarLoop]: Abstraction has 52152 states and 59260 transitions. [2023-12-19 04:31:10,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states 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 04:31:10,611 INFO L276 IsEmpty]: Start isEmpty. Operand 52152 states and 59260 transitions. [2023-12-19 04:31:10,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2023-12-19 04:31:10,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:10,622 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:10,645 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 04:31:10,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 04:31:10,828 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:10,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:10,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1210717540, now seen corresponding path program 1 times [2023-12-19 04:31:10,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:10,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950525970] [2023-12-19 04:31:10,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:10,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-19 04:31:11,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:11,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950525970] [2023-12-19 04:31:11,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950525970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:31:11,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:31:11,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:31:11,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345382900] [2023-12-19 04:31:11,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:11,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:31:11,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:11,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:31:11,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:31:11,162 INFO L87 Difference]: Start difference. First operand 52152 states and 59260 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 04:31:13,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:13,108 INFO L93 Difference]: Finished difference Result 118760 states and 135001 transitions. [2023-12-19 04:31:13,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:31:13,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 444 [2023-12-19 04:31:13,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:13,191 INFO L225 Difference]: With dead ends: 118760 [2023-12-19 04:31:13,191 INFO L226 Difference]: Without dead ends: 60214 [2023-12-19 04:31:13,223 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 04:31:13,224 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 498 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:13,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 745 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:31:13,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60214 states. [2023-12-19 04:31:14,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60214 to 60206. [2023-12-19 04:31:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60206 states, 60205 states have (on average 1.120006643966448) internal successors, (67430), 60205 states have internal predecessors, (67430), 0 states have call successors, (0), 0 states 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 04:31:14,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60206 states to 60206 states and 67430 transitions. [2023-12-19 04:31:14,346 INFO L78 Accepts]: Start accepts. Automaton has 60206 states and 67430 transitions. Word has length 444 [2023-12-19 04:31:14,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:14,347 INFO L495 AbstractCegarLoop]: Abstraction has 60206 states and 67430 transitions. [2023-12-19 04:31:14,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 04:31:14,347 INFO L276 IsEmpty]: Start isEmpty. Operand 60206 states and 67430 transitions. [2023-12-19 04:31:14,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-12-19 04:31:14,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:14,354 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-19 04:31:14,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 04:31:14,355 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:14,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:14,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1072636296, now seen corresponding path program 1 times [2023-12-19 04:31:14,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:14,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025697644] [2023-12-19 04:31:14,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:14,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-19 04:31:14,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:14,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025697644] [2023-12-19 04:31:14,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025697644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:31:14,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:31:14,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:31:14,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608798573] [2023-12-19 04:31:14,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:14,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:31:14,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:14,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:31:14,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:31:14,994 INFO L87 Difference]: Start difference. First operand 60206 states and 67430 transitions. Second operand has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 04:31:17,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:17,890 INFO L93 Difference]: Finished difference Result 157942 states and 176489 transitions. [2023-12-19 04:31:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:31:17,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 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 04:31:17,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:18,009 INFO L225 Difference]: With dead ends: 157942 [2023-12-19 04:31:18,009 INFO L226 Difference]: Without dead ends: 97737 [2023-12-19 04:31:18,040 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 04:31:18,041 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 768 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 2871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:18,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 178 Invalid, 2871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 04:31:18,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97737 states. [2023-12-19 04:31:19,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97737 to 93050. [2023-12-19 04:31:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93050 states, 93049 states have (on average 1.1130802050532516) internal successors, (103571), 93049 states have internal predecessors, (103571), 0 states have call successors, (0), 0 states 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 04:31:19,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93050 states to 93050 states and 103571 transitions. [2023-12-19 04:31:19,262 INFO L78 Accepts]: Start accepts. Automaton has 93050 states and 103571 transitions. Word has length 446 [2023-12-19 04:31:19,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:19,263 INFO L495 AbstractCegarLoop]: Abstraction has 93050 states and 103571 transitions. [2023-12-19 04:31:19,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 04:31:19,263 INFO L276 IsEmpty]: Start isEmpty. Operand 93050 states and 103571 transitions. [2023-12-19 04:31:19,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-12-19 04:31:19,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:19,456 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:19,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 04:31:19,457 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:19,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:19,457 INFO L85 PathProgramCache]: Analyzing trace with hash -2076442692, now seen corresponding path program 1 times [2023-12-19 04:31:19,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:19,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814160821] [2023-12-19 04:31:19,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:19,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-19 04:31:19,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:19,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814160821] [2023-12-19 04:31:19,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814160821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:31:19,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:31:19,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:31:19,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112857055] [2023-12-19 04:31:19,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:19,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:31:19,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:19,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:31:19,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:31:19,729 INFO L87 Difference]: Start difference. First operand 93050 states and 103571 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 04:31:22,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:22,385 INFO L93 Difference]: Finished difference Result 201069 states and 223015 transitions. [2023-12-19 04:31:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:31:22,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 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 448 [2023-12-19 04:31:22,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:22,564 INFO L225 Difference]: With dead ends: 201069 [2023-12-19 04:31:22,565 INFO L226 Difference]: Without dead ends: 108020 [2023-12-19 04:31:22,754 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 04:31:22,755 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 868 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:22,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 756 Invalid, 2407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 04:31:22,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108020 states. [2023-12-19 04:31:23,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108020 to 93050. [2023-12-19 04:31:23,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93050 states, 93049 states have (on average 1.1127148061773904) internal successors, (103537), 93049 states have internal predecessors, (103537), 0 states have call successors, (0), 0 states 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 04:31:24,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93050 states to 93050 states and 103537 transitions. [2023-12-19 04:31:24,001 INFO L78 Accepts]: Start accepts. Automaton has 93050 states and 103537 transitions. Word has length 448 [2023-12-19 04:31:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:24,002 INFO L495 AbstractCegarLoop]: Abstraction has 93050 states and 103537 transitions. [2023-12-19 04:31:24,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 04:31:24,002 INFO L276 IsEmpty]: Start isEmpty. Operand 93050 states and 103537 transitions. [2023-12-19 04:31:24,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2023-12-19 04:31:24,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:24,011 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:31:24,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 04:31:24,011 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:24,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:24,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1813964162, now seen corresponding path program 1 times [2023-12-19 04:31:24,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:24,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673042385] [2023-12-19 04:31:24,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:24,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:24,582 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-12-19 04:31:24,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:24,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673042385] [2023-12-19 04:31:24,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673042385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:31:24,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:31:24,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:31:24,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847405891] [2023-12-19 04:31:24,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:24,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:31:24,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:24,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:31:24,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:31:24,586 INFO L87 Difference]: Start difference. First operand 93050 states and 103537 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states 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 04:31:26,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:26,509 INFO L93 Difference]: Finished difference Result 193776 states and 215975 transitions. [2023-12-19 04:31:26,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:31:26,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 489 [2023-12-19 04:31:26,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:26,655 INFO L225 Difference]: With dead ends: 193776 [2023-12-19 04:31:26,655 INFO L226 Difference]: Without dead ends: 100297 [2023-12-19 04:31:26,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:31:26,710 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 336 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:26,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 793 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:31:26,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100297 states. [2023-12-19 04:31:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100297 to 96886. [2023-12-19 04:31:27,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96886 states, 96885 states have (on average 1.1097383495897197) internal successors, (107517), 96885 states have internal predecessors, (107517), 0 states have call successors, (0), 0 states 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 04:31:28,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96886 states to 96886 states and 107517 transitions. [2023-12-19 04:31:28,105 INFO L78 Accepts]: Start accepts. Automaton has 96886 states and 107517 transitions. Word has length 489 [2023-12-19 04:31:28,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:28,105 INFO L495 AbstractCegarLoop]: Abstraction has 96886 states and 107517 transitions. [2023-12-19 04:31:28,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states 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 04:31:28,105 INFO L276 IsEmpty]: Start isEmpty. Operand 96886 states and 107517 transitions. [2023-12-19 04:31:28,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-12-19 04:31:28,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:28,116 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:28,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 04:31:28,116 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:28,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:28,117 INFO L85 PathProgramCache]: Analyzing trace with hash 720669314, now seen corresponding path program 1 times [2023-12-19 04:31:28,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:28,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108252302] [2023-12-19 04:31:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:28,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 307 proven. 82 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-19 04:31:29,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:29,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108252302] [2023-12-19 04:31:29,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108252302] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:31:29,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506747744] [2023-12-19 04:31:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:29,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:31:29,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:31:29,185 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 04:31:29,187 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 04:31:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:29,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 04:31:29,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:31:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 04:31:29,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:31:29,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506747744] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:31:29,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:31:29,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 04:31:29,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577930061] [2023-12-19 04:31:29,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:29,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:31:29,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:29,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:31:29,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:31:29,558 INFO L87 Difference]: Start difference. First operand 96886 states and 107517 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states 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 04:31:31,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:31,673 INFO L93 Difference]: Finished difference Result 207844 states and 231024 transitions. [2023-12-19 04:31:31,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:31:31,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 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 502 [2023-12-19 04:31:31,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:31,808 INFO L225 Difference]: With dead ends: 207844 [2023-12-19 04:31:31,809 INFO L226 Difference]: Without dead ends: 106271 [2023-12-19 04:31:31,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 501 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 04:31:31,857 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 490 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:31,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 666 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:31:31,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106271 states. [2023-12-19 04:31:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106271 to 106261. [2023-12-19 04:31:33,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106261 states, 106260 states have (on average 1.1102766798418973) internal successors, (117978), 106260 states have internal predecessors, (117978), 0 states have call successors, (0), 0 states 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 04:31:33,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106261 states to 106261 states and 117978 transitions. [2023-12-19 04:31:33,382 INFO L78 Accepts]: Start accepts. Automaton has 106261 states and 117978 transitions. Word has length 502 [2023-12-19 04:31:33,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:33,382 INFO L495 AbstractCegarLoop]: Abstraction has 106261 states and 117978 transitions. [2023-12-19 04:31:33,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states 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 04:31:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 106261 states and 117978 transitions. [2023-12-19 04:31:33,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-12-19 04:31:33,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:33,394 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:31:33,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 04:31:33,599 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,SelfDestructingSolverStorable15 [2023-12-19 04:31:33,600 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:33,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:33,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1945366806, now seen corresponding path program 1 times [2023-12-19 04:31:33,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:33,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665654030] [2023-12-19 04:31:33,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:33,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:34,221 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-12-19 04:31:34,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:34,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665654030] [2023-12-19 04:31:34,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665654030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:31:34,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:31:34,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:31:34,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920881326] [2023-12-19 04:31:34,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:34,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:31:34,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:34,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:31:34,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:31:34,223 INFO L87 Difference]: Start difference. First operand 106261 states and 117978 transitions. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states 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 04:31:36,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:36,359 INFO L93 Difference]: Finished difference Result 226148 states and 251121 transitions. [2023-12-19 04:31:36,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:31:36,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 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 517 [2023-12-19 04:31:36,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:36,665 INFO L225 Difference]: With dead ends: 226148 [2023-12-19 04:31:36,665 INFO L226 Difference]: Without dead ends: 119888 [2023-12-19 04:31:36,681 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 04:31:36,683 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 345 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:36,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 358 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 04:31:36,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119888 states. [2023-12-19 04:31:38,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119888 to 111792. [2023-12-19 04:31:38,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111792 states, 111791 states have (on average 1.1096331547262301) internal successors, (124047), 111791 states have internal predecessors, (124047), 0 states have call successors, (0), 0 states 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 04:31:38,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111792 states to 111792 states and 124047 transitions. [2023-12-19 04:31:38,722 INFO L78 Accepts]: Start accepts. Automaton has 111792 states and 124047 transitions. Word has length 517 [2023-12-19 04:31:38,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:38,722 INFO L495 AbstractCegarLoop]: Abstraction has 111792 states and 124047 transitions. [2023-12-19 04:31:38,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states 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 04:31:38,722 INFO L276 IsEmpty]: Start isEmpty. Operand 111792 states and 124047 transitions. [2023-12-19 04:31:38,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2023-12-19 04:31:38,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:38,736 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:31:38,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 04:31:38,736 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:38,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:38,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1204172692, now seen corresponding path program 1 times [2023-12-19 04:31:38,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:38,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405733551] [2023-12-19 04:31:38,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:38,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-19 04:31:39,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:39,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405733551] [2023-12-19 04:31:39,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405733551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:31:39,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:31:39,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:31:39,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550427531] [2023-12-19 04:31:39,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:39,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:31:39,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:39,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:31:39,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:31:39,069 INFO L87 Difference]: Start difference. First operand 111792 states and 124047 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 04:31:41,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:41,327 INFO L93 Difference]: Finished difference Result 231682 states and 256679 transitions. [2023-12-19 04:31:41,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:31:41,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 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 533 [2023-12-19 04:31:41,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:41,497 INFO L225 Difference]: With dead ends: 231682 [2023-12-19 04:31:41,498 INFO L226 Difference]: Without dead ends: 119891 [2023-12-19 04:31:41,560 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 04:31:41,561 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 419 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:41,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 347 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 04:31:41,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119891 states. [2023-12-19 04:31:42,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119891 to 111792. [2023-12-19 04:31:43,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111792 states, 111791 states have (on average 1.1094721399754899) internal successors, (124029), 111791 states have internal predecessors, (124029), 0 states have call successors, (0), 0 states 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 04:31:43,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111792 states to 111792 states and 124029 transitions. [2023-12-19 04:31:43,352 INFO L78 Accepts]: Start accepts. Automaton has 111792 states and 124029 transitions. Word has length 533 [2023-12-19 04:31:43,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:43,353 INFO L495 AbstractCegarLoop]: Abstraction has 111792 states and 124029 transitions. [2023-12-19 04:31:43,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 04:31:43,353 INFO L276 IsEmpty]: Start isEmpty. Operand 111792 states and 124029 transitions. [2023-12-19 04:31:43,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2023-12-19 04:31:43,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:43,365 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:31:43,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 04:31:43,366 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:43,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:43,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1309020069, now seen corresponding path program 1 times [2023-12-19 04:31:43,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:43,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953127510] [2023-12-19 04:31:43,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:43,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:43,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 755 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-19 04:31:43,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:43,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953127510] [2023-12-19 04:31:43,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953127510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:31:43,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:31:43,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:31:43,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105197318] [2023-12-19 04:31:43,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:43,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:31:43,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:43,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:31:43,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:31:43,844 INFO L87 Difference]: Start difference. First operand 111792 states and 124029 transitions. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 04:31:45,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:45,900 INFO L93 Difference]: Finished difference Result 239349 states and 265026 transitions. [2023-12-19 04:31:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:31:45,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 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 580 [2023-12-19 04:31:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:46,105 INFO L225 Difference]: With dead ends: 239349 [2023-12-19 04:31:46,106 INFO L226 Difference]: Without dead ends: 127558 [2023-12-19 04:31:46,168 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 04:31:46,169 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 358 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:46,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 325 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:31:46,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127558 states. [2023-12-19 04:31:47,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127558 to 112642. [2023-12-19 04:31:47,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112642 states, 112641 states have (on average 1.0998748235544784) internal successors, (123891), 112641 states have internal predecessors, (123891), 0 states have call successors, (0), 0 states 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 04:31:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112642 states to 112642 states and 123891 transitions. [2023-12-19 04:31:48,036 INFO L78 Accepts]: Start accepts. Automaton has 112642 states and 123891 transitions. Word has length 580 [2023-12-19 04:31:48,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:48,037 INFO L495 AbstractCegarLoop]: Abstraction has 112642 states and 123891 transitions. [2023-12-19 04:31:48,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 04:31:48,037 INFO L276 IsEmpty]: Start isEmpty. Operand 112642 states and 123891 transitions. [2023-12-19 04:31:48,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2023-12-19 04:31:48,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:48,062 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-19 04:31:48,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 04:31:48,063 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:48,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:48,063 INFO L85 PathProgramCache]: Analyzing trace with hash 178790706, now seen corresponding path program 1 times [2023-12-19 04:31:48,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:48,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51646087] [2023-12-19 04:31:48,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:48,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 521 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-12-19 04:31:48,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:48,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51646087] [2023-12-19 04:31:48,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51646087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:31:48,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:31:48,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:31:48,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548914577] [2023-12-19 04:31:48,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:48,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:31:48,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:48,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:31:48,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:31:48,656 INFO L87 Difference]: Start difference. First operand 112642 states and 123891 transitions. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 04:31:50,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:50,700 INFO L93 Difference]: Finished difference Result 242302 states and 266382 transitions. [2023-12-19 04:31:50,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:31:50,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 606 [2023-12-19 04:31:50,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:50,856 INFO L225 Difference]: With dead ends: 242302 [2023-12-19 04:31:50,857 INFO L226 Difference]: Without dead ends: 128796 [2023-12-19 04:31:50,910 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 04:31:50,911 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 222 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:50,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 631 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:31:51,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128796 states. [2023-12-19 04:31:52,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128796 to 124960. [2023-12-19 04:31:52,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124960 states, 124959 states have (on average 1.091582038908762) internal successors, (136403), 124959 states have internal predecessors, (136403), 0 states have call successors, (0), 0 states 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 04:31:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124960 states to 124960 states and 136403 transitions. [2023-12-19 04:31:52,753 INFO L78 Accepts]: Start accepts. Automaton has 124960 states and 136403 transitions. Word has length 606 [2023-12-19 04:31:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:52,754 INFO L495 AbstractCegarLoop]: Abstraction has 124960 states and 136403 transitions. [2023-12-19 04:31:52,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 04:31:52,754 INFO L276 IsEmpty]: Start isEmpty. Operand 124960 states and 136403 transitions. [2023-12-19 04:31:52,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2023-12-19 04:31:52,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:52,769 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:52,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 04:31:52,770 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:52,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:52,770 INFO L85 PathProgramCache]: Analyzing trace with hash 270065848, now seen corresponding path program 1 times [2023-12-19 04:31:52,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:52,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458712058] [2023-12-19 04:31:52,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:52,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:53,330 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-19 04:31:53,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:53,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458712058] [2023-12-19 04:31:53,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458712058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:31:53,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:31:53,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:31:53,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616776691] [2023-12-19 04:31:53,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:53,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:31:53,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:53,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:31:53,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:31:53,335 INFO L87 Difference]: Start difference. First operand 124960 states and 136403 transitions. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 04:31:55,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:55,523 INFO L93 Difference]: Finished difference Result 263111 states and 286745 transitions. [2023-12-19 04:31:55,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:31:55,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 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 630 [2023-12-19 04:31:55,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:55,688 INFO L225 Difference]: With dead ends: 263111 [2023-12-19 04:31:55,689 INFO L226 Difference]: Without dead ends: 132627 [2023-12-19 04:31:55,763 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 04:31:55,763 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 487 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:55,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 622 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:31:55,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132627 states. [2023-12-19 04:31:57,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132627 to 121559. [2023-12-19 04:31:57,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121559 states, 121558 states have (on average 1.0878428404547624) internal successors, (132236), 121558 states have internal predecessors, (132236), 0 states have call successors, (0), 0 states 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 04:31:57,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121559 states to 121559 states and 132236 transitions. [2023-12-19 04:31:57,587 INFO L78 Accepts]: Start accepts. Automaton has 121559 states and 132236 transitions. Word has length 630 [2023-12-19 04:31:57,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:57,587 INFO L495 AbstractCegarLoop]: Abstraction has 121559 states and 132236 transitions. [2023-12-19 04:31:57,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 04:31:57,587 INFO L276 IsEmpty]: Start isEmpty. Operand 121559 states and 132236 transitions. [2023-12-19 04:31:57,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2023-12-19 04:31:57,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:57,652 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:31:57,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 04:31:57,652 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:57,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:57,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1394632289, now seen corresponding path program 1 times [2023-12-19 04:31:57,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:57,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529125808] [2023-12-19 04:31:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:57,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:59,165 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 483 proven. 240 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-19 04:31:59,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:59,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529125808] [2023-12-19 04:31:59,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529125808] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:31:59,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959922202] [2023-12-19 04:31:59,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:59,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:31:59,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:31:59,167 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:31:59,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 04:31:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:59,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 1005 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 04:31:59,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:32:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 483 proven. 240 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-19 04:32:00,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:32:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 483 proven. 240 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-19 04:32:01,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959922202] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 04:32:01,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 04:32:01,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-12-19 04:32:01,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072515976] [2023-12-19 04:32:01,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 04:32:01,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 04:32:01,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:32:01,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 04:32:01,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:32:01,327 INFO L87 Difference]: Start difference. First operand 121559 states and 132236 transitions. Second operand has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states 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 04:32:05,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:32:05,481 INFO L93 Difference]: Finished difference Result 250784 states and 272844 transitions. [2023-12-19 04:32:05,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 04:32:05,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 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 847 [2023-12-19 04:32:05,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:32:05,678 INFO L225 Difference]: With dead ends: 250784 [2023-12-19 04:32:05,678 INFO L226 Difference]: Without dead ends: 129226 [2023-12-19 04:32:05,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1698 GetRequests, 1692 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-19 04:32:05,741 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 581 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 3893 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 4243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 3893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:32:05,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 834 Invalid, 4243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 3893 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 04:32:05,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129226 states. [2023-12-19 04:32:07,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129226 to 117293. [2023-12-19 04:32:07,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117293 states, 117292 states have (on average 1.084651979674658) internal successors, (127221), 117292 states have internal predecessors, (127221), 0 states have call successors, (0), 0 states 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 04:32:07,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117293 states to 117293 states and 127221 transitions. [2023-12-19 04:32:07,516 INFO L78 Accepts]: Start accepts. Automaton has 117293 states and 127221 transitions. Word has length 847 [2023-12-19 04:32:07,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:32:07,517 INFO L495 AbstractCegarLoop]: Abstraction has 117293 states and 127221 transitions. [2023-12-19 04:32:07,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states 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 04:32:07,517 INFO L276 IsEmpty]: Start isEmpty. Operand 117293 states and 127221 transitions. [2023-12-19 04:32:07,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2023-12-19 04:32:07,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:32:07,584 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:07,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 04:32:07,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:32:07,790 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:32:07,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:32:07,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2027978949, now seen corresponding path program 1 times [2023-12-19 04:32:07,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:32:07,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74829873] [2023-12-19 04:32:07,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:32:07,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:32:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:32:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 691 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2023-12-19 04:32:08,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:32:08,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74829873] [2023-12-19 04:32:08,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74829873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:32:08,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:32:08,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:32:08,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795081156] [2023-12-19 04:32:08,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:32:08,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:32:08,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:32:08,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:32:08,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:32:08,315 INFO L87 Difference]: Start difference. First operand 117293 states and 127221 transitions. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states 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 04:32:10,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:32:10,117 INFO L93 Difference]: Finished difference Result 232425 states and 251781 transitions. [2023-12-19 04:32:10,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:32:10,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 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 964 [2023-12-19 04:32:10,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:32:10,265 INFO L225 Difference]: With dead ends: 232425 [2023-12-19 04:32:10,265 INFO L226 Difference]: Without dead ends: 115131 [2023-12-19 04:32:10,317 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 04:32:10,317 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 448 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:32:10,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 297 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 04:32:10,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115131 states. [2023-12-19 04:32:11,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115131 to 103172. [2023-12-19 04:32:11,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103172 states, 103171 states have (on average 1.0809723662657142) internal successors, (111525), 103171 states have internal predecessors, (111525), 0 states have call successors, (0), 0 states 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 04:32:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103172 states to 103172 states and 111525 transitions. [2023-12-19 04:32:11,740 INFO L78 Accepts]: Start accepts. Automaton has 103172 states and 111525 transitions. Word has length 964 [2023-12-19 04:32:11,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:32:11,740 INFO L495 AbstractCegarLoop]: Abstraction has 103172 states and 111525 transitions. [2023-12-19 04:32:11,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states 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 04:32:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 103172 states and 111525 transitions. [2023-12-19 04:32:11,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1094 [2023-12-19 04:32:11,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:32:11,819 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:11,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 04:32:11,819 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:32:11,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:32:11,820 INFO L85 PathProgramCache]: Analyzing trace with hash -557757116, now seen corresponding path program 1 times [2023-12-19 04:32:11,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:32:11,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107821086] [2023-12-19 04:32:11,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:32:11,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:32:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:32:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 1601 proven. 0 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2023-12-19 04:32:13,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:32:13,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107821086] [2023-12-19 04:32:13,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107821086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:32:13,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:32:13,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:32:13,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693697195] [2023-12-19 04:32:13,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:32:13,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:32:13,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:32:13,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:32:13,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:32:13,052 INFO L87 Difference]: Start difference. First operand 103172 states and 111525 transitions. Second operand has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 0 states have call successors, (0), 0 states 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 04:32:15,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:32:15,832 INFO L93 Difference]: Finished difference Result 216989 states and 234435 transitions. [2023-12-19 04:32:15,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:32:15,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 0 states have call successors, (0), 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 1093 [2023-12-19 04:32:15,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:32:16,268 INFO L225 Difference]: With dead ends: 216989 [2023-12-19 04:32:16,268 INFO L226 Difference]: Without dead ends: 113818 [2023-12-19 04:32:16,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:32:16,286 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 608 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:32:16,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 316 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 04:32:16,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113818 states. [2023-12-19 04:32:17,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113818 to 111261. [2023-12-19 04:32:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111261 states, 111260 states have (on average 1.0779165917670321) internal successors, (119929), 111260 states have internal predecessors, (119929), 0 states have call successors, (0), 0 states 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 04:32:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111261 states to 111261 states and 119929 transitions. [2023-12-19 04:32:18,081 INFO L78 Accepts]: Start accepts. Automaton has 111261 states and 119929 transitions. Word has length 1093 [2023-12-19 04:32:18,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:32:18,081 INFO L495 AbstractCegarLoop]: Abstraction has 111261 states and 119929 transitions. [2023-12-19 04:32:18,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.75) internal successors, (731), 4 states have internal predecessors, (731), 0 states have call successors, (0), 0 states 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 04:32:18,081 INFO L276 IsEmpty]: Start isEmpty. Operand 111261 states and 119929 transitions. [2023-12-19 04:32:18,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1095 [2023-12-19 04:32:18,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:32:18,160 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:32:18,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 04:32:18,160 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:32:18,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:32:18,161 INFO L85 PathProgramCache]: Analyzing trace with hash -147043002, now seen corresponding path program 1 times [2023-12-19 04:32:18,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:32:18,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335325183] [2023-12-19 04:32:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:32:18,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:32:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:32:18,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2128 backedges. 1206 proven. 0 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2023-12-19 04:32:18,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:32:18,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335325183] [2023-12-19 04:32:18,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335325183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:32:18,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:32:18,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:32:18,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862799756] [2023-12-19 04:32:18,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:32:18,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:32:18,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:32:18,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:32:18,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:32:18,903 INFO L87 Difference]: Start difference. First operand 111261 states and 119929 transitions. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states 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 04:32:20,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:32:20,902 INFO L93 Difference]: Finished difference Result 226780 states and 244527 transitions. [2023-12-19 04:32:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:32:20,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 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 1094 [2023-12-19 04:32:20,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:32:21,072 INFO L225 Difference]: With dead ends: 226780 [2023-12-19 04:32:21,072 INFO L226 Difference]: Without dead ends: 115520 [2023-12-19 04:32:21,124 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 04:32:21,125 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 488 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:32:21,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 194 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:32:21,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115520 states. [2023-12-19 04:32:22,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115520 to 108701. [2023-12-19 04:32:22,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108701 states, 108700 states have (on average 1.0755933762649494) internal successors, (116917), 108700 states have internal predecessors, (116917), 0 states have call successors, (0), 0 states 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 04:32:22,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108701 states to 108701 states and 116917 transitions. [2023-12-19 04:32:22,540 INFO L78 Accepts]: Start accepts. Automaton has 108701 states and 116917 transitions. Word has length 1094 [2023-12-19 04:32:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:32:22,540 INFO L495 AbstractCegarLoop]: Abstraction has 108701 states and 116917 transitions. [2023-12-19 04:32:22,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states 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 04:32:22,541 INFO L276 IsEmpty]: Start isEmpty. Operand 108701 states and 116917 transitions. [2023-12-19 04:32:22,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1176 [2023-12-19 04:32:22,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:32:22,614 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:22,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 04:32:22,614 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:32:22,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:32:22,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1991958653, now seen corresponding path program 1 times [2023-12-19 04:32:22,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:32:22,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447142629] [2023-12-19 04:32:22,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:32:22,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:32:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:32:23,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 1749 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-12-19 04:32:23,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:32:23,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447142629] [2023-12-19 04:32:23,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447142629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:32:23,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:32:23,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:32:23,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076776510] [2023-12-19 04:32:23,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:32:23,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:32:23,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:32:23,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:32:23,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:32:23,732 INFO L87 Difference]: Start difference. First operand 108701 states and 116917 transitions. Second operand has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 04:32:26,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:32:26,537 INFO L93 Difference]: Finished difference Result 249770 states and 268397 transitions. [2023-12-19 04:32:26,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:32:26,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1175 [2023-12-19 04:32:26,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:32:26,727 INFO L225 Difference]: With dead ends: 249770 [2023-12-19 04:32:26,727 INFO L226 Difference]: Without dead ends: 140645 [2023-12-19 04:32:26,796 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 04:32:26,797 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 469 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:32:26,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 180 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 04:32:27,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140645 states. [2023-12-19 04:32:28,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140645 to 121046. [2023-12-19 04:32:28,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121046 states, 121045 states have (on average 1.0692221900945929) internal successors, (129424), 121045 states have internal predecessors, (129424), 0 states have call successors, (0), 0 states 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 04:32:28,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121046 states to 121046 states and 129424 transitions. [2023-12-19 04:32:28,637 INFO L78 Accepts]: Start accepts. Automaton has 121046 states and 129424 transitions. Word has length 1175 [2023-12-19 04:32:28,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:32:28,638 INFO L495 AbstractCegarLoop]: Abstraction has 121046 states and 129424 transitions. [2023-12-19 04:32:28,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 04:32:28,638 INFO L276 IsEmpty]: Start isEmpty. Operand 121046 states and 129424 transitions. [2023-12-19 04:32:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1181 [2023-12-19 04:32:28,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:32:28,750 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:32:28,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 04:32:28,751 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:32:28,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:32:28,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2141231369, now seen corresponding path program 1 times [2023-12-19 04:32:28,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:32:28,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627486762] [2023-12-19 04:32:28,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:32:28,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:32:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:32:30,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2042 backedges. 1764 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-12-19 04:32:30,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:32:30,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627486762] [2023-12-19 04:32:30,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627486762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:32:30,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:32:30,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:32:30,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394984284] [2023-12-19 04:32:30,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:32:30,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:32:30,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:32:30,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:32:30,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:32:30,055 INFO L87 Difference]: Start difference. First operand 121046 states and 129424 transitions. Second operand has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 04:32:32,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:32:32,712 INFO L93 Difference]: Finished difference Result 268914 states and 287359 transitions. [2023-12-19 04:32:32,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:32:32,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 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 1180 [2023-12-19 04:32:32,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:32:32,870 INFO L225 Difference]: With dead ends: 268914 [2023-12-19 04:32:32,871 INFO L226 Difference]: Without dead ends: 147444 [2023-12-19 04:32:32,893 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 04:32:32,894 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 485 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 2626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:32:32,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 164 Invalid, 2626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 04:32:32,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147444 states. [2023-12-19 04:32:34,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147444 to 121471. [2023-12-19 04:32:34,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121471 states, 121470 states have (on average 1.0697785461430807) internal successors, (129946), 121470 states have internal predecessors, (129946), 0 states have call successors, (0), 0 states 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 04:32:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121471 states to 121471 states and 129946 transitions. [2023-12-19 04:32:34,587 INFO L78 Accepts]: Start accepts. Automaton has 121471 states and 129946 transitions. Word has length 1180 [2023-12-19 04:32:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:32:34,588 INFO L495 AbstractCegarLoop]: Abstraction has 121471 states and 129946 transitions. [2023-12-19 04:32:34,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 04:32:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 121471 states and 129946 transitions. [2023-12-19 04:32:34,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1194 [2023-12-19 04:32:34,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:32:34,671 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:32:34,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 04:32:34,671 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:32:34,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:32:34,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1363024201, now seen corresponding path program 1 times [2023-12-19 04:32:34,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:32:34,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104318813] [2023-12-19 04:32:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:32:34,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:32:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:32:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 1254 proven. 0 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2023-12-19 04:32:35,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:32:35,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104318813] [2023-12-19 04:32:35,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104318813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:32:35,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:32:35,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:32:35,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410354365] [2023-12-19 04:32:35,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:32:35,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:32:35,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:32:35,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:32:35,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:32:35,581 INFO L87 Difference]: Start difference. First operand 121471 states and 129946 transitions. Second operand has 3 states, 3 states have (on average 239.33333333333334) internal successors, (718), 2 states have internal predecessors, (718), 0 states have call successors, (0), 0 states 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 04:32:36,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:32:36,928 INFO L93 Difference]: Finished difference Result 230566 states and 246390 transitions. [2023-12-19 04:32:36,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:32:36,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 239.33333333333334) internal successors, (718), 2 states have internal predecessors, (718), 0 states have call successors, (0), 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 1193 [2023-12-19 04:32:36,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:32:37,199 INFO L225 Difference]: With dead ends: 230566 [2023-12-19 04:32:37,200 INFO L226 Difference]: Without dead ends: 109096 [2023-12-19 04:32:37,249 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 04:32:37,250 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 346 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:32:37,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 64 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 04:32:37,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109096 states. [2023-12-19 04:32:38,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109096 to 109085. [2023-12-19 04:32:38,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109085 states, 109084 states have (on average 1.0671225844303474) internal successors, (116406), 109084 states have internal predecessors, (116406), 0 states have call successors, (0), 0 states 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 04:32:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109085 states to 109085 states and 116406 transitions. [2023-12-19 04:32:38,766 INFO L78 Accepts]: Start accepts. Automaton has 109085 states and 116406 transitions. Word has length 1193 [2023-12-19 04:32:38,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:32:38,767 INFO L495 AbstractCegarLoop]: Abstraction has 109085 states and 116406 transitions. [2023-12-19 04:32:38,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.33333333333334) internal successors, (718), 2 states have internal predecessors, (718), 0 states have call successors, (0), 0 states 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 04:32:38,767 INFO L276 IsEmpty]: Start isEmpty. Operand 109085 states and 116406 transitions. [2023-12-19 04:32:38,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1248 [2023-12-19 04:32:38,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:32:38,837 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:38,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 04:32:38,838 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:32:38,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:32:38,838 INFO L85 PathProgramCache]: Analyzing trace with hash 44164732, now seen corresponding path program 1 times [2023-12-19 04:32:38,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:32:38,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271840453] [2023-12-19 04:32:38,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:32:38,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:32:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:32:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1823 backedges. 1440 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2023-12-19 04:32:39,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:32:39,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271840453] [2023-12-19 04:32:39,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271840453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:32:39,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:32:39,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:32:39,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792204846] [2023-12-19 04:32:39,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:32:39,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:32:39,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:32:39,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:32:39,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:32:39,559 INFO L87 Difference]: Start difference. First operand 109085 states and 116406 transitions. Second operand has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 04:32:41,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:32:41,154 INFO L93 Difference]: Finished difference Result 215184 states and 229485 transitions. [2023-12-19 04:32:41,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:32:41,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 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 1247 [2023-12-19 04:32:41,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:32:41,287 INFO L225 Difference]: With dead ends: 215184 [2023-12-19 04:32:41,287 INFO L226 Difference]: Without dead ends: 106100 [2023-12-19 04:32:41,343 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 04:32:41,344 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 105 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:32:41,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 645 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 04:32:41,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106100 states. [2023-12-19 04:32:42,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106100 to 92915. [2023-12-19 04:32:42,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92915 states, 92914 states have (on average 1.06313365047248) internal successors, (98780), 92914 states have internal predecessors, (98780), 0 states have call successors, (0), 0 states 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 04:32:42,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92915 states to 92915 states and 98780 transitions. [2023-12-19 04:32:42,650 INFO L78 Accepts]: Start accepts. Automaton has 92915 states and 98780 transitions. Word has length 1247 [2023-12-19 04:32:42,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:32:42,651 INFO L495 AbstractCegarLoop]: Abstraction has 92915 states and 98780 transitions. [2023-12-19 04:32:42,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 04:32:42,651 INFO L276 IsEmpty]: Start isEmpty. Operand 92915 states and 98780 transitions. [2023-12-19 04:32:42,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1268 [2023-12-19 04:32:42,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:32:42,724 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:42,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 04:32:42,724 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:32:42,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:32:42,735 INFO L85 PathProgramCache]: Analyzing trace with hash -89805841, now seen corresponding path program 1 times [2023-12-19 04:32:42,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:32:42,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638290071] [2023-12-19 04:32:42,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:32:42,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:32:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:32:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 2019 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2023-12-19 04:32:43,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:32:43,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638290071] [2023-12-19 04:32:43,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638290071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:32:43,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:32:43,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 04:32:43,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509294172] [2023-12-19 04:32:43,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:32:43,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 04:32:43,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:32:43,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 04:32:43,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:32:43,835 INFO L87 Difference]: Start difference. First operand 92915 states and 98780 transitions. Second operand has 5 states, 5 states have (on average 201.6) internal successors, (1008), 5 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 04:32:46,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:32:46,914 INFO L93 Difference]: Finished difference Result 206686 states and 219570 transitions. [2023-12-19 04:32:46,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 04:32:46,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 201.6) internal successors, (1008), 5 states have internal predecessors, (1008), 0 states have call successors, (0), 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 1267 [2023-12-19 04:32:46,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:32:47,072 INFO L225 Difference]: With dead ends: 206686 [2023-12-19 04:32:47,073 INFO L226 Difference]: Without dead ends: 113347 [2023-12-19 04:32:47,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:32:47,139 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 1119 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:32:47,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 151 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 04:32:47,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113347 states. [2023-12-19 04:32:48,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113347 to 79266. [2023-12-19 04:32:48,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79266 states, 79265 states have (on average 1.060354507033369) internal successors, (84049), 79265 states have internal predecessors, (84049), 0 states have call successors, (0), 0 states 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 04:32:48,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79266 states to 79266 states and 84049 transitions. [2023-12-19 04:32:48,576 INFO L78 Accepts]: Start accepts. Automaton has 79266 states and 84049 transitions. Word has length 1267 [2023-12-19 04:32:48,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:32:48,577 INFO L495 AbstractCegarLoop]: Abstraction has 79266 states and 84049 transitions. [2023-12-19 04:32:48,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.6) internal successors, (1008), 5 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 04:32:48,577 INFO L276 IsEmpty]: Start isEmpty. Operand 79266 states and 84049 transitions. [2023-12-19 04:32:48,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1360 [2023-12-19 04:32:48,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:32:48,643 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:32:48,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 04:32:48,644 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:32:48,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:32:48,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1012575112, now seen corresponding path program 1 times [2023-12-19 04:32:48,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:32:48,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150161922] [2023-12-19 04:32:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:32:48,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:32:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:32:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2879 backedges. 1734 proven. 0 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2023-12-19 04:32:49,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:32:49,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150161922] [2023-12-19 04:32:49,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150161922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:32:49,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:32:49,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:32:49,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172861618] [2023-12-19 04:32:49,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:32:49,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:32:49,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:32:49,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:32:49,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:32:49,763 INFO L87 Difference]: Start difference. First operand 79266 states and 84049 transitions. Second operand has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states 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 04:32:51,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:32:51,424 INFO L93 Difference]: Finished difference Result 164078 states and 174034 transitions. [2023-12-19 04:32:51,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:32:51,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 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 1359 [2023-12-19 04:32:51,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:32:51,534 INFO L225 Difference]: With dead ends: 164078 [2023-12-19 04:32:51,534 INFO L226 Difference]: Without dead ends: 84813 [2023-12-19 04:32:51,565 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 04:32:51,566 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 316 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:32:51,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 192 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 04:32:51,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84813 states. [2023-12-19 04:32:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84813 to 84808. [2023-12-19 04:32:52,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84808 states, 84807 states have (on average 1.0593111417689578) internal successors, (89837), 84807 states have internal predecessors, (89837), 0 states have call successors, (0), 0 states 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 04:32:52,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84808 states to 84808 states and 89837 transitions. [2023-12-19 04:32:52,762 INFO L78 Accepts]: Start accepts. Automaton has 84808 states and 89837 transitions. Word has length 1359 [2023-12-19 04:32:52,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:32:52,762 INFO L495 AbstractCegarLoop]: Abstraction has 84808 states and 89837 transitions. [2023-12-19 04:32:52,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states 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 04:32:52,763 INFO L276 IsEmpty]: Start isEmpty. Operand 84808 states and 89837 transitions. [2023-12-19 04:32:52,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1366 [2023-12-19 04:32:52,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:32:52,841 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:32:52,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 04:32:52,841 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:32:52,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:32:52,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1935512634, now seen corresponding path program 1 times [2023-12-19 04:32:52,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:32:52,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522768924] [2023-12-19 04:32:52,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:32:52,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:32:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:32:53,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 2336 trivial. 0 not checked. [2023-12-19 04:32:53,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:32:53,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522768924] [2023-12-19 04:32:53,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522768924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:32:53,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:32:53,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:32:53,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102960340] [2023-12-19 04:32:53,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:32:53,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:32:53,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:32:53,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:32:53,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:32:53,526 INFO L87 Difference]: Start difference. First operand 84808 states and 89837 transitions. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 04:32:55,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:32:55,015 INFO L93 Difference]: Finished difference Result 172596 states and 182755 transitions. [2023-12-19 04:32:55,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:32:55,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 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 1365 [2023-12-19 04:32:55,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:32:55,114 INFO L225 Difference]: With dead ends: 172596 [2023-12-19 04:32:55,114 INFO L226 Difference]: Without dead ends: 86939 [2023-12-19 04:32:55,157 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 04:32:55,157 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 459 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:32:55,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 538 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 04:32:55,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86939 states. [2023-12-19 04:32:55,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86939 to 80977. [2023-12-19 04:32:56,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80977 states, 80976 states have (on average 1.0588198972535072) internal successors, (85739), 80976 states have internal predecessors, (85739), 0 states have call successors, (0), 0 states 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 04:32:56,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80977 states to 80977 states and 85739 transitions. [2023-12-19 04:32:56,323 INFO L78 Accepts]: Start accepts. Automaton has 80977 states and 85739 transitions. Word has length 1365 [2023-12-19 04:32:56,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:32:56,324 INFO L495 AbstractCegarLoop]: Abstraction has 80977 states and 85739 transitions. [2023-12-19 04:32:56,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 04:32:56,324 INFO L276 IsEmpty]: Start isEmpty. Operand 80977 states and 85739 transitions. [2023-12-19 04:32:56,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1463 [2023-12-19 04:32:56,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:32:56,399 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:32:56,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-19 04:32:56,400 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:32:56,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:32:56,400 INFO L85 PathProgramCache]: Analyzing trace with hash -883042684, now seen corresponding path program 1 times [2023-12-19 04:32:56,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:32:56,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81857876] [2023-12-19 04:32:56,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:32:56,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:32:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:32:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3033 backedges. 453 proven. 901 refuted. 0 times theorem prover too weak. 1679 trivial. 0 not checked. [2023-12-19 04:32:58,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:32:58,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81857876] [2023-12-19 04:32:58,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81857876] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:32:58,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319212036] [2023-12-19 04:32:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:32:58,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:32:58,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:32:58,542 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:32:58,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 04:32:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:32:58,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 1700 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 04:32:58,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:32:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3033 backedges. 954 proven. 82 refuted. 0 times theorem prover too weak. 1997 trivial. 0 not checked. [2023-12-19 04:32:59,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:32:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3033 backedges. 954 proven. 82 refuted. 0 times theorem prover too weak. 1997 trivial. 0 not checked. [2023-12-19 04:32:59,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319212036] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 04:32:59,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 04:32:59,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-12-19 04:32:59,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018746187] [2023-12-19 04:32:59,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 04:32:59,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 04:32:59,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:32:59,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 04:32:59,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:32:59,947 INFO L87 Difference]: Start difference. First operand 80977 states and 85739 transitions. Second operand has 9 states, 9 states have (on average 153.22222222222223) internal successors, (1379), 8 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 04:33:07,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:33:07,246 INFO L93 Difference]: Finished difference Result 185864 states and 196374 transitions. [2023-12-19 04:33:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 04:33:07,247 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 153.22222222222223) internal successors, (1379), 8 states have internal predecessors, (1379), 0 states have call successors, (0), 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 1462 [2023-12-19 04:33:07,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:33:07,382 INFO L225 Difference]: With dead ends: 185864 [2023-12-19 04:33:07,382 INFO L226 Difference]: Without dead ends: 103978 [2023-12-19 04:33:07,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2939 GetRequests, 2919 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-12-19 04:33:07,408 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 7125 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8405 mSolverCounterSat, 1243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7125 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 9648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1243 IncrementalHoareTripleChecker+Valid, 8405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:33:07,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7125 Valid, 225 Invalid, 9648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1243 Valid, 8405 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-19 04:33:07,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103978 states. [2023-12-19 04:33:08,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103978 to 88652. [2023-12-19 04:33:08,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88652 states, 88651 states have (on average 1.0529604854993175) internal successors, (93346), 88651 states have internal predecessors, (93346), 0 states have call successors, (0), 0 states 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 04:33:08,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88652 states to 88652 states and 93346 transitions. [2023-12-19 04:33:08,692 INFO L78 Accepts]: Start accepts. Automaton has 88652 states and 93346 transitions. Word has length 1462 [2023-12-19 04:33:08,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:33:08,692 INFO L495 AbstractCegarLoop]: Abstraction has 88652 states and 93346 transitions. [2023-12-19 04:33:08,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 153.22222222222223) internal successors, (1379), 8 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 04:33:08,692 INFO L276 IsEmpty]: Start isEmpty. Operand 88652 states and 93346 transitions. [2023-12-19 04:33:08,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1539 [2023-12-19 04:33:08,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:33:08,774 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 04:33:08,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 04:33:08,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:33:08,982 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:33:08,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:33:08,982 INFO L85 PathProgramCache]: Analyzing trace with hash -909674372, now seen corresponding path program 1 times [2023-12-19 04:33:08,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:33:08,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451101460] [2023-12-19 04:33:08,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:33:08,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:33:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:33:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3718 backedges. 1454 proven. 0 refuted. 0 times theorem prover too weak. 2264 trivial. 0 not checked. [2023-12-19 04:33:10,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:33:10,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451101460] [2023-12-19 04:33:10,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451101460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:33:10,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:33:10,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:33:10,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397440916] [2023-12-19 04:33:10,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:33:10,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 04:33:10,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:33:10,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 04:33:10,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:33:10,769 INFO L87 Difference]: Start difference. First operand 88652 states and 93346 transitions. Second operand has 5 states, 5 states have (on average 137.8) internal successors, (689), 4 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 04:33:12,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:33:12,725 INFO L93 Difference]: Finished difference Result 177396 states and 186807 transitions. [2023-12-19 04:33:12,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 04:33:12,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 137.8) internal successors, (689), 4 states have internal predecessors, (689), 0 states have call successors, (0), 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 1538 [2023-12-19 04:33:12,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:33:12,829 INFO L225 Difference]: With dead ends: 177396 [2023-12-19 04:33:12,829 INFO L226 Difference]: Without dead ends: 88649 [2023-12-19 04:33:12,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:33:12,872 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 770 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2124 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 2139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:33:12,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 105 Invalid, 2139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2124 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:33:12,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88649 states. [2023-12-19 04:33:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88649 to 88646. [2023-12-19 04:33:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88646 states, 88645 states have (on average 1.052704608268938) internal successors, (93317), 88645 states have internal predecessors, (93317), 0 states have call successors, (0), 0 states 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 04:33:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88646 states to 88646 states and 93317 transitions. [2023-12-19 04:33:13,906 INFO L78 Accepts]: Start accepts. Automaton has 88646 states and 93317 transitions. Word has length 1538 [2023-12-19 04:33:13,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:33:13,907 INFO L495 AbstractCegarLoop]: Abstraction has 88646 states and 93317 transitions. [2023-12-19 04:33:13,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.8) internal successors, (689), 4 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 04:33:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 88646 states and 93317 transitions. [2023-12-19 04:33:14,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1695 [2023-12-19 04:33:14,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:33:14,235 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-19 04:33:14,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-19 04:33:14,236 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:33:14,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:33:14,236 INFO L85 PathProgramCache]: Analyzing trace with hash 299780528, now seen corresponding path program 1 times [2023-12-19 04:33:14,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:33:14,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987038531] [2023-12-19 04:33:14,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:33:14,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:33:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:33:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4333 backedges. 3303 proven. 0 refuted. 0 times theorem prover too weak. 1030 trivial. 0 not checked. [2023-12-19 04:33:15,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:33:15,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987038531] [2023-12-19 04:33:15,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987038531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:33:15,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:33:15,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:33:15,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042556172] [2023-12-19 04:33:15,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:33:15,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:33:15,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:33:15,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:33:15,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:33:15,887 INFO L87 Difference]: Start difference. First operand 88646 states and 93317 transitions. Second operand has 4 states, 4 states have (on average 296.5) internal successors, (1186), 4 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states 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 04:33:18,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:33:18,341 INFO L93 Difference]: Finished difference Result 201578 states and 212102 transitions. [2023-12-19 04:33:18,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:33:18,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 296.5) internal successors, (1186), 4 states have internal predecessors, (1186), 0 states have call successors, (0), 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 1694 [2023-12-19 04:33:18,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:33:18,342 INFO L225 Difference]: With dead ends: 201578 [2023-12-19 04:33:18,342 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 04:33:18,403 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 04:33:18,403 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 380 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 2106 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 2106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:33:18,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 107 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 2106 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 04:33:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 04:33:18,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 04:33:18,404 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 04:33:18,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 04:33:18,404 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1694 [2023-12-19 04:33:18,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:33:18,404 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 04:33:18,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 296.5) internal successors, (1186), 4 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states 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 04:33:18,404 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 04:33:18,404 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 04:33:18,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 04:33:18,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-19 04:33:18,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.