/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:05:50,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:05:50,802 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 01:05:50,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:05:50,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:05:50,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:05:50,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:05:50,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:05:50,830 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:05:50,833 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:05:50,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:05:50,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:05:50,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:05:50,836 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:05:50,836 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:05:50,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:05:50,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:05:50,836 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:05:50,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:05:50,837 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:05:50,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:05:50,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:05:50,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:05:50,838 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:05:50,838 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:05:50,838 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:05:50,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:05:50,838 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:05:50,839 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:05:50,839 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:05:50,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:05:50,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:05:50,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:05:50,840 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:05:50,840 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:05:50,840 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:05:50,840 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:05:50,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:05:50,841 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:05:50,841 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:05:50,841 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:05:50,841 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:05:50,841 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:05:50,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:05:51,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:05:51,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:05:51,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:05:51,046 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:05:51,046 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:05:51,047 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c [2023-12-20 01:05:52,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:05:52,370 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:05:52,370 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c [2023-12-20 01:05:52,389 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/570597739/19d29dbbcc7346878f7e82a2aa90aa3d/FLAGf7909c776 [2023-12-20 01:05:52,400 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/570597739/19d29dbbcc7346878f7e82a2aa90aa3d [2023-12-20 01:05:52,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:05:52,403 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:05:52,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:05:52,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:05:52,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:05:52,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:05:52" (1/1) ... [2023-12-20 01:05:52,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3916e3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:52, skipping insertion in model container [2023-12-20 01:05:52,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:05:52" (1/1) ... [2023-12-20 01:05:52,446 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:05:52,585 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c[16852,16865] [2023-12-20 01:05:52,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:05:52,609 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:05:52,669 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c[16852,16865] [2023-12-20 01:05:52,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:05:52,684 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:05:52,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:52 WrapperNode [2023-12-20 01:05:52,684 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:05:52,685 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:05:52,685 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:05:52,685 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:05:52,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:52" (1/1) ... [2023-12-20 01:05:52,699 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:52" (1/1) ... [2023-12-20 01:05:52,729 INFO L138 Inliner]: procedures = 26, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 439 [2023-12-20 01:05:52,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:05:52,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:05:52,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:05:52,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:05:52,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:52" (1/1) ... [2023-12-20 01:05:52,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:52" (1/1) ... [2023-12-20 01:05:52,741 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:52" (1/1) ... [2023-12-20 01:05:52,752 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 01:05:52,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:52" (1/1) ... [2023-12-20 01:05:52,752 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:52" (1/1) ... [2023-12-20 01:05:52,767 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:52" (1/1) ... [2023-12-20 01:05:52,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:52" (1/1) ... [2023-12-20 01:05:52,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:52" (1/1) ... [2023-12-20 01:05:52,775 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:52" (1/1) ... [2023-12-20 01:05:52,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:05:52,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:05:52,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:05:52,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:05:52,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:52" (1/1) ... [2023-12-20 01:05:52,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:05:52,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:05:52,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 01:05:52,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 01:05:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:05:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:05:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:05:52,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:05:52,951 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:05:52,952 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:05:53,271 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:05:53,312 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:05:53,312 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:05:53,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:05:53 BoogieIcfgContainer [2023-12-20 01:05:53,313 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:05:53,314 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:05:53,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:05:53,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:05:53,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:05:52" (1/3) ... [2023-12-20 01:05:53,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4552e6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:05:53, skipping insertion in model container [2023-12-20 01:05:53,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:52" (2/3) ... [2023-12-20 01:05:53,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4552e6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:05:53, skipping insertion in model container [2023-12-20 01:05:53,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:05:53" (3/3) ... [2023-12-20 01:05:53,318 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c [2023-12-20 01:05:53,329 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:05:53,330 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:05:53,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:05:53,405 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;@54360d95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:05:53,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:05:53,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 115 states have (on average 1.791304347826087) internal successors, (206), 116 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:53,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 01:05:53,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:53,418 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] [2023-12-20 01:05:53,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:53,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash -497603959, now seen corresponding path program 1 times [2023-12-20 01:05:53,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:53,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365164342] [2023-12-20 01:05:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:53,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:53,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:53,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365164342] [2023-12-20 01:05:53,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365164342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:53,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:53,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:05:53,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820049859] [2023-12-20 01:05:53,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:53,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:05:53,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:53,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:05:53,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:05:53,916 INFO L87 Difference]: Start difference. First operand has 117 states, 115 states have (on average 1.791304347826087) internal successors, (206), 116 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:54,014 INFO L93 Difference]: Finished difference Result 190 states and 328 transitions. [2023-12-20 01:05:54,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:05:54,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-20 01:05:54,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:54,023 INFO L225 Difference]: With dead ends: 190 [2023-12-20 01:05:54,023 INFO L226 Difference]: Without dead ends: 115 [2023-12-20 01:05:54,026 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 [2023-12-20 01:05:54,028 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 0 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:54,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 550 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:05:54,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-20 01:05:54,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-12-20 01:05:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.4035087719298245) internal successors, (160), 114 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 160 transitions. [2023-12-20 01:05:54,068 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 160 transitions. Word has length 34 [2023-12-20 01:05:54,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:54,068 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 160 transitions. [2023-12-20 01:05:54,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,068 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 160 transitions. [2023-12-20 01:05:54,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:05:54,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:54,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:54,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:05:54,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:54,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:54,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2100041171, now seen corresponding path program 1 times [2023-12-20 01:05:54,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:54,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220114398] [2023-12-20 01:05:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:54,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:54,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:54,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220114398] [2023-12-20 01:05:54,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220114398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:54,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:54,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:54,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337605995] [2023-12-20 01:05:54,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:54,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:54,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:54,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:54,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:54,133 INFO L87 Difference]: Start difference. First operand 115 states and 160 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:54,151 INFO L93 Difference]: Finished difference Result 247 states and 376 transitions. [2023-12-20 01:05:54,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:54,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-20 01:05:54,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:54,153 INFO L225 Difference]: With dead ends: 247 [2023-12-20 01:05:54,153 INFO L226 Difference]: Without dead ends: 177 [2023-12-20 01:05:54,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:54,154 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 91 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:54,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 324 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:54,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-20 01:05:54,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2023-12-20 01:05:54,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.4885057471264367) internal successors, (259), 174 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 259 transitions. [2023-12-20 01:05:54,163 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 259 transitions. Word has length 74 [2023-12-20 01:05:54,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:54,163 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 259 transitions. [2023-12-20 01:05:54,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,163 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 259 transitions. [2023-12-20 01:05:54,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:05:54,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:54,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:54,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:05:54,165 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:54,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:54,165 INFO L85 PathProgramCache]: Analyzing trace with hash 891129074, now seen corresponding path program 1 times [2023-12-20 01:05:54,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:54,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788793297] [2023-12-20 01:05:54,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:54,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:54,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:54,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788793297] [2023-12-20 01:05:54,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788793297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:54,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:54,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:54,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954542474] [2023-12-20 01:05:54,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:54,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:54,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:54,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:54,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:54,248 INFO L87 Difference]: Start difference. First operand 175 states and 259 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:54,272 INFO L93 Difference]: Finished difference Result 419 states and 659 transitions. [2023-12-20 01:05:54,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:54,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-20 01:05:54,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:54,277 INFO L225 Difference]: With dead ends: 419 [2023-12-20 01:05:54,277 INFO L226 Difference]: Without dead ends: 289 [2023-12-20 01:05:54,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:54,282 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 87 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:54,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 321 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:54,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-20 01:05:54,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2023-12-20 01:05:54,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.5454545454545454) internal successors, (442), 286 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 442 transitions. [2023-12-20 01:05:54,301 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 442 transitions. Word has length 74 [2023-12-20 01:05:54,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:54,301 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 442 transitions. [2023-12-20 01:05:54,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,302 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 442 transitions. [2023-12-20 01:05:54,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:05:54,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:54,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:54,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:05:54,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:54,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:54,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1802333073, now seen corresponding path program 1 times [2023-12-20 01:05:54,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:54,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044032755] [2023-12-20 01:05:54,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:54,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:54,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:54,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044032755] [2023-12-20 01:05:54,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044032755] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:54,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:54,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 01:05:54,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056431786] [2023-12-20 01:05:54,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:54,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 01:05:54,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:54,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 01:05:54,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:05:54,504 INFO L87 Difference]: Start difference. First operand 287 states and 442 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:54,664 INFO L93 Difference]: Finished difference Result 1981 states and 3221 transitions. [2023-12-20 01:05:54,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 01:05:54,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-20 01:05:54,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:54,672 INFO L225 Difference]: With dead ends: 1981 [2023-12-20 01:05:54,672 INFO L226 Difference]: Without dead ends: 1739 [2023-12-20 01:05:54,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-20 01:05:54,694 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 1814 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:54,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1814 Valid, 1337 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:05:54,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2023-12-20 01:05:54,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 527. [2023-12-20 01:05:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.5779467680608366) internal successors, (830), 526 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 830 transitions. [2023-12-20 01:05:54,729 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 830 transitions. Word has length 74 [2023-12-20 01:05:54,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:54,730 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 830 transitions. [2023-12-20 01:05:54,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,731 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 830 transitions. [2023-12-20 01:05:54,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-20 01:05:54,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:54,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:54,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:05:54,734 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:54,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:54,735 INFO L85 PathProgramCache]: Analyzing trace with hash 24690921, now seen corresponding path program 1 times [2023-12-20 01:05:54,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:54,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073025836] [2023-12-20 01:05:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:54,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:54,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:54,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073025836] [2023-12-20 01:05:54,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073025836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:54,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:54,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:05:54,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642052139] [2023-12-20 01:05:54,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:54,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:05:54,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:54,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:05:54,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:05:54,899 INFO L87 Difference]: Start difference. First operand 527 states and 830 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:54,919 INFO L93 Difference]: Finished difference Result 553 states and 863 transitions. [2023-12-20 01:05:54,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:05:54,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-12-20 01:05:54,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:54,923 INFO L225 Difference]: With dead ends: 553 [2023-12-20 01:05:54,923 INFO L226 Difference]: Without dead ends: 551 [2023-12-20 01:05:54,923 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 [2023-12-20 01:05:54,923 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:54,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 461 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:54,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-12-20 01:05:54,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 543. [2023-12-20 01:05:54,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 542 states have (on average 1.5608856088560885) internal successors, (846), 542 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 846 transitions. [2023-12-20 01:05:54,939 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 846 transitions. Word has length 75 [2023-12-20 01:05:54,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:54,940 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 846 transitions. [2023-12-20 01:05:54,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:54,940 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 846 transitions. [2023-12-20 01:05:54,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 01:05:54,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:54,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:54,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:05:54,943 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:54,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:54,944 INFO L85 PathProgramCache]: Analyzing trace with hash 766420409, now seen corresponding path program 1 times [2023-12-20 01:05:54,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:54,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850127617] [2023-12-20 01:05:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:54,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:55,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:55,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850127617] [2023-12-20 01:05:55,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850127617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:55,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:55,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:55,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441815599] [2023-12-20 01:05:55,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:55,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:55,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:55,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:55,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:55,043 INFO L87 Difference]: Start difference. First operand 543 states and 846 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:55,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:55,067 INFO L93 Difference]: Finished difference Result 1483 states and 2352 transitions. [2023-12-20 01:05:55,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:55,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-20 01:05:55,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:55,071 INFO L225 Difference]: With dead ends: 1483 [2023-12-20 01:05:55,071 INFO L226 Difference]: Without dead ends: 985 [2023-12-20 01:05:55,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:55,072 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 75 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:55,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 263 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:55,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2023-12-20 01:05:55,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 975. [2023-12-20 01:05:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.566735112936345) internal successors, (1526), 974 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1526 transitions. [2023-12-20 01:05:55,099 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1526 transitions. Word has length 76 [2023-12-20 01:05:55,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:55,100 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1526 transitions. [2023-12-20 01:05:55,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:55,100 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1526 transitions. [2023-12-20 01:05:55,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 01:05:55,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:55,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:55,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:05:55,101 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:55,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:55,101 INFO L85 PathProgramCache]: Analyzing trace with hash -2044823728, now seen corresponding path program 1 times [2023-12-20 01:05:55,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:55,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983579420] [2023-12-20 01:05:55,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:55,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:55,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:55,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983579420] [2023-12-20 01:05:55,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983579420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:55,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:55,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:55,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752011698] [2023-12-20 01:05:55,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:55,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:55,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:55,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:55,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:55,148 INFO L87 Difference]: Start difference. First operand 975 states and 1526 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:55,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:55,182 INFO L93 Difference]: Finished difference Result 2707 states and 4264 transitions. [2023-12-20 01:05:55,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:55,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-20 01:05:55,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:55,186 INFO L225 Difference]: With dead ends: 2707 [2023-12-20 01:05:55,186 INFO L226 Difference]: Without dead ends: 1777 [2023-12-20 01:05:55,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:55,188 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 83 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:55,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 319 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:55,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2023-12-20 01:05:55,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1775. [2023-12-20 01:05:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1774 states have (on average 1.5591882750845547) internal successors, (2766), 1774 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:55,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2766 transitions. [2023-12-20 01:05:55,247 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2766 transitions. Word has length 77 [2023-12-20 01:05:55,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:55,247 INFO L495 AbstractCegarLoop]: Abstraction has 1775 states and 2766 transitions. [2023-12-20 01:05:55,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:55,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2766 transitions. [2023-12-20 01:05:55,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 01:05:55,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:55,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:55,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:05:55,248 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:55,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:55,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1328794960, now seen corresponding path program 1 times [2023-12-20 01:05:55,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:55,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971600945] [2023-12-20 01:05:55,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:55,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:55,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:55,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971600945] [2023-12-20 01:05:55,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971600945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:55,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:55,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:55,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558848660] [2023-12-20 01:05:55,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:55,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:55,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:55,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:55,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:55,289 INFO L87 Difference]: Start difference. First operand 1775 states and 2766 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:55,335 INFO L93 Difference]: Finished difference Result 4979 states and 7760 transitions. [2023-12-20 01:05:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:55,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-20 01:05:55,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:55,343 INFO L225 Difference]: With dead ends: 4979 [2023-12-20 01:05:55,343 INFO L226 Difference]: Without dead ends: 3249 [2023-12-20 01:05:55,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:55,346 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 95 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:55,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 338 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:55,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3249 states. [2023-12-20 01:05:55,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3249 to 3247. [2023-12-20 01:05:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3247 states, 3246 states have (on average 1.5422057917436844) internal successors, (5006), 3246 states have internal predecessors, (5006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 5006 transitions. [2023-12-20 01:05:55,417 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 5006 transitions. Word has length 77 [2023-12-20 01:05:55,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:55,417 INFO L495 AbstractCegarLoop]: Abstraction has 3247 states and 5006 transitions. [2023-12-20 01:05:55,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:55,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 5006 transitions. [2023-12-20 01:05:55,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 01:05:55,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:55,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:55,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:05:55,418 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:55,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:55,419 INFO L85 PathProgramCache]: Analyzing trace with hash -964494384, now seen corresponding path program 1 times [2023-12-20 01:05:55,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:55,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006706464] [2023-12-20 01:05:55,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:55,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:55,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:55,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:55,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006706464] [2023-12-20 01:05:55,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006706464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:55,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:55,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:55,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458290898] [2023-12-20 01:05:55,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:55,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:55,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:55,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:55,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:55,461 INFO L87 Difference]: Start difference. First operand 3247 states and 5006 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:55,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:55,547 INFO L93 Difference]: Finished difference Result 9139 states and 14032 transitions. [2023-12-20 01:05:55,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:55,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-20 01:05:55,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:55,564 INFO L225 Difference]: With dead ends: 9139 [2023-12-20 01:05:55,564 INFO L226 Difference]: Without dead ends: 5937 [2023-12-20 01:05:55,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:55,569 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 99 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:55,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 351 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:55,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5937 states. [2023-12-20 01:05:55,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5937 to 5935. [2023-12-20 01:05:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5935 states, 5934 states have (on average 1.5176946410515673) internal successors, (9006), 5934 states have internal predecessors, (9006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5935 states to 5935 states and 9006 transitions. [2023-12-20 01:05:55,714 INFO L78 Accepts]: Start accepts. Automaton has 5935 states and 9006 transitions. Word has length 77 [2023-12-20 01:05:55,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:55,715 INFO L495 AbstractCegarLoop]: Abstraction has 5935 states and 9006 transitions. [2023-12-20 01:05:55,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:55,715 INFO L276 IsEmpty]: Start isEmpty. Operand 5935 states and 9006 transitions. [2023-12-20 01:05:55,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 01:05:55,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:55,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:55,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:05:55,716 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:55,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:55,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1615405178, now seen corresponding path program 1 times [2023-12-20 01:05:55,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:55,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108604459] [2023-12-20 01:05:55,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:55,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:55,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:55,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:55,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108604459] [2023-12-20 01:05:55,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108604459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:55,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:55,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:55,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107150055] [2023-12-20 01:05:55,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:55,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:55,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:55,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:55,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:55,750 INFO L87 Difference]: Start difference. First operand 5935 states and 9006 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:55,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:55,894 INFO L93 Difference]: Finished difference Result 11766 states and 17972 transitions. [2023-12-20 01:05:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:55,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-20 01:05:55,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:55,914 INFO L225 Difference]: With dead ends: 11766 [2023-12-20 01:05:55,914 INFO L226 Difference]: Without dead ends: 8563 [2023-12-20 01:05:55,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:55,917 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 100 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:55,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 362 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:55,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8563 states. [2023-12-20 01:05:56,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8563 to 8561. [2023-12-20 01:05:56,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8561 states, 8560 states have (on average 1.5121495327102803) internal successors, (12944), 8560 states have internal predecessors, (12944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:56,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8561 states to 8561 states and 12944 transitions. [2023-12-20 01:05:56,123 INFO L78 Accepts]: Start accepts. Automaton has 8561 states and 12944 transitions. Word has length 78 [2023-12-20 01:05:56,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:56,123 INFO L495 AbstractCegarLoop]: Abstraction has 8561 states and 12944 transitions. [2023-12-20 01:05:56,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:56,123 INFO L276 IsEmpty]: Start isEmpty. Operand 8561 states and 12944 transitions. [2023-12-20 01:05:56,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 01:05:56,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:56,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:56,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:05:56,127 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:56,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:56,128 INFO L85 PathProgramCache]: Analyzing trace with hash -73320128, now seen corresponding path program 1 times [2023-12-20 01:05:56,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:56,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66136672] [2023-12-20 01:05:56,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:56,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:56,256 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 01:05:56,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:56,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66136672] [2023-12-20 01:05:56,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66136672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:56,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:56,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 01:05:56,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732096686] [2023-12-20 01:05:56,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:56,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 01:05:56,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:56,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 01:05:56,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:05:56,258 INFO L87 Difference]: Start difference. First operand 8561 states and 12944 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:56,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:56,659 INFO L93 Difference]: Finished difference Result 32863 states and 50247 transitions. [2023-12-20 01:05:56,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 01:05:56,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 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 107 [2023-12-20 01:05:56,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:56,717 INFO L225 Difference]: With dead ends: 32863 [2023-12-20 01:05:56,718 INFO L226 Difference]: Without dead ends: 28573 [2023-12-20 01:05:56,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 01:05:56,732 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1423 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:56,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 1284 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:05:56,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28573 states. [2023-12-20 01:05:57,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28573 to 12785. [2023-12-20 01:05:57,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12785 states, 12784 states have (on average 1.5118898623279098) internal successors, (19328), 12784 states have internal predecessors, (19328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12785 states to 12785 states and 19328 transitions. [2023-12-20 01:05:57,144 INFO L78 Accepts]: Start accepts. Automaton has 12785 states and 19328 transitions. Word has length 107 [2023-12-20 01:05:57,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:57,145 INFO L495 AbstractCegarLoop]: Abstraction has 12785 states and 19328 transitions. [2023-12-20 01:05:57,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 12785 states and 19328 transitions. [2023-12-20 01:05:57,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 01:05:57,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:57,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:57,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 01:05:57,150 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:57,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:57,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1875251650, now seen corresponding path program 1 times [2023-12-20 01:05:57,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:57,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107091265] [2023-12-20 01:05:57,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:57,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 01:05:57,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:57,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107091265] [2023-12-20 01:05:57,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107091265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:57,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:57,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 01:05:57,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038102678] [2023-12-20 01:05:57,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:57,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 01:05:57,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:57,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 01:05:57,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:05:57,274 INFO L87 Difference]: Start difference. First operand 12785 states and 19328 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:57,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:57,819 INFO L93 Difference]: Finished difference Result 37087 states and 56631 transitions. [2023-12-20 01:05:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 01:05:57,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 107 [2023-12-20 01:05:57,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:57,871 INFO L225 Difference]: With dead ends: 37087 [2023-12-20 01:05:57,871 INFO L226 Difference]: Without dead ends: 32797 [2023-12-20 01:05:57,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 01:05:57,886 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1530 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:57,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 1226 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:05:57,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32797 states. [2023-12-20 01:05:58,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32797 to 17009. [2023-12-20 01:05:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17009 states, 17008 states have (on average 1.5117591721542802) internal successors, (25712), 17008 states have internal predecessors, (25712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17009 states to 17009 states and 25712 transitions. [2023-12-20 01:05:58,384 INFO L78 Accepts]: Start accepts. Automaton has 17009 states and 25712 transitions. Word has length 107 [2023-12-20 01:05:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:58,384 INFO L495 AbstractCegarLoop]: Abstraction has 17009 states and 25712 transitions. [2023-12-20 01:05:58,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 17009 states and 25712 transitions. [2023-12-20 01:05:58,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 01:05:58,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:58,390 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:05:58,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:05:58,390 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:58,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:58,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1408420893, now seen corresponding path program 1 times [2023-12-20 01:05:58,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:58,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471197837] [2023-12-20 01:05:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:58,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-20 01:05:58,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:58,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471197837] [2023-12-20 01:05:58,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471197837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:58,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:58,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 01:05:58,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983576826] [2023-12-20 01:05:58,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:58,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 01:05:58,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:58,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 01:05:58,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:05:58,535 INFO L87 Difference]: Start difference. First operand 17009 states and 25712 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:59,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:59,031 INFO L93 Difference]: Finished difference Result 41311 states and 63015 transitions. [2023-12-20 01:05:59,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 01:05:59,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 107 [2023-12-20 01:05:59,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:59,091 INFO L225 Difference]: With dead ends: 41311 [2023-12-20 01:05:59,091 INFO L226 Difference]: Without dead ends: 37021 [2023-12-20 01:05:59,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 01:05:59,108 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1383 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:59,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 1309 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:05:59,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37021 states. [2023-12-20 01:05:59,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37021 to 21233. [2023-12-20 01:05:59,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21233 states, 21232 states have (on average 1.5116804822908816) internal successors, (32096), 21232 states have internal predecessors, (32096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21233 states to 21233 states and 32096 transitions. [2023-12-20 01:05:59,659 INFO L78 Accepts]: Start accepts. Automaton has 21233 states and 32096 transitions. Word has length 107 [2023-12-20 01:05:59,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:59,659 INFO L495 AbstractCegarLoop]: Abstraction has 21233 states and 32096 transitions. [2023-12-20 01:05:59,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:59,659 INFO L276 IsEmpty]: Start isEmpty. Operand 21233 states and 32096 transitions. [2023-12-20 01:05:59,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 01:05:59,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:59,666 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:05:59,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:05:59,666 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:59,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:59,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1787290815, now seen corresponding path program 1 times [2023-12-20 01:05:59,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:59,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421849164] [2023-12-20 01:05:59,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:59,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 01:05:59,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:59,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421849164] [2023-12-20 01:05:59,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421849164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:59,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:59,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 01:05:59,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513699030] [2023-12-20 01:05:59,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:59,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 01:05:59,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:59,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 01:05:59,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:05:59,814 INFO L87 Difference]: Start difference. First operand 21233 states and 32096 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:00,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:00,469 INFO L93 Difference]: Finished difference Result 45535 states and 69399 transitions. [2023-12-20 01:06:00,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 01:06:00,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 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 107 [2023-12-20 01:06:00,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:00,530 INFO L225 Difference]: With dead ends: 45535 [2023-12-20 01:06:00,530 INFO L226 Difference]: Without dead ends: 41245 [2023-12-20 01:06:00,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 01:06:00,540 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1238 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:00,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 1528 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:06:00,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41245 states. [2023-12-20 01:06:01,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41245 to 25457. [2023-12-20 01:06:01,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25457 states, 25456 states have (on average 1.5116279069767442) internal successors, (38480), 25456 states have internal predecessors, (38480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:01,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25457 states to 25457 states and 38480 transitions. [2023-12-20 01:06:01,125 INFO L78 Accepts]: Start accepts. Automaton has 25457 states and 38480 transitions. Word has length 107 [2023-12-20 01:06:01,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:01,125 INFO L495 AbstractCegarLoop]: Abstraction has 25457 states and 38480 transitions. [2023-12-20 01:06:01,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:01,125 INFO L276 IsEmpty]: Start isEmpty. Operand 25457 states and 38480 transitions. [2023-12-20 01:06:01,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 01:06:01,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:01,131 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:06:01,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:06:01,131 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:01,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:01,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1422990239, now seen corresponding path program 1 times [2023-12-20 01:06:01,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:01,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826930552] [2023-12-20 01:06:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:01,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 01:06:01,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:01,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826930552] [2023-12-20 01:06:01,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826930552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:01,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:01,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 01:06:01,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620134139] [2023-12-20 01:06:01,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:01,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 01:06:01,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:01,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 01:06:01,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:06:01,270 INFO L87 Difference]: Start difference. First operand 25457 states and 38480 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:02,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:02,040 INFO L93 Difference]: Finished difference Result 49759 states and 75783 transitions. [2023-12-20 01:06:02,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 01:06:02,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 107 [2023-12-20 01:06:02,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:02,091 INFO L225 Difference]: With dead ends: 49759 [2023-12-20 01:06:02,091 INFO L226 Difference]: Without dead ends: 45469 [2023-12-20 01:06:02,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 01:06:02,103 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 1278 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:02,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1278 Valid, 1490 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:06:02,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45469 states. [2023-12-20 01:06:02,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45469 to 29681. [2023-12-20 01:06:02,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29681 states, 29680 states have (on average 1.5115902964959569) internal successors, (44864), 29680 states have internal predecessors, (44864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:02,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29681 states to 29681 states and 44864 transitions. [2023-12-20 01:06:02,902 INFO L78 Accepts]: Start accepts. Automaton has 29681 states and 44864 transitions. Word has length 107 [2023-12-20 01:06:02,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:02,902 INFO L495 AbstractCegarLoop]: Abstraction has 29681 states and 44864 transitions. [2023-12-20 01:06:02,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:02,903 INFO L276 IsEmpty]: Start isEmpty. Operand 29681 states and 44864 transitions. [2023-12-20 01:06:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 01:06:02,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:02,911 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:06:02,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:06:02,911 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:02,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:02,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2017407539, now seen corresponding path program 1 times [2023-12-20 01:06:02,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:02,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311074693] [2023-12-20 01:06:02,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:02,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:03,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:03,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311074693] [2023-12-20 01:06:03,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311074693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:03,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:03,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:06:03,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891531249] [2023-12-20 01:06:03,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:03,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:06:03,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:03,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:06:03,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:03,011 INFO L87 Difference]: Start difference. First operand 29681 states and 44864 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:03,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:03,513 INFO L93 Difference]: Finished difference Result 59317 states and 89682 transitions. [2023-12-20 01:06:03,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:06:03,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2023-12-20 01:06:03,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:03,545 INFO L225 Difference]: With dead ends: 59317 [2023-12-20 01:06:03,545 INFO L226 Difference]: Without dead ends: 29683 [2023-12-20 01:06:03,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:03,563 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 79 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:03,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 352 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:03,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29683 states. [2023-12-20 01:06:04,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29683 to 29681. [2023-12-20 01:06:04,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29681 states, 29680 states have (on average 1.5002695417789758) internal successors, (44528), 29680 states have internal predecessors, (44528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:04,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29681 states to 29681 states and 44528 transitions. [2023-12-20 01:06:04,174 INFO L78 Accepts]: Start accepts. Automaton has 29681 states and 44528 transitions. Word has length 108 [2023-12-20 01:06:04,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:04,174 INFO L495 AbstractCegarLoop]: Abstraction has 29681 states and 44528 transitions. [2023-12-20 01:06:04,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:04,174 INFO L276 IsEmpty]: Start isEmpty. Operand 29681 states and 44528 transitions. [2023-12-20 01:06:04,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 01:06:04,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:04,181 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:06:04,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 01:06:04,181 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:04,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:04,182 INFO L85 PathProgramCache]: Analyzing trace with hash -230264466, now seen corresponding path program 1 times [2023-12-20 01:06:04,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:04,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729974392] [2023-12-20 01:06:04,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:04,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:04,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:04,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729974392] [2023-12-20 01:06:04,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729974392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:04,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:04,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:06:04,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550835403] [2023-12-20 01:06:04,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:04,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:06:04,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:04,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:06:04,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:04,253 INFO L87 Difference]: Start difference. First operand 29681 states and 44528 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:04,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:04,456 INFO L93 Difference]: Finished difference Result 44501 states and 66770 transitions. [2023-12-20 01:06:04,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:06:04,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2023-12-20 01:06:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:04,473 INFO L225 Difference]: With dead ends: 44501 [2023-12-20 01:06:04,473 INFO L226 Difference]: Without dead ends: 14867 [2023-12-20 01:06:04,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:04,490 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 73 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:04,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 333 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14867 states. [2023-12-20 01:06:04,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14867 to 14865. [2023-12-20 01:06:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14865 states, 14864 states have (on average 1.4881593110871905) internal successors, (22120), 14864 states have internal predecessors, (22120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:04,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14865 states to 14865 states and 22120 transitions. [2023-12-20 01:06:04,863 INFO L78 Accepts]: Start accepts. Automaton has 14865 states and 22120 transitions. Word has length 108 [2023-12-20 01:06:04,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:04,864 INFO L495 AbstractCegarLoop]: Abstraction has 14865 states and 22120 transitions. [2023-12-20 01:06:04,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:04,864 INFO L276 IsEmpty]: Start isEmpty. Operand 14865 states and 22120 transitions. [2023-12-20 01:06:04,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 01:06:04,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:04,866 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:06:04,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:06:04,866 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:04,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:04,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1168706959, now seen corresponding path program 1 times [2023-12-20 01:06:04,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:04,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771490357] [2023-12-20 01:06:04,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:04,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:04,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:04,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771490357] [2023-12-20 01:06:04,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771490357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:04,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:04,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:06:04,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557010673] [2023-12-20 01:06:04,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:04,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:06:04,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:04,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:06:04,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:04,966 INFO L87 Difference]: Start difference. First operand 14865 states and 22120 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:05,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:05,101 INFO L93 Difference]: Finished difference Result 22277 states and 33158 transitions. [2023-12-20 01:06:05,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:06:05,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2023-12-20 01:06:05,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:05,109 INFO L225 Difference]: With dead ends: 22277 [2023-12-20 01:06:05,109 INFO L226 Difference]: Without dead ends: 7459 [2023-12-20 01:06:05,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:05,118 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 67 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:05,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 308 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7459 states. [2023-12-20 01:06:05,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7459 to 7457. [2023-12-20 01:06:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7457 states, 7456 states have (on average 1.4753218884120172) internal successors, (11000), 7456 states have internal predecessors, (11000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:05,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7457 states to 7457 states and 11000 transitions. [2023-12-20 01:06:05,280 INFO L78 Accepts]: Start accepts. Automaton has 7457 states and 11000 transitions. Word has length 108 [2023-12-20 01:06:05,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:05,280 INFO L495 AbstractCegarLoop]: Abstraction has 7457 states and 11000 transitions. [2023-12-20 01:06:05,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:05,280 INFO L276 IsEmpty]: Start isEmpty. Operand 7457 states and 11000 transitions. [2023-12-20 01:06:05,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 01:06:05,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:05,283 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:06:05,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 01:06:05,283 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:05,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:05,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1174138064, now seen corresponding path program 1 times [2023-12-20 01:06:05,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:05,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186854239] [2023-12-20 01:06:05,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:05,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:06,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:06,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186854239] [2023-12-20 01:06:06,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186854239] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:06:06,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016505795] [2023-12-20 01:06:06,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:06,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:06:06,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:06:06,286 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:06:06,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 01:06:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:06,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 01:06:06,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:06:06,528 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:06:06,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:06:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:06:06,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016505795] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:06:06,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:06:06,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 16 [2023-12-20 01:06:06,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087027260] [2023-12-20 01:06:06,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:06:06,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 01:06:06,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:06,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 01:06:06,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-20 01:06:06,674 INFO L87 Difference]: Start difference. First operand 7457 states and 11000 transitions. Second operand has 16 states, 16 states have (on average 19.5625) internal successors, (313), 16 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:10,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:10,879 INFO L93 Difference]: Finished difference Result 67535 states and 98137 transitions. [2023-12-20 01:06:10,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-20 01:06:10,880 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.5625) internal successors, (313), 16 states have internal predecessors, (313), 0 states have call successors, (0), 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 108 [2023-12-20 01:06:10,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:10,959 INFO L225 Difference]: With dead ends: 67535 [2023-12-20 01:06:10,959 INFO L226 Difference]: Without dead ends: 62437 [2023-12-20 01:06:10,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1926 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=927, Invalid=4925, Unknown=0, NotChecked=0, Total=5852 [2023-12-20 01:06:10,984 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 6509 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6509 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:10,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6509 Valid, 2294 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 01:06:11,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62437 states. [2023-12-20 01:06:12,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62437 to 47065. [2023-12-20 01:06:12,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47065 states, 47064 states have (on average 1.4551674315825258) internal successors, (68486), 47064 states have internal predecessors, (68486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:12,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47065 states to 47065 states and 68486 transitions. [2023-12-20 01:06:12,345 INFO L78 Accepts]: Start accepts. Automaton has 47065 states and 68486 transitions. Word has length 108 [2023-12-20 01:06:12,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:12,345 INFO L495 AbstractCegarLoop]: Abstraction has 47065 states and 68486 transitions. [2023-12-20 01:06:12,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.5625) internal successors, (313), 16 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:12,346 INFO L276 IsEmpty]: Start isEmpty. Operand 47065 states and 68486 transitions. [2023-12-20 01:06:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-20 01:06:12,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:12,348 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:06:12,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 01:06:12,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:06:12,553 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:12,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:12,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1831502975, now seen corresponding path program 1 times [2023-12-20 01:06:12,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:12,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241245570] [2023-12-20 01:06:12,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:12,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:12,679 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:06:12,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:12,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241245570] [2023-12-20 01:06:12,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241245570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:12,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:12,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 01:06:12,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846217421] [2023-12-20 01:06:12,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:12,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 01:06:12,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:12,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 01:06:12,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:06:12,681 INFO L87 Difference]: Start difference. First operand 47065 states and 68486 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:14,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:14,013 INFO L93 Difference]: Finished difference Result 85227 states and 124768 transitions. [2023-12-20 01:06:14,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 01:06:14,013 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 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 109 [2023-12-20 01:06:14,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:14,106 INFO L225 Difference]: With dead ends: 85227 [2023-12-20 01:06:14,106 INFO L226 Difference]: Without dead ends: 79757 [2023-12-20 01:06:14,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 01:06:14,128 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 1160 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:14,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 1648 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:06:14,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79757 states. [2023-12-20 01:06:15,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79757 to 52905. [2023-12-20 01:06:15,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52905 states, 52904 states have (on average 1.454615908059882) internal successors, (76955), 52904 states have internal predecessors, (76955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52905 states to 52905 states and 76955 transitions. [2023-12-20 01:06:15,452 INFO L78 Accepts]: Start accepts. Automaton has 52905 states and 76955 transitions. Word has length 109 [2023-12-20 01:06:15,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:15,452 INFO L495 AbstractCegarLoop]: Abstraction has 52905 states and 76955 transitions. [2023-12-20 01:06:15,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:15,452 INFO L276 IsEmpty]: Start isEmpty. Operand 52905 states and 76955 transitions. [2023-12-20 01:06:15,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-20 01:06:15,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:15,455 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:06:15,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 01:06:15,455 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:15,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:15,456 INFO L85 PathProgramCache]: Analyzing trace with hash 707443653, now seen corresponding path program 1 times [2023-12-20 01:06:15,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:15,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278462914] [2023-12-20 01:06:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:15,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:15,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278462914] [2023-12-20 01:06:15,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278462914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:15,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:15,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:06:15,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042154393] [2023-12-20 01:06:15,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:15,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:06:15,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:15,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:06:15,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:15,525 INFO L87 Difference]: Start difference. First operand 52905 states and 76955 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) [2023-12-20 01:06:16,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:16,242 INFO L93 Difference]: Finished difference Result 75503 states and 109533 transitions. [2023-12-20 01:06:16,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:06:16,242 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 [2023-12-20 01:06:16,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:16,262 INFO L225 Difference]: With dead ends: 75503 [2023-12-20 01:06:16,262 INFO L226 Difference]: Without dead ends: 22645 [2023-12-20 01:06:16,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:16,291 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 53 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:16,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 306 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:16,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22645 states. [2023-12-20 01:06:16,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22645 to 22643. [2023-12-20 01:06:16,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22643 states, 22642 states have (on average 1.4268174189559226) internal successors, (32306), 22642 states have internal predecessors, (32306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22643 states to 22643 states and 32306 transitions. [2023-12-20 01:06:16,794 INFO L78 Accepts]: Start accepts. Automaton has 22643 states and 32306 transitions. Word has length 110 [2023-12-20 01:06:16,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:16,794 INFO L495 AbstractCegarLoop]: Abstraction has 22643 states and 32306 transitions. [2023-12-20 01:06:16,794 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) [2023-12-20 01:06:16,794 INFO L276 IsEmpty]: Start isEmpty. Operand 22643 states and 32306 transitions. [2023-12-20 01:06:16,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 01:06:16,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:16,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:06:16,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 01:06:16,801 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:16,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:16,802 INFO L85 PathProgramCache]: Analyzing trace with hash -719896023, now seen corresponding path program 1 times [2023-12-20 01:06:16,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:16,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171081418] [2023-12-20 01:06:16,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:16,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:17,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:17,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171081418] [2023-12-20 01:06:17,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171081418] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:06:17,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841968556] [2023-12-20 01:06:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:17,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:06:17,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:06:17,954 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:06:17,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 01:06:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:18,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 01:06:18,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:06:18,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:18,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:06:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:19,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841968556] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:06:19,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:06:19,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 23 [2023-12-20 01:06:19,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832953168] [2023-12-20 01:06:19,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:06:19,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-20 01:06:19,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-20 01:06:19,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2023-12-20 01:06:19,451 INFO L87 Difference]: Start difference. First operand 22643 states and 32306 transitions. Second operand has 24 states, 24 states have (on average 12.541666666666666) internal successors, (301), 23 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:21,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:21,153 INFO L93 Difference]: Finished difference Result 92680 states and 131666 transitions. [2023-12-20 01:06:21,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 01:06:21,155 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 12.541666666666666) internal successors, (301), 23 states have internal predecessors, (301), 0 states have call successors, (0), 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 112 [2023-12-20 01:06:21,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:21,238 INFO L225 Difference]: With dead ends: 92680 [2023-12-20 01:06:21,239 INFO L226 Difference]: Without dead ends: 74181 [2023-12-20 01:06:21,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=346, Invalid=1294, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 01:06:21,259 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 2987 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2987 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:21,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2987 Valid, 1459 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 01:06:21,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74181 states. [2023-12-20 01:06:22,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74181 to 52239. [2023-12-20 01:06:22,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52239 states, 52238 states have (on average 1.423542248937555) internal successors, (74363), 52238 states have internal predecessors, (74363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:22,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52239 states to 52239 states and 74363 transitions. [2023-12-20 01:06:22,709 INFO L78 Accepts]: Start accepts. Automaton has 52239 states and 74363 transitions. Word has length 112 [2023-12-20 01:06:22,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:22,710 INFO L495 AbstractCegarLoop]: Abstraction has 52239 states and 74363 transitions. [2023-12-20 01:06:22,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.541666666666666) internal successors, (301), 23 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:22,710 INFO L276 IsEmpty]: Start isEmpty. Operand 52239 states and 74363 transitions. [2023-12-20 01:06:22,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 01:06:22,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:22,712 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:06:22,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 01:06:22,917 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,SelfDestructingSolverStorable21 [2023-12-20 01:06:22,917 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:22,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:22,918 INFO L85 PathProgramCache]: Analyzing trace with hash 191307976, now seen corresponding path program 1 times [2023-12-20 01:06:22,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:22,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331124415] [2023-12-20 01:06:22,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:22,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:22,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:22,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331124415] [2023-12-20 01:06:22,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331124415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:22,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:22,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:06:22,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087787994] [2023-12-20 01:06:22,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:22,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:06:22,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:22,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:06:22,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:22,992 INFO L87 Difference]: Start difference. First operand 52239 states and 74363 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:23,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:23,684 INFO L93 Difference]: Finished difference Result 77458 states and 110119 transitions. [2023-12-20 01:06:23,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:06:23,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2023-12-20 01:06:23,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:23,715 INFO L225 Difference]: With dead ends: 77458 [2023-12-20 01:06:23,715 INFO L226 Difference]: Without dead ends: 30311 [2023-12-20 01:06:23,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:23,725 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 47 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:23,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 278 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:23,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30311 states. [2023-12-20 01:06:24,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30311 to 29829. [2023-12-20 01:06:24,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29829 states, 29828 states have (on average 1.4014684189352287) internal successors, (41803), 29828 states have internal predecessors, (41803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29829 states to 29829 states and 41803 transitions. [2023-12-20 01:06:24,359 INFO L78 Accepts]: Start accepts. Automaton has 29829 states and 41803 transitions. Word has length 112 [2023-12-20 01:06:24,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:24,359 INFO L495 AbstractCegarLoop]: Abstraction has 29829 states and 41803 transitions. [2023-12-20 01:06:24,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:24,359 INFO L276 IsEmpty]: Start isEmpty. Operand 29829 states and 41803 transitions. [2023-12-20 01:06:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 01:06:24,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:24,361 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:06:24,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 01:06:24,361 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:24,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:24,361 INFO L85 PathProgramCache]: Analyzing trace with hash -389415643, now seen corresponding path program 1 times [2023-12-20 01:06:24,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:24,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114120874] [2023-12-20 01:06:24,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:24,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:25,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:25,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114120874] [2023-12-20 01:06:25,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114120874] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:06:25,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388581897] [2023-12-20 01:06:25,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:25,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:06:25,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:06:25,097 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:06:25,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 01:06:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:25,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:06:25,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:06:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:25,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:06:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:26,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388581897] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:06:26,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:06:26,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-12-20 01:06:26,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022647084] [2023-12-20 01:06:26,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:06:26,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 01:06:26,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:26,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 01:06:26,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2023-12-20 01:06:26,779 INFO L87 Difference]: Start difference. First operand 29829 states and 41803 transitions. Second operand has 32 states, 32 states have (on average 9.53125) internal successors, (305), 31 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:32,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:32,759 INFO L93 Difference]: Finished difference Result 178304 states and 248097 transitions. [2023-12-20 01:06:32,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-20 01:06:32,759 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.53125) internal successors, (305), 31 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2023-12-20 01:06:32,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:32,924 INFO L225 Difference]: With dead ends: 178304 [2023-12-20 01:06:32,924 INFO L226 Difference]: Without dead ends: 148922 [2023-12-20 01:06:32,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3449 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1549, Invalid=9371, Unknown=0, NotChecked=0, Total=10920 [2023-12-20 01:06:32,946 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 5473 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 2587 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5473 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:32,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5473 Valid, 3081 Invalid, 2687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2587 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 01:06:33,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148922 states. [2023-12-20 01:06:35,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148922 to 76704. [2023-12-20 01:06:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76704 states, 76703 states have (on average 1.384313520983534) internal successors, (106181), 76703 states have internal predecessors, (106181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76704 states to 76704 states and 106181 transitions. [2023-12-20 01:06:35,272 INFO L78 Accepts]: Start accepts. Automaton has 76704 states and 106181 transitions. Word has length 112 [2023-12-20 01:06:35,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:35,273 INFO L495 AbstractCegarLoop]: Abstraction has 76704 states and 106181 transitions. [2023-12-20 01:06:35,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.53125) internal successors, (305), 31 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:35,273 INFO L276 IsEmpty]: Start isEmpty. Operand 76704 states and 106181 transitions. [2023-12-20 01:06:35,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 01:06:35,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:35,276 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:06:35,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 01:06:35,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:06:35,482 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:35,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:35,483 INFO L85 PathProgramCache]: Analyzing trace with hash 515275336, now seen corresponding path program 1 times [2023-12-20 01:06:35,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:35,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907168868] [2023-12-20 01:06:35,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:35,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:36,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:36,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907168868] [2023-12-20 01:06:36,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907168868] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:06:36,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312795972] [2023-12-20 01:06:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:36,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:06:36,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:06:36,274 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) [2023-12-20 01:06:36,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 01:06:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:36,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 01:06:36,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:06:36,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:36,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:06:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:37,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312795972] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:06:37,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:06:37,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 25 [2023-12-20 01:06:37,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213679725] [2023-12-20 01:06:37,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:06:37,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 01:06:37,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:37,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 01:06:37,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2023-12-20 01:06:37,491 INFO L87 Difference]: Start difference. First operand 76704 states and 106181 transitions. Second operand has 26 states, 26 states have (on average 11.23076923076923) internal successors, (292), 25 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:51,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:51,577 INFO L93 Difference]: Finished difference Result 852183 states and 1163148 transitions. [2023-12-20 01:06:51,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-20 01:06:51,577 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.23076923076923) internal successors, (292), 25 states have internal predecessors, (292), 0 states have call successors, (0), 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 112 [2023-12-20 01:06:51,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:52,844 INFO L225 Difference]: With dead ends: 852183 [2023-12-20 01:06:52,844 INFO L226 Difference]: Without dead ends: 777824 [2023-12-20 01:06:53,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2753 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1623, Invalid=7883, Unknown=0, NotChecked=0, Total=9506 [2023-12-20 01:06:53,002 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 7510 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7510 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:53,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7510 Valid, 2109 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 01:06:53,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777824 states. [2023-12-20 01:07:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777824 to 493455. [2023-12-20 01:07:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493455 states, 493454 states have (on average 1.3656652899763706) internal successors, (673893), 493454 states have internal predecessors, (673893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:09,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493455 states to 493455 states and 673893 transitions. [2023-12-20 01:07:09,582 INFO L78 Accepts]: Start accepts. Automaton has 493455 states and 673893 transitions. Word has length 112 [2023-12-20 01:07:09,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:07:09,582 INFO L495 AbstractCegarLoop]: Abstraction has 493455 states and 673893 transitions. [2023-12-20 01:07:09,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.23076923076923) internal successors, (292), 25 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:07:09,583 INFO L276 IsEmpty]: Start isEmpty. Operand 493455 states and 673893 transitions. [2023-12-20 01:07:09,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-20 01:07:09,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:07:09,593 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:07:09,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 01:07:09,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:07:09,796 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:07:09,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:07:09,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1099105093, now seen corresponding path program 1 times [2023-12-20 01:07:09,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:07:09,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994747723] [2023-12-20 01:07:09,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:07:09,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:07:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:07:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:07:09,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:07:09,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994747723] [2023-12-20 01:07:09,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994747723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:07:09,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:07:09,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:07:09,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822389503] [2023-12-20 01:07:09,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:07:09,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:07:09,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:07:09,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:07:09,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:07:09,846 INFO L87 Difference]: Start difference. First operand 493455 states and 673893 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)