/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.5.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:05:07,310 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:05:07,374 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 01:05:07,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:05:07,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:05:07,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:05:07,396 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:05:07,396 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:05:07,396 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:05:07,399 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:05:07,399 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:05:07,400 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:05:07,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:05:07,401 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:05:07,401 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:05:07,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:05:07,401 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:05:07,402 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:05:07,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:05:07,402 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:05:07,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:05:07,402 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:05:07,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:05:07,403 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:05:07,403 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:05:07,403 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:05:07,403 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:05:07,403 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:05:07,403 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:05:07,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:05:07,404 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:05:07,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:05:07,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:05:07,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:05:07,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:05:07,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:05:07,405 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:05:07,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:05:07,405 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:05:07,405 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:05:07,405 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:05:07,406 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:05:07,406 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:05:07,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:05:07,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:05:07,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:05:07,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:05:07,622 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:05:07,622 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:05:07,623 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c [2023-12-20 01:05:08,596 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:05:08,797 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:05:08,797 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c [2023-12-20 01:05:08,805 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c718b4dbb/19ace7d34506446b882928905a6ff8c9/FLAG959814752 [2023-12-20 01:05:08,815 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c718b4dbb/19ace7d34506446b882928905a6ff8c9 [2023-12-20 01:05:08,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:05:08,819 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:05:08,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:05:08,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:05:08,823 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:05:08,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:05:08" (1/1) ... [2023-12-20 01:05:08,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ef0974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:08, skipping insertion in model container [2023-12-20 01:05:08,825 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:05:08" (1/1) ... [2023-12-20 01:05:08,857 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:05:09,001 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.5.ufo.UNBOUNDED.pals.c[12779,12792] [2023-12-20 01:05:09,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:05:09,013 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:05:09,053 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.5.ufo.UNBOUNDED.pals.c[12779,12792] [2023-12-20 01:05:09,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:05:09,066 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:05:09,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:09 WrapperNode [2023-12-20 01:05:09,066 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:05:09,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:05:09,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:05:09,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:05:09,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:09" (1/1) ... [2023-12-20 01:05:09,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:09" (1/1) ... [2023-12-20 01:05:09,111 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 373 [2023-12-20 01:05:09,112 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:05:09,112 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:05:09,112 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:05:09,112 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:05:09,142 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:09" (1/1) ... [2023-12-20 01:05:09,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:09" (1/1) ... [2023-12-20 01:05:09,145 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:09" (1/1) ... [2023-12-20 01:05:09,160 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 01:05:09,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:09" (1/1) ... [2023-12-20 01:05:09,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:09" (1/1) ... [2023-12-20 01:05:09,165 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:09" (1/1) ... [2023-12-20 01:05:09,168 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:09" (1/1) ... [2023-12-20 01:05:09,170 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:09" (1/1) ... [2023-12-20 01:05:09,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:09" (1/1) ... [2023-12-20 01:05:09,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:05:09,175 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:05:09,175 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:05:09,175 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:05:09,175 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:09" (1/1) ... [2023-12-20 01:05:09,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:05:09,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:05:09,208 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 01:05:09,233 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 01:05:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:05:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:05:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:05:09,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:05:09,344 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:05:09,346 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:05:09,734 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:05:09,769 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:05:09,769 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:05:09,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:05:09 BoogieIcfgContainer [2023-12-20 01:05:09,769 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:05:09,771 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:05:09,771 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:05:09,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:05:09,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:05:08" (1/3) ... [2023-12-20 01:05:09,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1611ae77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:05:09, skipping insertion in model container [2023-12-20 01:05:09,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:05:09" (2/3) ... [2023-12-20 01:05:09,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1611ae77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:05:09, skipping insertion in model container [2023-12-20 01:05:09,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:05:09" (3/3) ... [2023-12-20 01:05:09,776 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c [2023-12-20 01:05:09,788 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:05:09,788 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:05:09,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:05:09,823 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;@467fd52a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:05:09,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:05:09,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 97 states have (on average 1.7835051546391754) internal successors, (173), 98 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 01:05:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-20 01:05:09,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:09,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:09,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:09,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:09,836 INFO L85 PathProgramCache]: Analyzing trace with hash -949556914, now seen corresponding path program 1 times [2023-12-20 01:05:09,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:09,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924190479] [2023-12-20 01:05:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:09,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:09,985 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 01:05:09,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:09,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924190479] [2023-12-20 01:05:09,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924190479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:09,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:09,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 01:05:09,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747872720] [2023-12-20 01:05:09,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:09,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 01:05:09,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:10,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 01:05:10,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:05:10,021 INFO L87 Difference]: Start difference. First operand has 99 states, 97 states have (on average 1.7835051546391754) internal successors, (173), 98 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:10,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:10,059 INFO L93 Difference]: Finished difference Result 161 states and 277 transitions. [2023-12-20 01:05:10,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 01:05:10,061 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-20 01:05:10,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:10,067 INFO L225 Difference]: With dead ends: 161 [2023-12-20 01:05:10,067 INFO L226 Difference]: Without dead ends: 97 [2023-12-20 01:05:10,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:05:10,071 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:10,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:10,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-20 01:05:10,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-12-20 01:05:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.75) internal successors, (168), 96 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 01:05:10,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 168 transitions. [2023-12-20 01:05:10,116 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 168 transitions. Word has length 30 [2023-12-20 01:05:10,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:10,116 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 168 transitions. [2023-12-20 01:05:10,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:10,117 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 168 transitions. [2023-12-20 01:05:10,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-20 01:05:10,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:10,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:10,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:05:10,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:10,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash 973671120, now seen corresponding path program 1 times [2023-12-20 01:05:10,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152630483] [2023-12-20 01:05:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:10,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:10,404 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 01:05:10,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:10,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152630483] [2023-12-20 01:05:10,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152630483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:10,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:10,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:05:10,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579307068] [2023-12-20 01:05:10,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:10,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:05:10,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:10,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:05:10,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:05:10,407 INFO L87 Difference]: Start difference. First operand 97 states and 168 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:10,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:10,462 INFO L93 Difference]: Finished difference Result 161 states and 271 transitions. [2023-12-20 01:05:10,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:05:10,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-20 01:05:10,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:10,464 INFO L225 Difference]: With dead ends: 161 [2023-12-20 01:05:10,464 INFO L226 Difference]: Without dead ends: 97 [2023-12-20 01:05:10,464 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 01:05:10,465 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:10,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 460 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:10,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-20 01:05:10,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-12-20 01:05:10,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4166666666666667) internal successors, (136), 96 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 01:05:10,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2023-12-20 01:05:10,470 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 30 [2023-12-20 01:05:10,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:10,470 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2023-12-20 01:05:10,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:10,470 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2023-12-20 01:05:10,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 01:05:10,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:10,472 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] [2023-12-20 01:05:10,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:05:10,472 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:10,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:10,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1207847871, now seen corresponding path program 1 times [2023-12-20 01:05:10,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:10,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614800722] [2023-12-20 01:05:10,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:10,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:10,544 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 01:05:10,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:10,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614800722] [2023-12-20 01:05:10,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614800722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:10,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:10,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:10,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503862382] [2023-12-20 01:05:10,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:10,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:10,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:10,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:10,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:10,550 INFO L87 Difference]: Start difference. First operand 97 states and 136 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 01:05:10,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:10,574 INFO L93 Difference]: Finished difference Result 211 states and 322 transitions. [2023-12-20 01:05:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:10,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-12-20 01:05:10,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:10,575 INFO L225 Difference]: With dead ends: 211 [2023-12-20 01:05:10,575 INFO L226 Difference]: Without dead ends: 150 [2023-12-20 01:05:10,576 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 01:05:10,577 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 76 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 268 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 01:05:10,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 268 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:10,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-20 01:05:10,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2023-12-20 01:05:10,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.4965986394557824) internal successors, (220), 147 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 01:05:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 220 transitions. [2023-12-20 01:05:10,585 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 220 transitions. Word has length 61 [2023-12-20 01:05:10,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:10,585 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 220 transitions. [2023-12-20 01:05:10,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 01:05:10,585 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 220 transitions. [2023-12-20 01:05:10,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 01:05:10,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:10,586 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] [2023-12-20 01:05:10,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:05:10,587 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:10,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:10,587 INFO L85 PathProgramCache]: Analyzing trace with hash 2119051870, now seen corresponding path program 1 times [2023-12-20 01:05:10,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:10,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761387902] [2023-12-20 01:05:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:10,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:10,705 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 01:05:10,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:10,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761387902] [2023-12-20 01:05:10,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761387902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:10,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:10,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:05:10,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850128523] [2023-12-20 01:05:10,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:10,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:05:10,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:10,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:05:10,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:05:10,708 INFO L87 Difference]: Start difference. First operand 148 states and 220 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 01:05:10,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:10,833 INFO L93 Difference]: Finished difference Result 820 states and 1324 transitions. [2023-12-20 01:05:10,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:05:10,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-12-20 01:05:10,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:10,837 INFO L225 Difference]: With dead ends: 820 [2023-12-20 01:05:10,837 INFO L226 Difference]: Without dead ends: 708 [2023-12-20 01:05:10,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:05:10,838 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 1243 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:10,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 860 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:05:10,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2023-12-20 01:05:10,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 258. [2023-12-20 01:05:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.5525291828793775) internal successors, (399), 257 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 01:05:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 399 transitions. [2023-12-20 01:05:10,855 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 399 transitions. Word has length 61 [2023-12-20 01:05:10,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:10,855 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 399 transitions. [2023-12-20 01:05:10,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 01:05:10,855 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 399 transitions. [2023-12-20 01:05:10,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 01:05:10,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:10,856 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] [2023-12-20 01:05:10,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:05:10,857 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:10,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:10,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1253038943, now seen corresponding path program 1 times [2023-12-20 01:05:10,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:10,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951930173] [2023-12-20 01:05:10,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:10,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:11,086 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 01:05:11,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:11,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951930173] [2023-12-20 01:05:11,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951930173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:11,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:11,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:05:11,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109834725] [2023-12-20 01:05:11,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:11,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:05:11,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:11,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:05:11,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:05:11,090 INFO L87 Difference]: Start difference. First operand 258 states and 399 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 01:05:11,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:11,112 INFO L93 Difference]: Finished difference Result 272 states and 416 transitions. [2023-12-20 01:05:11,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:05:11,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-20 01:05:11,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:11,115 INFO L225 Difference]: With dead ends: 272 [2023-12-20 01:05:11,115 INFO L226 Difference]: Without dead ends: 270 [2023-12-20 01:05:11,115 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 01:05:11,121 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 1 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 389 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 01:05:11,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 389 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:11,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-20 01:05:11,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 266. [2023-12-20 01:05:11,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.5358490566037737) internal successors, (407), 265 states have internal predecessors, (407), 0 states have call successors, (0), 0 states 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 01:05:11,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 407 transitions. [2023-12-20 01:05:11,139 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 407 transitions. Word has length 62 [2023-12-20 01:05:11,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:11,139 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 407 transitions. [2023-12-20 01:05:11,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 01:05:11,139 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 407 transitions. [2023-12-20 01:05:11,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 01:05:11,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:11,140 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] [2023-12-20 01:05:11,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:05:11,141 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:11,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:11,141 INFO L85 PathProgramCache]: Analyzing trace with hash 190503334, now seen corresponding path program 1 times [2023-12-20 01:05:11,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:11,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380861771] [2023-12-20 01:05:11,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:11,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:11,227 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 01:05:11,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:11,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380861771] [2023-12-20 01:05:11,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380861771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:11,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:11,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:11,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270553717] [2023-12-20 01:05:11,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:11,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:11,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:11,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:11,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:11,229 INFO L87 Difference]: Start difference. First operand 266 states and 407 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 01:05:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:11,251 INFO L93 Difference]: Finished difference Result 698 states and 1101 transitions. [2023-12-20 01:05:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:11,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-20 01:05:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:11,254 INFO L225 Difference]: With dead ends: 698 [2023-12-20 01:05:11,254 INFO L226 Difference]: Without dead ends: 468 [2023-12-20 01:05:11,257 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 01:05:11,259 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 64 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 224 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 01:05:11,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 224 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:11,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-12-20 01:05:11,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 462. [2023-12-20 01:05:11,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.5553145336225596) internal successors, (717), 461 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 01:05:11,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 717 transitions. [2023-12-20 01:05:11,277 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 717 transitions. Word has length 63 [2023-12-20 01:05:11,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:11,278 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 717 transitions. [2023-12-20 01:05:11,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 01:05:11,279 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 717 transitions. [2023-12-20 01:05:11,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 01:05:11,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:11,282 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] [2023-12-20 01:05:11,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:05:11,283 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:11,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:11,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1576583334, now seen corresponding path program 1 times [2023-12-20 01:05:11,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:11,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933547535] [2023-12-20 01:05:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:11,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:11,332 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 01:05:11,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:11,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933547535] [2023-12-20 01:05:11,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933547535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:11,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:11,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:11,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035453955] [2023-12-20 01:05:11,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:11,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:11,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:11,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:11,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:11,335 INFO L87 Difference]: Start difference. First operand 462 states and 717 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 01:05:11,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:11,360 INFO L93 Difference]: Finished difference Result 1250 states and 1967 transitions. [2023-12-20 01:05:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:11,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-20 01:05:11,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:11,364 INFO L225 Difference]: With dead ends: 1250 [2023-12-20 01:05:11,364 INFO L226 Difference]: Without dead ends: 824 [2023-12-20 01:05:11,365 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 01:05:11,366 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 72 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 266 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 01:05:11,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 266 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:11,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2023-12-20 01:05:11,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 822. [2023-12-20 01:05:11,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 1.5554202192448234) internal successors, (1277), 821 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states 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 01:05:11,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1277 transitions. [2023-12-20 01:05:11,389 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1277 transitions. Word has length 64 [2023-12-20 01:05:11,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:11,390 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 1277 transitions. [2023-12-20 01:05:11,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 01:05:11,390 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1277 transitions. [2023-12-20 01:05:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 01:05:11,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:11,392 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] [2023-12-20 01:05:11,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:05:11,392 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:11,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:11,392 INFO L85 PathProgramCache]: Analyzing trace with hash 920527590, now seen corresponding path program 1 times [2023-12-20 01:05:11,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:11,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234513174] [2023-12-20 01:05:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:11,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:11,446 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 01:05:11,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:11,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234513174] [2023-12-20 01:05:11,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234513174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:11,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:11,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:11,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195042914] [2023-12-20 01:05:11,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:11,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:11,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:11,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:11,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:11,448 INFO L87 Difference]: Start difference. First operand 822 states and 1277 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 01:05:11,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:11,478 INFO L93 Difference]: Finished difference Result 2266 states and 3535 transitions. [2023-12-20 01:05:11,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:11,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-20 01:05:11,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:11,482 INFO L225 Difference]: With dead ends: 2266 [2023-12-20 01:05:11,482 INFO L226 Difference]: Without dead ends: 1480 [2023-12-20 01:05:11,484 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 01:05:11,485 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 80 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 282 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 01:05:11,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 282 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:11,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2023-12-20 01:05:11,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1478. [2023-12-20 01:05:11,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 1.5416384563303995) internal successors, (2277), 1477 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states 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 01:05:11,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2277 transitions. [2023-12-20 01:05:11,514 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2277 transitions. Word has length 64 [2023-12-20 01:05:11,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:11,515 INFO L495 AbstractCegarLoop]: Abstraction has 1478 states and 2277 transitions. [2023-12-20 01:05:11,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 01:05:11,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2277 transitions. [2023-12-20 01:05:11,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 01:05:11,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:11,515 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] [2023-12-20 01:05:11,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:05:11,516 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:11,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:11,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2002355194, now seen corresponding path program 1 times [2023-12-20 01:05:11,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:11,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315379803] [2023-12-20 01:05:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:11,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:11,574 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 01:05:11,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:11,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315379803] [2023-12-20 01:05:11,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315379803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:11,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:11,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:11,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102564535] [2023-12-20 01:05:11,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:11,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:11,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:11,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:11,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:11,576 INFO L87 Difference]: Start difference. First operand 1478 states and 2277 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 01:05:11,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:11,639 INFO L93 Difference]: Finished difference Result 4106 states and 6311 transitions. [2023-12-20 01:05:11,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:11,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-20 01:05:11,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:11,647 INFO L225 Difference]: With dead ends: 4106 [2023-12-20 01:05:11,647 INFO L226 Difference]: Without dead ends: 2664 [2023-12-20 01:05:11,648 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 01:05:11,648 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 84 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 295 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 01:05:11,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 295 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:11,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2023-12-20 01:05:11,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2662. [2023-12-20 01:05:11,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2661 states have (on average 1.517098835024427) internal successors, (4037), 2661 states have internal predecessors, (4037), 0 states have call successors, (0), 0 states 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 01:05:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 4037 transitions. [2023-12-20 01:05:11,699 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 4037 transitions. Word has length 64 [2023-12-20 01:05:11,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:11,700 INFO L495 AbstractCegarLoop]: Abstraction has 2662 states and 4037 transitions. [2023-12-20 01:05:11,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 01:05:11,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 4037 transitions. [2023-12-20 01:05:11,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:05:11,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:11,700 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] [2023-12-20 01:05:11,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:05:11,701 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:11,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:11,701 INFO L85 PathProgramCache]: Analyzing trace with hash 488639244, now seen corresponding path program 1 times [2023-12-20 01:05:11,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:11,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394145325] [2023-12-20 01:05:11,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:11,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:11,739 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 01:05:11,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:11,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394145325] [2023-12-20 01:05:11,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394145325] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:11,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:11,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:11,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401985875] [2023-12-20 01:05:11,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:11,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:11,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:11,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:11,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:11,741 INFO L87 Difference]: Start difference. First operand 2662 states and 4037 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 01:05:11,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:11,797 INFO L93 Difference]: Finished difference Result 5229 states and 7979 transitions. [2023-12-20 01:05:11,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:11,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-20 01:05:11,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:11,808 INFO L225 Difference]: With dead ends: 5229 [2023-12-20 01:05:11,808 INFO L226 Difference]: Without dead ends: 3786 [2023-12-20 01:05:11,814 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 01:05:11,815 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 85 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 304 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 01:05:11,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 304 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:11,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2023-12-20 01:05:11,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3784. [2023-12-20 01:05:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 3783 states have (on average 1.507533703409992) internal successors, (5703), 3783 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states 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 01:05:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5703 transitions. [2023-12-20 01:05:11,907 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5703 transitions. Word has length 65 [2023-12-20 01:05:11,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:11,907 INFO L495 AbstractCegarLoop]: Abstraction has 3784 states and 5703 transitions. [2023-12-20 01:05:11,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 01:05:11,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5703 transitions. [2023-12-20 01:05:11,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 01:05:11,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:11,910 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:05:11,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:05:11,911 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:11,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:11,911 INFO L85 PathProgramCache]: Analyzing trace with hash 3829652, now seen corresponding path program 1 times [2023-12-20 01:05:11,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:11,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043708280] [2023-12-20 01:05:11,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:11,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 01:05:12,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:12,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043708280] [2023-12-20 01:05:12,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043708280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:12,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:12,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:05:12,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699962614] [2023-12-20 01:05:12,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:12,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:05:12,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:12,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:05:12,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:05:12,060 INFO L87 Difference]: Start difference. First operand 3784 states and 5703 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 01:05:12,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:12,286 INFO L93 Difference]: Finished difference Result 12596 states and 19229 transitions. [2023-12-20 01:05:12,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:05:12,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 90 [2023-12-20 01:05:12,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:12,315 INFO L225 Difference]: With dead ends: 12596 [2023-12-20 01:05:12,315 INFO L226 Difference]: Without dead ends: 10706 [2023-12-20 01:05:12,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:05:12,320 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 992 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:12,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 871 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:05:12,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10706 states. [2023-12-20 01:05:12,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10706 to 5640. [2023-12-20 01:05:12,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5640 states, 5639 states have (on average 1.5078914701188153) internal successors, (8503), 5639 states have internal predecessors, (8503), 0 states have call successors, (0), 0 states 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 01:05:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5640 states to 5640 states and 8503 transitions. [2023-12-20 01:05:12,549 INFO L78 Accepts]: Start accepts. Automaton has 5640 states and 8503 transitions. Word has length 90 [2023-12-20 01:05:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:12,549 INFO L495 AbstractCegarLoop]: Abstraction has 5640 states and 8503 transitions. [2023-12-20 01:05:12,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 01:05:12,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5640 states and 8503 transitions. [2023-12-20 01:05:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 01:05:12,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:12,551 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:05:12,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 01:05:12,551 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:12,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:12,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1007465101, now seen corresponding path program 1 times [2023-12-20 01:05:12,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:12,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391684710] [2023-12-20 01:05:12,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:12,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 01:05:12,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:12,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391684710] [2023-12-20 01:05:12,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391684710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:12,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:12,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:05:12,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703898055] [2023-12-20 01:05:12,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:12,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:05:12,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:12,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:05:12,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:05:12,654 INFO L87 Difference]: Start difference. First operand 5640 states and 8503 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 01:05:12,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:12,893 INFO L93 Difference]: Finished difference Result 14452 states and 22029 transitions. [2023-12-20 01:05:12,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:05:12,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 90 [2023-12-20 01:05:12,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:12,931 INFO L225 Difference]: With dead ends: 14452 [2023-12-20 01:05:12,932 INFO L226 Difference]: Without dead ends: 12562 [2023-12-20 01:05:12,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:05:12,938 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 942 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:12,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 882 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:12,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12562 states. [2023-12-20 01:05:13,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12562 to 7496. [2023-12-20 01:05:13,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 7495 states have (on average 1.5080720480320213) internal successors, (11303), 7495 states have internal predecessors, (11303), 0 states have call successors, (0), 0 states 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 01:05:13,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 11303 transitions. [2023-12-20 01:05:13,174 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 11303 transitions. Word has length 90 [2023-12-20 01:05:13,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:13,174 INFO L495 AbstractCegarLoop]: Abstraction has 7496 states and 11303 transitions. [2023-12-20 01:05:13,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 01:05:13,174 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 11303 transitions. [2023-12-20 01:05:13,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 01:05:13,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:13,177 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:05:13,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:05:13,177 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:13,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:13,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1089701355, now seen corresponding path program 1 times [2023-12-20 01:05:13,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:13,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693061113] [2023-12-20 01:05:13,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:13,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:13,297 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 01:05:13,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:13,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693061113] [2023-12-20 01:05:13,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693061113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:13,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:13,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:05:13,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893613525] [2023-12-20 01:05:13,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:13,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:05:13,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:13,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:05:13,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:05:13,299 INFO L87 Difference]: Start difference. First operand 7496 states and 11303 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 01:05:13,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:13,598 INFO L93 Difference]: Finished difference Result 16308 states and 24829 transitions. [2023-12-20 01:05:13,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:05:13,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 90 [2023-12-20 01:05:13,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:13,622 INFO L225 Difference]: With dead ends: 16308 [2023-12-20 01:05:13,622 INFO L226 Difference]: Without dead ends: 14418 [2023-12-20 01:05:13,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:05:13,629 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 833 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:13,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1019 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:05:13,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14418 states. [2023-12-20 01:05:13,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14418 to 9352. [2023-12-20 01:05:13,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9352 states, 9351 states have (on average 1.5081809432146294) internal successors, (14103), 9351 states have internal predecessors, (14103), 0 states have call successors, (0), 0 states 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 01:05:13,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9352 states to 9352 states and 14103 transitions. [2023-12-20 01:05:13,917 INFO L78 Accepts]: Start accepts. Automaton has 9352 states and 14103 transitions. Word has length 90 [2023-12-20 01:05:13,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:13,917 INFO L495 AbstractCegarLoop]: Abstraction has 9352 states and 14103 transitions. [2023-12-20 01:05:13,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 01:05:13,918 INFO L276 IsEmpty]: Start isEmpty. Operand 9352 states and 14103 transitions. [2023-12-20 01:05:13,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 01:05:13,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:13,921 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:05:13,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:05:13,921 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:13,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:13,922 INFO L85 PathProgramCache]: Analyzing trace with hash 282383157, now seen corresponding path program 1 times [2023-12-20 01:05:13,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:13,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015293895] [2023-12-20 01:05:13,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:13,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 01:05:14,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:14,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015293895] [2023-12-20 01:05:14,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015293895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:14,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:14,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:05:14,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003999195] [2023-12-20 01:05:14,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:14,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:05:14,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:14,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:05:14,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:05:14,036 INFO L87 Difference]: Start difference. First operand 9352 states and 14103 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 01:05:14,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:14,416 INFO L93 Difference]: Finished difference Result 18164 states and 27629 transitions. [2023-12-20 01:05:14,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:05:14,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 90 [2023-12-20 01:05:14,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:14,442 INFO L225 Difference]: With dead ends: 18164 [2023-12-20 01:05:14,442 INFO L226 Difference]: Without dead ends: 16274 [2023-12-20 01:05:14,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:05:14,447 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 877 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:14,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 968 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16274 states. [2023-12-20 01:05:14,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16274 to 11208. [2023-12-20 01:05:14,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11208 states, 11207 states have (on average 1.5082537699652003) internal successors, (16903), 11207 states have internal predecessors, (16903), 0 states have call successors, (0), 0 states 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 01:05:14,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11208 states to 11208 states and 16903 transitions. [2023-12-20 01:05:14,740 INFO L78 Accepts]: Start accepts. Automaton has 11208 states and 16903 transitions. Word has length 90 [2023-12-20 01:05:14,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:14,740 INFO L495 AbstractCegarLoop]: Abstraction has 11208 states and 16903 transitions. [2023-12-20 01:05:14,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 01:05:14,740 INFO L276 IsEmpty]: Start isEmpty. Operand 11208 states and 16903 transitions. [2023-12-20 01:05:14,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 01:05:14,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:14,744 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] [2023-12-20 01:05:14,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:05:14,744 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:14,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:14,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1284889631, now seen corresponding path program 1 times [2023-12-20 01:05:14,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:14,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244943465] [2023-12-20 01:05:14,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:14,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:14,819 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 01:05:14,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:14,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244943465] [2023-12-20 01:05:14,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244943465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:14,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:14,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:14,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666897774] [2023-12-20 01:05:14,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:14,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:14,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:14,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:14,821 INFO L87 Difference]: Start difference. First operand 11208 states and 16903 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 01:05:15,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:15,021 INFO L93 Difference]: Finished difference Result 22380 states and 33769 transitions. [2023-12-20 01:05:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:15,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-20 01:05:15,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:15,037 INFO L225 Difference]: With dead ends: 22380 [2023-12-20 01:05:15,038 INFO L226 Difference]: Without dead ends: 11210 [2023-12-20 01:05:15,050 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 01:05:15,051 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 68 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 296 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 01:05:15,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 296 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:15,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11210 states. [2023-12-20 01:05:15,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11210 to 11208. [2023-12-20 01:05:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11208 states, 11207 states have (on average 1.4954046578031588) internal successors, (16759), 11207 states have internal predecessors, (16759), 0 states have call successors, (0), 0 states 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 01:05:15,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11208 states to 11208 states and 16759 transitions. [2023-12-20 01:05:15,364 INFO L78 Accepts]: Start accepts. Automaton has 11208 states and 16759 transitions. Word has length 91 [2023-12-20 01:05:15,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:15,364 INFO L495 AbstractCegarLoop]: Abstraction has 11208 states and 16759 transitions. [2023-12-20 01:05:15,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 01:05:15,364 INFO L276 IsEmpty]: Start isEmpty. Operand 11208 states and 16759 transitions. [2023-12-20 01:05:15,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 01:05:15,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:15,366 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:05:15,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:05:15,366 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:15,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:15,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1611106240, now seen corresponding path program 1 times [2023-12-20 01:05:15,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:15,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049586277] [2023-12-20 01:05:15,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:15,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:15,435 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 01:05:15,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:15,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049586277] [2023-12-20 01:05:15,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049586277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:15,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:15,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:15,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83314292] [2023-12-20 01:05:15,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:15,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:15,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:15,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:15,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:15,438 INFO L87 Difference]: Start difference. First operand 11208 states and 16759 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 01:05:15,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:15,535 INFO L93 Difference]: Finished difference Result 16796 states and 25121 transitions. [2023-12-20 01:05:15,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:15,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-20 01:05:15,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:15,544 INFO L225 Difference]: With dead ends: 16796 [2023-12-20 01:05:15,544 INFO L226 Difference]: Without dead ends: 5626 [2023-12-20 01:05:15,554 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 01:05:15,555 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 62 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 277 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 01:05:15,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 277 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:15,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5626 states. [2023-12-20 01:05:15,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5626 to 5624. [2023-12-20 01:05:15,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5624 states, 5623 states have (on average 1.4808820914102792) internal successors, (8327), 5623 states have internal predecessors, (8327), 0 states have call successors, (0), 0 states 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 01:05:15,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5624 states to 5624 states and 8327 transitions. [2023-12-20 01:05:15,670 INFO L78 Accepts]: Start accepts. Automaton has 5624 states and 8327 transitions. Word has length 91 [2023-12-20 01:05:15,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:15,671 INFO L495 AbstractCegarLoop]: Abstraction has 5624 states and 8327 transitions. [2023-12-20 01:05:15,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 01:05:15,671 INFO L276 IsEmpty]: Start isEmpty. Operand 5624 states and 8327 transitions. [2023-12-20 01:05:15,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 01:05:15,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:15,672 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] [2023-12-20 01:05:15,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 01:05:15,672 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:15,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:15,673 INFO L85 PathProgramCache]: Analyzing trace with hash 512249057, now seen corresponding path program 1 times [2023-12-20 01:05:15,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:15,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427713232] [2023-12-20 01:05:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:15,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:15,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:15,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427713232] [2023-12-20 01:05:15,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427713232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:15,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:15,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:15,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169965556] [2023-12-20 01:05:15,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:15,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:15,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:15,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:15,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:15,739 INFO L87 Difference]: Start difference. First operand 5624 states and 8327 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 01:05:15,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:15,820 INFO L93 Difference]: Finished difference Result 8420 states and 12473 transitions. [2023-12-20 01:05:15,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:15,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-20 01:05:15,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:15,824 INFO L225 Difference]: With dead ends: 8420 [2023-12-20 01:05:15,824 INFO L226 Difference]: Without dead ends: 2834 [2023-12-20 01:05:15,829 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 01:05:15,829 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 56 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 255 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 01:05:15,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 255 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:15,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2023-12-20 01:05:15,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 2832. [2023-12-20 01:05:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2831 states have (on average 1.464853408689509) internal successors, (4147), 2831 states have internal predecessors, (4147), 0 states have call successors, (0), 0 states 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 01:05:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 4147 transitions. [2023-12-20 01:05:15,893 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 4147 transitions. Word has length 91 [2023-12-20 01:05:15,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:15,893 INFO L495 AbstractCegarLoop]: Abstraction has 2832 states and 4147 transitions. [2023-12-20 01:05:15,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 01:05:15,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 4147 transitions. [2023-12-20 01:05:15,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 01:05:15,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:15,895 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] [2023-12-20 01:05:15,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:05:15,895 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:15,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:15,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1830595966, now seen corresponding path program 1 times [2023-12-20 01:05:15,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:15,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422736724] [2023-12-20 01:05:15,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:15,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:17,120 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:17,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:17,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422736724] [2023-12-20 01:05:17,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422736724] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:05:17,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999584925] [2023-12-20 01:05:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:17,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:05:17,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:05:17,123 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 01:05:17,157 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 01:05:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:17,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 01:05:17,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:05:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:05:17,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:05:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:05:17,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999584925] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:05:17,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:05:17,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 16 [2023-12-20 01:05:17,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523829983] [2023-12-20 01:05:17,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:05:17,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 01:05:17,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:17,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 01:05:17,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-20 01:05:17,566 INFO L87 Difference]: Start difference. First operand 2832 states and 4147 transitions. Second operand has 16 states, 16 states have (on average 16.375) internal successors, (262), 16 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 01:05:23,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:23,358 INFO L93 Difference]: Finished difference Result 25472 states and 36797 transitions. [2023-12-20 01:05:23,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-20 01:05:23,359 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.375) internal successors, (262), 16 states have internal predecessors, (262), 0 states have call successors, (0), 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 91 [2023-12-20 01:05:23,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:23,399 INFO L225 Difference]: With dead ends: 25472 [2023-12-20 01:05:23,399 INFO L226 Difference]: Without dead ends: 23550 [2023-12-20 01:05:23,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2443 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1261, Invalid=5545, Unknown=0, NotChecked=0, Total=6806 [2023-12-20 01:05:23,406 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 3480 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3480 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:23,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3480 Valid, 1862 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 01:05:23,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23550 states. [2023-12-20 01:05:23,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23550 to 17548. [2023-12-20 01:05:23,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17548 states, 17547 states have (on average 1.433236450675329) internal successors, (25149), 17547 states have internal predecessors, (25149), 0 states have call successors, (0), 0 states 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 01:05:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17548 states to 17548 states and 25149 transitions. [2023-12-20 01:05:23,833 INFO L78 Accepts]: Start accepts. Automaton has 17548 states and 25149 transitions. Word has length 91 [2023-12-20 01:05:23,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:23,833 INFO L495 AbstractCegarLoop]: Abstraction has 17548 states and 25149 transitions. [2023-12-20 01:05:23,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.375) internal successors, (262), 16 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 01:05:23,834 INFO L276 IsEmpty]: Start isEmpty. Operand 17548 states and 25149 transitions. [2023-12-20 01:05:23,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 01:05:23,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:23,835 INFO L195 NwaCegarLoop]: trace histogram [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 01:05:23,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 01:05:24,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 01:05:24,054 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:24,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:24,054 INFO L85 PathProgramCache]: Analyzing trace with hash 192233171, now seen corresponding path program 1 times [2023-12-20 01:05:24,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:24,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134228269] [2023-12-20 01:05:24,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:24,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:24,159 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:05:24,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:24,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134228269] [2023-12-20 01:05:24,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134228269] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:24,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:24,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 01:05:24,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345286478] [2023-12-20 01:05:24,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:24,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 01:05:24,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:24,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 01:05:24,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:05:24,161 INFO L87 Difference]: Start difference. First operand 17548 states and 25149 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 01:05:24,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:24,681 INFO L93 Difference]: Finished difference Result 30782 states and 44431 transitions. [2023-12-20 01:05:24,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:05:24,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 92 [2023-12-20 01:05:24,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:24,722 INFO L225 Difference]: With dead ends: 30782 [2023-12-20 01:05:24,723 INFO L226 Difference]: Without dead ends: 28438 [2023-12-20 01:05:24,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:05:24,733 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 775 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:24,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 1077 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:05:24,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28438 states. [2023-12-20 01:05:25,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28438 to 19918. [2023-12-20 01:05:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19918 states, 19917 states have (on average 1.4327961038308983) internal successors, (28537), 19917 states have internal predecessors, (28537), 0 states have call successors, (0), 0 states 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 01:05:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19918 states to 19918 states and 28537 transitions. [2023-12-20 01:05:25,320 INFO L78 Accepts]: Start accepts. Automaton has 19918 states and 28537 transitions. Word has length 92 [2023-12-20 01:05:25,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:25,321 INFO L495 AbstractCegarLoop]: Abstraction has 19918 states and 28537 transitions. [2023-12-20 01:05:25,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 01:05:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 19918 states and 28537 transitions. [2023-12-20 01:05:25,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 01:05:25,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:25,323 INFO L195 NwaCegarLoop]: trace histogram [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 01:05:25,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 01:05:25,323 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:25,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:25,323 INFO L85 PathProgramCache]: Analyzing trace with hash 813039922, now seen corresponding path program 1 times [2023-12-20 01:05:25,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:25,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474204427] [2023-12-20 01:05:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:25,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:25,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:25,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474204427] [2023-12-20 01:05:25,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474204427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:25,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:25,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:25,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829529204] [2023-12-20 01:05:25,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:25,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:25,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:25,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:25,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:25,386 INFO L87 Difference]: Start difference. First operand 19918 states and 28537 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 01:05:25,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:25,584 INFO L93 Difference]: Finished difference Result 29742 states and 42479 transitions. [2023-12-20 01:05:25,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:25,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 93 [2023-12-20 01:05:25,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:25,599 INFO L225 Difference]: With dead ends: 29742 [2023-12-20 01:05:25,599 INFO L226 Difference]: Without dead ends: 9862 [2023-12-20 01:05:25,616 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 01:05:25,617 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 40 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 248 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 01:05:25,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 248 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:25,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9862 states. [2023-12-20 01:05:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9862 to 9860. [2023-12-20 01:05:25,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9860 states, 9859 states have (on average 1.4008520133887818) internal successors, (13811), 9859 states have internal predecessors, (13811), 0 states have call successors, (0), 0 states 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 01:05:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9860 states to 9860 states and 13811 transitions. [2023-12-20 01:05:25,916 INFO L78 Accepts]: Start accepts. Automaton has 9860 states and 13811 transitions. Word has length 93 [2023-12-20 01:05:25,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:25,916 INFO L495 AbstractCegarLoop]: Abstraction has 9860 states and 13811 transitions. [2023-12-20 01:05:25,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 01:05:25,917 INFO L276 IsEmpty]: Start isEmpty. Operand 9860 states and 13811 transitions. [2023-12-20 01:05:25,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 01:05:25,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:25,918 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:05:25,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 01:05:25,918 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:25,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:25,918 INFO L85 PathProgramCache]: Analyzing trace with hash -296151914, now seen corresponding path program 1 times [2023-12-20 01:05:25,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:25,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181887985] [2023-12-20 01:05:25,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:25,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:27,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:27,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181887985] [2023-12-20 01:05:27,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181887985] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:05:27,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801418381] [2023-12-20 01:05:27,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:27,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:05:27,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:05:27,305 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 01:05:27,326 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 01:05:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:27,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:05:27,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:05:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:28,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:05:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:28,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801418381] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:05:28,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:05:28,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-12-20 01:05:28,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123753980] [2023-12-20 01:05:28,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:05:28,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 01:05:28,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:28,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 01:05:28,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2023-12-20 01:05:28,813 INFO L87 Difference]: Start difference. First operand 9860 states and 13811 transitions. Second operand has 32 states, 32 states have (on average 7.9375) internal successors, (254), 31 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:33,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:33,899 INFO L93 Difference]: Finished difference Result 46671 states and 64442 transitions. [2023-12-20 01:05:33,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-20 01:05:33,900 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.9375) internal successors, (254), 31 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 01:05:33,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:33,947 INFO L225 Difference]: With dead ends: 46671 [2023-12-20 01:05:33,947 INFO L226 Difference]: Without dead ends: 36871 [2023-12-20 01:05:33,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4053 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2106, Invalid=10326, Unknown=0, NotChecked=0, Total=12432 [2023-12-20 01:05:33,965 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 5388 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5388 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:33,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5388 Valid, 1728 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1771 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 01:05:33,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36871 states. [2023-12-20 01:05:34,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36871 to 23776. [2023-12-20 01:05:34,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23776 states, 23775 states have (on average 1.3917981072555206) internal successors, (33090), 23775 states have internal predecessors, (33090), 0 states have call successors, (0), 0 states 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 01:05:34,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23776 states to 23776 states and 33090 transitions. [2023-12-20 01:05:34,634 INFO L78 Accepts]: Start accepts. Automaton has 23776 states and 33090 transitions. Word has length 95 [2023-12-20 01:05:34,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:34,634 INFO L495 AbstractCegarLoop]: Abstraction has 23776 states and 33090 transitions. [2023-12-20 01:05:34,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.9375) internal successors, (254), 31 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:34,635 INFO L276 IsEmpty]: Start isEmpty. Operand 23776 states and 33090 transitions. [2023-12-20 01:05:34,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 01:05:34,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:34,639 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:05:34,648 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 01:05:34,846 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,SelfDestructingSolverStorable20 [2023-12-20 01:05:34,846 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:34,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:34,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1866403480, now seen corresponding path program 1 times [2023-12-20 01:05:34,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:34,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176924874] [2023-12-20 01:05:34,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:34,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:35,213 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:35,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:35,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176924874] [2023-12-20 01:05:35,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176924874] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:05:35,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915780930] [2023-12-20 01:05:35,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:35,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:05:35,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:05:35,215 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 01:05:35,220 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 01:05:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:35,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 01:05:35,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:05:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:35,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:05:36,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:36,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915780930] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:05:36,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:05:36,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-20 01:05:36,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329017031] [2023-12-20 01:05:36,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:05:36,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 01:05:36,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:36,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 01:05:36,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2023-12-20 01:05:36,506 INFO L87 Difference]: Start difference. First operand 23776 states and 33090 transitions. Second operand has 23 states, 23 states have (on average 11.695652173913043) internal successors, (269), 22 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:41,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:41,764 INFO L93 Difference]: Finished difference Result 123945 states and 171113 transitions. [2023-12-20 01:05:41,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-12-20 01:05:41,764 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.695652173913043) internal successors, (269), 22 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 01:05:41,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:41,895 INFO L225 Difference]: With dead ends: 123945 [2023-12-20 01:05:41,895 INFO L226 Difference]: Without dead ends: 101176 [2023-12-20 01:05:41,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4285 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2222, Invalid=10660, Unknown=0, NotChecked=0, Total=12882 [2023-12-20 01:05:41,928 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 6908 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6908 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:41,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6908 Valid, 1609 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 01:05:42,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101176 states. [2023-12-20 01:05:43,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101176 to 54636. [2023-12-20 01:05:43,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54636 states, 54635 states have (on average 1.3870595771941063) internal successors, (75782), 54635 states have internal predecessors, (75782), 0 states have call successors, (0), 0 states 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 01:05:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54636 states to 54636 states and 75782 transitions. [2023-12-20 01:05:43,841 INFO L78 Accepts]: Start accepts. Automaton has 54636 states and 75782 transitions. Word has length 95 [2023-12-20 01:05:43,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:43,841 INFO L495 AbstractCegarLoop]: Abstraction has 54636 states and 75782 transitions. [2023-12-20 01:05:43,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.695652173913043) internal successors, (269), 22 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 54636 states and 75782 transitions. [2023-12-20 01:05:43,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 01:05:43,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:43,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:43,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 01:05:44,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:05:44,054 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:44,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:44,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1563244245, now seen corresponding path program 1 times [2023-12-20 01:05:44,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:44,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504625149] [2023-12-20 01:05:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:44,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:44,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:44,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504625149] [2023-12-20 01:05:44,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504625149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:44,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:44,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:44,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636680244] [2023-12-20 01:05:44,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:44,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:44,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:44,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:44,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:44,119 INFO L87 Difference]: Start difference. First operand 54636 states and 75782 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 01:05:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:45,151 INFO L93 Difference]: Finished difference Result 84033 states and 116373 transitions. [2023-12-20 01:05:45,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:45,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-20 01:05:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:45,194 INFO L225 Difference]: With dead ends: 84033 [2023-12-20 01:05:45,194 INFO L226 Difference]: Without dead ends: 35436 [2023-12-20 01:05:45,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:45,224 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 37 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 223 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 01:05:45,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 223 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:45,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35436 states. [2023-12-20 01:05:46,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35436 to 35434. [2023-12-20 01:05:46,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35434 states, 35433 states have (on average 1.3649422854401265) internal successors, (48364), 35433 states have internal predecessors, (48364), 0 states have call successors, (0), 0 states 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 01:05:46,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35434 states to 35434 states and 48364 transitions. [2023-12-20 01:05:46,245 INFO L78 Accepts]: Start accepts. Automaton has 35434 states and 48364 transitions. Word has length 95 [2023-12-20 01:05:46,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:46,245 INFO L495 AbstractCegarLoop]: Abstraction has 35434 states and 48364 transitions. [2023-12-20 01:05:46,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 01:05:46,246 INFO L276 IsEmpty]: Start isEmpty. Operand 35434 states and 48364 transitions. [2023-12-20 01:05:46,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 01:05:46,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:46,248 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:05:46,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 01:05:46,249 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:46,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:46,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1498404379, now seen corresponding path program 1 times [2023-12-20 01:05:46,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:46,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677055589] [2023-12-20 01:05:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:46,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:46,279 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:46,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:46,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677055589] [2023-12-20 01:05:46,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677055589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:46,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:46,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:46,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228270229] [2023-12-20 01:05:46,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:46,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:46,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:46,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:46,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:46,280 INFO L87 Difference]: Start difference. First operand 35434 states and 48364 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 01:05:47,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:47,599 INFO L93 Difference]: Finished difference Result 90846 states and 123323 transitions. [2023-12-20 01:05:47,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:47,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2023-12-20 01:05:47,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:47,659 INFO L225 Difference]: With dead ends: 90846 [2023-12-20 01:05:47,659 INFO L226 Difference]: Without dead ends: 56657 [2023-12-20 01:05:47,675 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 01:05:47,675 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 64 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:47,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 281 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:47,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56657 states. [2023-12-20 01:05:49,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56657 to 56655. [2023-12-20 01:05:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56655 states, 56654 states have (on average 1.3386521693084337) internal successors, (75840), 56654 states have internal predecessors, (75840), 0 states have call successors, (0), 0 states 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 01:05:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56655 states to 56655 states and 75840 transitions. [2023-12-20 01:05:49,553 INFO L78 Accepts]: Start accepts. Automaton has 56655 states and 75840 transitions. Word has length 96 [2023-12-20 01:05:49,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:49,553 INFO L495 AbstractCegarLoop]: Abstraction has 56655 states and 75840 transitions. [2023-12-20 01:05:49,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 01:05:49,553 INFO L276 IsEmpty]: Start isEmpty. Operand 56655 states and 75840 transitions. [2023-12-20 01:05:49,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 01:05:49,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:49,556 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:05:49,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 01:05:49,557 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:49,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:49,557 INFO L85 PathProgramCache]: Analyzing trace with hash 911061177, now seen corresponding path program 1 times [2023-12-20 01:05:49,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:49,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877471860] [2023-12-20 01:05:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:49,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:49,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:49,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877471860] [2023-12-20 01:05:49,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877471860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:49,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:49,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:49,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748509336] [2023-12-20 01:05:49,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:49,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:49,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:49,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:49,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:49,590 INFO L87 Difference]: Start difference. First operand 56655 states and 75840 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 01:05:51,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:51,896 INFO L93 Difference]: Finished difference Result 156275 states and 208061 transitions. [2023-12-20 01:05:51,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:51,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2023-12-20 01:05:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:52,042 INFO L225 Difference]: With dead ends: 156275 [2023-12-20 01:05:52,043 INFO L226 Difference]: Without dead ends: 102502 [2023-12-20 01:05:52,091 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 01:05:52,092 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 61 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:52,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 285 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:52,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102502 states. [2023-12-20 01:05:54,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102502 to 102500. [2023-12-20 01:05:55,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102500 states, 102499 states have (on average 1.3132323242177972) internal successors, (134605), 102499 states have internal predecessors, (134605), 0 states have call successors, (0), 0 states 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 01:05:55,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102500 states to 102500 states and 134605 transitions. [2023-12-20 01:05:55,166 INFO L78 Accepts]: Start accepts. Automaton has 102500 states and 134605 transitions. Word has length 96 [2023-12-20 01:05:55,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:55,167 INFO L495 AbstractCegarLoop]: Abstraction has 102500 states and 134605 transitions. [2023-12-20 01:05:55,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 01:05:55,167 INFO L276 IsEmpty]: Start isEmpty. Operand 102500 states and 134605 transitions. [2023-12-20 01:05:55,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 01:05:55,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:55,174 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:05:55,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 01:05:55,174 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:55,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:55,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1560684039, now seen corresponding path program 1 times [2023-12-20 01:05:55,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:55,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279848661] [2023-12-20 01:05:55,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:55,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:55,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:55,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279848661] [2023-12-20 01:05:55,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279848661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:55,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:55,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:55,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497475297] [2023-12-20 01:05:55,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:55,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:55,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:55,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:55,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:55,205 INFO L87 Difference]: Start difference. First operand 102500 states and 134605 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 01:05:59,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:59,830 INFO L93 Difference]: Finished difference Result 282575 states and 369138 transitions. [2023-12-20 01:05:59,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:59,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2023-12-20 01:05:59,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:00,072 INFO L225 Difference]: With dead ends: 282575 [2023-12-20 01:06:00,072 INFO L226 Difference]: Without dead ends: 182841 [2023-12-20 01:06:00,131 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 01:06:00,132 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 67 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:00,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 264 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:00,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182841 states. [2023-12-20 01:06:05,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182841 to 182839. [2023-12-20 01:06:05,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182839 states, 182838 states have (on average 1.2906343320316345) internal successors, (235977), 182838 states have internal predecessors, (235977), 0 states have call successors, (0), 0 states 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 01:06:06,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182839 states to 182839 states and 235977 transitions. [2023-12-20 01:06:06,126 INFO L78 Accepts]: Start accepts. Automaton has 182839 states and 235977 transitions. Word has length 96 [2023-12-20 01:06:06,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:06,126 INFO L495 AbstractCegarLoop]: Abstraction has 182839 states and 235977 transitions. [2023-12-20 01:06:06,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 01:06:06,126 INFO L276 IsEmpty]: Start isEmpty. Operand 182839 states and 235977 transitions. [2023-12-20 01:06:06,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 01:06:06,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:06,136 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:06:06,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 01:06:06,136 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:06,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:06,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1123806281, now seen corresponding path program 1 times [2023-12-20 01:06:06,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:06,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085505225] [2023-12-20 01:06:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:06,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:06,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:06,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085505225] [2023-12-20 01:06:06,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085505225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:06:06,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:06:06,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:06:06,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411777915] [2023-12-20 01:06:06,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:06:06,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:06:06,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:06,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:06:06,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:06:06,164 INFO L87 Difference]: Start difference. First operand 182839 states and 235977 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 01:06:10,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:10,688 INFO L93 Difference]: Finished difference Result 267311 states and 343241 transitions. [2023-12-20 01:06:10,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:06:10,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2023-12-20 01:06:10,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:10,913 INFO L225 Difference]: With dead ends: 267311 [2023-12-20 01:06:10,913 INFO L226 Difference]: Without dead ends: 181441 [2023-12-20 01:06:11,056 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 01:06:11,056 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 61 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:11,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 344 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:06:11,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181441 states. [2023-12-20 01:06:16,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181441 to 173451. [2023-12-20 01:06:16,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173451 states, 173450 states have (on average 1.2716921302969155) internal successors, (220575), 173450 states have internal predecessors, (220575), 0 states have call successors, (0), 0 states 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 01:06:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173451 states to 173451 states and 220575 transitions. [2023-12-20 01:06:16,614 INFO L78 Accepts]: Start accepts. Automaton has 173451 states and 220575 transitions. Word has length 96 [2023-12-20 01:06:16,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:16,614 INFO L495 AbstractCegarLoop]: Abstraction has 173451 states and 220575 transitions. [2023-12-20 01:06:16,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 01:06:16,614 INFO L276 IsEmpty]: Start isEmpty. Operand 173451 states and 220575 transitions. [2023-12-20 01:06:16,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 01:06:16,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:16,623 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:06:16,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 01:06:16,624 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:16,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:16,625 INFO L85 PathProgramCache]: Analyzing trace with hash 739350503, now seen corresponding path program 1 times [2023-12-20 01:06:16,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:16,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147038967] [2023-12-20 01:06:16,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:16,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:17,404 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:17,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:17,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147038967] [2023-12-20 01:06:17,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147038967] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:06:17,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373576884] [2023-12-20 01:06:17,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:17,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:06:17,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:06:17,405 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 01:06:17,406 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 01:06:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:17,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:06:17,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:06:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:18,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:06:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:18,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373576884] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:06:18,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:06:18,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-12-20 01:06:18,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098291101] [2023-12-20 01:06:18,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:06:18,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 01:06:18,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:18,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 01:06:18,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2023-12-20 01:06:18,867 INFO L87 Difference]: Start difference. First operand 173451 states and 220575 transitions. Second operand has 30 states, 30 states have (on average 8.333333333333334) internal successors, (250), 29 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 01:06:28,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:28,159 INFO L93 Difference]: Finished difference Result 575540 states and 728523 transitions. [2023-12-20 01:06:28,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-20 01:06:28,160 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.333333333333334) internal successors, (250), 29 states have internal predecessors, (250), 0 states have call successors, (0), 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 96 [2023-12-20 01:06:28,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:28,757 INFO L225 Difference]: With dead ends: 575540 [2023-12-20 01:06:28,757 INFO L226 Difference]: Without dead ends: 402913 [2023-12-20 01:06:28,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=496, Invalid=1856, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 01:06:28,851 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 1152 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:28,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 1632 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 01:06:29,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402913 states. [2023-12-20 01:06:39,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402913 to 349795. [2023-12-20 01:06:39,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349795 states, 349794 states have (on average 1.2665254406879478) internal successors, (443023), 349794 states have internal predecessors, (443023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)