/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.8.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:24:47,104 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:24:47,171 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 01:24:47,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:24:47,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:24:47,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:24:47,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:24:47,198 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:24:47,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:24:47,201 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:24:47,202 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:24:47,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:24:47,203 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:24:47,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:24:47,204 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:24:47,204 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:24:47,204 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:24:47,204 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:24:47,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:24:47,205 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:24:47,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:24:47,205 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:24:47,205 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:24:47,205 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:24:47,206 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:24:47,206 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:24:47,206 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:24:47,206 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:24:47,207 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:24:47,207 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:24:47,207 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:24:47,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:24:47,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:24:47,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:24:47,208 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:24:47,208 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:24:47,208 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:24:47,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:24:47,209 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:24:47,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:24:47,209 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:24:47,209 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:24:47,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:24:47,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:24:47,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:24:47,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:24:47,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:24:47,419 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:24:47,420 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:24:47,420 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c [2023-12-20 01:24:48,380 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:24:48,554 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:24:48,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c [2023-12-20 01:24:48,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e149e68a/793cb7262bba4c3b90a2b8ea54422099/FLAG05a7fb6c3 [2023-12-20 01:24:48,579 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e149e68a/793cb7262bba4c3b90a2b8ea54422099 [2023-12-20 01:24:48,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:24:48,581 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:24:48,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:24:48,582 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:24:48,587 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:24:48,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:24:48" (1/1) ... [2023-12-20 01:24:48,588 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7fa9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:24:48, skipping insertion in model container [2023-12-20 01:24:48,588 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:24:48" (1/1) ... [2023-12-20 01:24:48,630 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:24:48,828 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.8.1.ufo.UNBOUNDED.pals.c[26518,26531] [2023-12-20 01:24:48,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:24:48,839 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:24:48,911 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.8.1.ufo.UNBOUNDED.pals.c[26518,26531] [2023-12-20 01:24:48,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:24:48,932 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:24:48,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:24:48 WrapperNode [2023-12-20 01:24:48,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:24:48,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:24:48,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:24:48,934 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:24:48,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:24:48" (1/1) ... [2023-12-20 01:24:48,955 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:24:48" (1/1) ... [2023-12-20 01:24:49,002 INFO L138 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 523 [2023-12-20 01:24:49,002 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:24:49,002 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:24:49,003 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:24:49,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:24:49,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:24:48" (1/1) ... [2023-12-20 01:24:49,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:24:48" (1/1) ... [2023-12-20 01:24:49,016 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:24:48" (1/1) ... [2023-12-20 01:24:49,033 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 01:24:49,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:24:48" (1/1) ... [2023-12-20 01:24:49,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:24:48" (1/1) ... [2023-12-20 01:24:49,057 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:24:48" (1/1) ... [2023-12-20 01:24:49,075 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:24:48" (1/1) ... [2023-12-20 01:24:49,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:24:48" (1/1) ... [2023-12-20 01:24:49,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:24:48" (1/1) ... [2023-12-20 01:24:49,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:24:49,088 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:24:49,088 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:24:49,089 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:24:49,089 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:24:48" (1/1) ... [2023-12-20 01:24:49,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:24:49,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:24:49,130 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 01:24:49,157 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 01:24:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:24:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:24:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:24:49,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:24:49,302 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:24:49,304 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:24:49,751 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:24:49,796 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:24:49,797 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:24:49,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:24:49 BoogieIcfgContainer [2023-12-20 01:24:49,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:24:49,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:24:49,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:24:49,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:24:49,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:24:48" (1/3) ... [2023-12-20 01:24:49,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6743c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:24:49, skipping insertion in model container [2023-12-20 01:24:49,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:24:48" (2/3) ... [2023-12-20 01:24:49,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6743c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:24:49, skipping insertion in model container [2023-12-20 01:24:49,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:24:49" (3/3) ... [2023-12-20 01:24:49,803 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c [2023-12-20 01:24:49,814 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:24:49,814 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:24:49,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:24:49,856 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;@45e5331f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:24:49,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:24:49,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 126 states have (on average 1.8253968253968254) internal successors, (230), 127 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 01:24:49,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-20 01:24:49,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:24:49,865 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] [2023-12-20 01:24:49,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:24:49,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:24:49,868 INFO L85 PathProgramCache]: Analyzing trace with hash -19168985, now seen corresponding path program 1 times [2023-12-20 01:24:49,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:24:49,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328022152] [2023-12-20 01:24:49,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:24:49,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:24:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:24:50,024 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 01:24:50,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:24:50,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328022152] [2023-12-20 01:24:50,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328022152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:24:50,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:24:50,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 01:24:50,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430797453] [2023-12-20 01:24:50,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:24:50,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 01:24:50,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:24:50,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 01:24:50,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:24:50,049 INFO L87 Difference]: Start difference. First operand has 128 states, 126 states have (on average 1.8253968253968254) internal successors, (230), 127 states have internal predecessors, (230), 0 states have call successors, (0), 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 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 01:24:50,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:24:50,072 INFO L93 Difference]: Finished difference Result 190 states and 333 transitions. [2023-12-20 01:24:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 01:24:50,074 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-20 01:24:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:24:50,079 INFO L225 Difference]: With dead ends: 190 [2023-12-20 01:24:50,079 INFO L226 Difference]: Without dead ends: 126 [2023-12-20 01:24:50,081 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 01:24:50,083 INFO L413 NwaCegarLoop]: 222 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, 222 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 01:24:50,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:24:50,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-20 01:24:50,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-12-20 01:24:50,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.8) internal successors, (225), 125 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 01:24:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 225 transitions. [2023-12-20 01:24:50,109 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 225 transitions. Word has length 26 [2023-12-20 01:24:50,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:24:50,109 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 225 transitions. [2023-12-20 01:24:50,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 01:24:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 225 transitions. [2023-12-20 01:24:50,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-20 01:24:50,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:24:50,110 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] [2023-12-20 01:24:50,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:24:50,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:24:50,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:24:50,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1824607319, now seen corresponding path program 1 times [2023-12-20 01:24:50,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:24:50,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246600241] [2023-12-20 01:24:50,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:24:50,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:24:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:24:50,273 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 01:24:50,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:24:50,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246600241] [2023-12-20 01:24:50,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246600241] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:24:50,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:24:50,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:24:50,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439241110] [2023-12-20 01:24:50,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:24:50,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:24:50,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:24:50,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:24:50,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:24:50,276 INFO L87 Difference]: Start difference. First operand 126 states and 225 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 01:24:50,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:24:50,343 INFO L93 Difference]: Finished difference Result 190 states and 327 transitions. [2023-12-20 01:24:50,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:24:50,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-20 01:24:50,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:24:50,344 INFO L225 Difference]: With dead ends: 190 [2023-12-20 01:24:50,344 INFO L226 Difference]: Without dead ends: 126 [2023-12-20 01:24:50,345 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 01:24:50,346 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 0 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:24:50,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 602 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:24:50,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-20 01:24:50,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-12-20 01:24:50,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.312) internal successors, (164), 125 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 01:24:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 164 transitions. [2023-12-20 01:24:50,351 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 164 transitions. Word has length 26 [2023-12-20 01:24:50,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:24:50,352 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 164 transitions. [2023-12-20 01:24:50,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 01:24:50,352 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 164 transitions. [2023-12-20 01:24:50,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 01:24:50,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:24:50,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:24:50,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:24:50,354 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:24:50,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:24:50,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2057891815, now seen corresponding path program 1 times [2023-12-20 01:24:50,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:24:50,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235096438] [2023-12-20 01:24:50,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:24:50,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:24:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:24:50,615 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 01:24:50,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:24:50,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235096438] [2023-12-20 01:24:50,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235096438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:24:50,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:24:50,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 01:24:50,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779151161] [2023-12-20 01:24:50,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:24:50,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 01:24:50,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:24:50,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 01:24:50,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-20 01:24:50,617 INFO L87 Difference]: Start difference. First operand 126 states and 164 transitions. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 01:24:51,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:24:51,069 INFO L93 Difference]: Finished difference Result 1102 states and 1748 transitions. [2023-12-20 01:24:51,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 01:24:51,070 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-20 01:24:51,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:24:51,074 INFO L225 Difference]: With dead ends: 1102 [2023-12-20 01:24:51,074 INFO L226 Difference]: Without dead ends: 1041 [2023-12-20 01:24:51,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-12-20 01:24:51,079 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1956 mSDsluCounter, 4284 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 4439 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:24:51,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1956 Valid, 4439 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 01:24:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2023-12-20 01:24:51,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 185. [2023-12-20 01:24:51,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.4130434782608696) internal successors, (260), 184 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:24:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 260 transitions. [2023-12-20 01:24:51,104 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 260 transitions. Word has length 86 [2023-12-20 01:24:51,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:24:51,104 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 260 transitions. [2023-12-20 01:24:51,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 01:24:51,104 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 260 transitions. [2023-12-20 01:24:51,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 01:24:51,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:24:51,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:24:51,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:24:51,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:24:51,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:24:51,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1585272361, now seen corresponding path program 1 times [2023-12-20 01:24:51,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:24:51,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734009890] [2023-12-20 01:24:51,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:24:51,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:24:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:24:51,212 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 01:24:51,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:24:51,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734009890] [2023-12-20 01:24:51,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734009890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:24:51,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:24:51,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:24:51,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681774387] [2023-12-20 01:24:51,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:24:51,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:24:51,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:24:51,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:24:51,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:24:51,214 INFO L87 Difference]: Start difference. First operand 185 states and 260 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 01:24:51,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:24:51,233 INFO L93 Difference]: Finished difference Result 414 states and 631 transitions. [2023-12-20 01:24:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:24:51,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-20 01:24:51,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:24:51,235 INFO L225 Difference]: With dead ends: 414 [2023-12-20 01:24:51,235 INFO L226 Difference]: Without dead ends: 294 [2023-12-20 01:24:51,235 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 01:24:51,236 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 68 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:24:51,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 248 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:24:51,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-20 01:24:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 290. [2023-12-20 01:24:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.480968858131488) internal successors, (428), 289 states have internal predecessors, (428), 0 states have call successors, (0), 0 states 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 01:24:51,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 428 transitions. [2023-12-20 01:24:51,243 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 428 transitions. Word has length 88 [2023-12-20 01:24:51,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:24:51,244 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 428 transitions. [2023-12-20 01:24:51,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 01:24:51,244 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 428 transitions. [2023-12-20 01:24:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 01:24:51,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:24:51,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:24:51,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:24:51,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:24:51,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:24:51,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1587417313, now seen corresponding path program 1 times [2023-12-20 01:24:51,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:24:51,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965902009] [2023-12-20 01:24:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:24:51,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:24:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:24:51,674 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 01:24:51,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:24:51,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965902009] [2023-12-20 01:24:51,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965902009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:24:51,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:24:51,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 01:24:51,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814830222] [2023-12-20 01:24:51,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:24:51,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 01:24:51,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:24:51,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 01:24:51,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-20 01:24:51,678 INFO L87 Difference]: Start difference. First operand 290 states and 428 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 01:24:52,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:24:52,080 INFO L93 Difference]: Finished difference Result 517 states and 792 transitions. [2023-12-20 01:24:52,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 01:24:52,081 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-20 01:24:52,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:24:52,084 INFO L225 Difference]: With dead ends: 517 [2023-12-20 01:24:52,084 INFO L226 Difference]: Without dead ends: 292 [2023-12-20 01:24:52,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-12-20 01:24:52,088 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 222 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:24:52,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 820 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:24:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-20 01:24:52,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2023-12-20 01:24:52,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.4740484429065743) internal successors, (426), 289 states have internal predecessors, (426), 0 states have call successors, (0), 0 states 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 01:24:52,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 426 transitions. [2023-12-20 01:24:52,097 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 426 transitions. Word has length 88 [2023-12-20 01:24:52,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:24:52,098 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 426 transitions. [2023-12-20 01:24:52,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 01:24:52,098 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 426 transitions. [2023-12-20 01:24:52,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-20 01:24:52,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:24:52,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:24:52,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:24:52,100 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:24:52,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:24:52,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1951224140, now seen corresponding path program 1 times [2023-12-20 01:24:52,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:24:52,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461827259] [2023-12-20 01:24:52,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:24:52,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:24:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:24:52,373 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 01:24:52,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:24:52,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461827259] [2023-12-20 01:24:52,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461827259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:24:52,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:24:52,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:24:52,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025849521] [2023-12-20 01:24:52,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:24:52,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:24:52,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:24:52,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:24:52,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:24:52,374 INFO L87 Difference]: Start difference. First operand 290 states and 426 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 01:24:52,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:24:52,395 INFO L93 Difference]: Finished difference Result 298 states and 435 transitions. [2023-12-20 01:24:52,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:24:52,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-20 01:24:52,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:24:52,396 INFO L225 Difference]: With dead ends: 298 [2023-12-20 01:24:52,396 INFO L226 Difference]: Without dead ends: 296 [2023-12-20 01:24:52,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:24:52,397 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 2 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:24:52,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 785 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:24:52,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-20 01:24:52,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 294. [2023-12-20 01:24:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.4641638225255973) internal successors, (429), 293 states have internal predecessors, (429), 0 states have call successors, (0), 0 states 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 01:24:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 429 transitions. [2023-12-20 01:24:52,402 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 429 transitions. Word has length 89 [2023-12-20 01:24:52,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:24:52,403 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 429 transitions. [2023-12-20 01:24:52,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 01:24:52,403 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 429 transitions. [2023-12-20 01:24:52,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 01:24:52,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:24:52,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:24:52,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:24:52,404 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:24:52,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:24:52,404 INFO L85 PathProgramCache]: Analyzing trace with hash -945069983, now seen corresponding path program 1 times [2023-12-20 01:24:52,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:24:52,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762269022] [2023-12-20 01:24:52,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:24:52,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:24:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:24:52,453 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 01:24:52,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:24:52,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762269022] [2023-12-20 01:24:52,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762269022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:24:52,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:24:52,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:24:52,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200109211] [2023-12-20 01:24:52,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:24:52,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:24:52,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:24:52,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:24:52,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:24:52,454 INFO L87 Difference]: Start difference. First operand 294 states and 429 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:24:52,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:24:52,469 INFO L93 Difference]: Finished difference Result 736 states and 1129 transitions. [2023-12-20 01:24:52,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:24:52,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 01:24:52,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:24:52,471 INFO L225 Difference]: With dead ends: 736 [2023-12-20 01:24:52,471 INFO L226 Difference]: Without dead ends: 507 [2023-12-20 01:24:52,471 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 01:24:52,471 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 87 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:24:52,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 339 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:24:52,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2023-12-20 01:24:52,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 505. [2023-12-20 01:24:52,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.507936507936508) internal successors, (760), 504 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 01:24:52,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 760 transitions. [2023-12-20 01:24:52,481 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 760 transitions. Word has length 90 [2023-12-20 01:24:52,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:24:52,481 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 760 transitions. [2023-12-20 01:24:52,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:24:52,481 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 760 transitions. [2023-12-20 01:24:52,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 01:24:52,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:24:52,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:24:52,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:24:52,482 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:24:52,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:24:52,482 INFO L85 PathProgramCache]: Analyzing trace with hash -189685919, now seen corresponding path program 1 times [2023-12-20 01:24:52,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:24:52,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316211371] [2023-12-20 01:24:52,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:24:52,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:24:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:24:52,531 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 01:24:52,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:24:52,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316211371] [2023-12-20 01:24:52,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316211371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:24:52,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:24:52,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:24:52,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245534436] [2023-12-20 01:24:52,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:24:52,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:24:52,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:24:52,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:24:52,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:24:52,532 INFO L87 Difference]: Start difference. First operand 505 states and 760 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:24:52,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:24:52,563 INFO L93 Difference]: Finished difference Result 1353 states and 2094 transitions. [2023-12-20 01:24:52,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:24:52,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 01:24:52,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:24:52,566 INFO L225 Difference]: With dead ends: 1353 [2023-12-20 01:24:52,566 INFO L226 Difference]: Without dead ends: 913 [2023-12-20 01:24:52,567 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 01:24:52,568 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 85 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:24:52,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 341 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:24:52,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2023-12-20 01:24:52,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 911. [2023-12-20 01:24:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 910 states have (on average 1.5274725274725274) internal successors, (1390), 910 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states 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 01:24:52,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1390 transitions. [2023-12-20 01:24:52,590 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1390 transitions. Word has length 90 [2023-12-20 01:24:52,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:24:52,590 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1390 transitions. [2023-12-20 01:24:52,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:24:52,590 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1390 transitions. [2023-12-20 01:24:52,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 01:24:52,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:24:52,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:24:52,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:24:52,591 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:24:52,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:24:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash -600072607, now seen corresponding path program 1 times [2023-12-20 01:24:52,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:24:52,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280454285] [2023-12-20 01:24:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:24:52,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:24:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:24:52,674 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 01:24:52,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:24:52,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280454285] [2023-12-20 01:24:52,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280454285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:24:52,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:24:52,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:24:52,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491939683] [2023-12-20 01:24:52,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:24:52,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:24:52,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:24:52,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:24:52,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:24:52,676 INFO L87 Difference]: Start difference. First operand 911 states and 1390 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:24:52,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:24:52,707 INFO L93 Difference]: Finished difference Result 2539 states and 3928 transitions. [2023-12-20 01:24:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:24:52,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 01:24:52,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:24:52,711 INFO L225 Difference]: With dead ends: 2539 [2023-12-20 01:24:52,711 INFO L226 Difference]: Without dead ends: 1693 [2023-12-20 01:24:52,712 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 01:24:52,714 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 83 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:24:52,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 343 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:24:52,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2023-12-20 01:24:52,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1691. [2023-12-20 01:24:52,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1690 states have (on average 1.5301775147928993) internal successors, (2586), 1690 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states 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 01:24:52,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2586 transitions. [2023-12-20 01:24:52,746 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2586 transitions. Word has length 90 [2023-12-20 01:24:52,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:24:52,746 INFO L495 AbstractCegarLoop]: Abstraction has 1691 states and 2586 transitions. [2023-12-20 01:24:52,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:24:52,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2586 transitions. [2023-12-20 01:24:52,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 01:24:52,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:24:52,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:24:52,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:24:52,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:24:52,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:24:52,751 INFO L85 PathProgramCache]: Analyzing trace with hash -868655775, now seen corresponding path program 1 times [2023-12-20 01:24:52,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:24:52,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595279070] [2023-12-20 01:24:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:24:52,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:24:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:24:52,803 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 01:24:52,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:24:52,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595279070] [2023-12-20 01:24:52,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595279070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:24:52,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:24:52,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:24:52,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027118055] [2023-12-20 01:24:52,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:24:52,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:24:52,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:24:52,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:24:52,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:24:52,805 INFO L87 Difference]: Start difference. First operand 1691 states and 2586 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:24:52,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:24:52,851 INFO L93 Difference]: Finished difference Result 4815 states and 7404 transitions. [2023-12-20 01:24:52,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:24:52,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 01:24:52,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:24:52,859 INFO L225 Difference]: With dead ends: 4815 [2023-12-20 01:24:52,859 INFO L226 Difference]: Without dead ends: 3189 [2023-12-20 01:24:52,860 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 01:24:52,860 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 81 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:24:52,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 345 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:24:52,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2023-12-20 01:24:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 3187. [2023-12-20 01:24:52,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3187 states, 3186 states have (on average 1.522284996861268) internal successors, (4850), 3186 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states 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 01:24:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 4850 transitions. [2023-12-20 01:24:52,925 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 4850 transitions. Word has length 90 [2023-12-20 01:24:52,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:24:52,925 INFO L495 AbstractCegarLoop]: Abstraction has 3187 states and 4850 transitions. [2023-12-20 01:24:52,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:24:52,925 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 4850 transitions. [2023-12-20 01:24:52,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 01:24:52,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:24:52,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:24:52,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:24:52,927 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:24:52,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:24:52,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1454367903, now seen corresponding path program 1 times [2023-12-20 01:24:52,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:24:52,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695976448] [2023-12-20 01:24:52,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:24:52,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:24:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:24:53,004 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 01:24:53,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:24:53,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695976448] [2023-12-20 01:24:53,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695976448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:24:53,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:24:53,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:24:53,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475133983] [2023-12-20 01:24:53,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:24:53,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:24:53,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:24:53,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:24:53,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:24:53,005 INFO L87 Difference]: Start difference. First operand 3187 states and 4850 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:24:53,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:24:53,101 INFO L93 Difference]: Finished difference Result 9175 states and 13972 transitions. [2023-12-20 01:24:53,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:24:53,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 01:24:53,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:24:53,115 INFO L225 Difference]: With dead ends: 9175 [2023-12-20 01:24:53,115 INFO L226 Difference]: Without dead ends: 6053 [2023-12-20 01:24:53,118 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 01:24:53,119 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 77 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:24:53,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 341 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:24:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6053 states. [2023-12-20 01:24:53,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6053 to 6051. [2023-12-20 01:24:53,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6051 states, 6050 states have (on average 1.5077685950413222) internal successors, (9122), 6050 states have internal predecessors, (9122), 0 states have call successors, (0), 0 states 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 01:24:53,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6051 states to 6051 states and 9122 transitions. [2023-12-20 01:24:53,242 INFO L78 Accepts]: Start accepts. Automaton has 6051 states and 9122 transitions. Word has length 90 [2023-12-20 01:24:53,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:24:53,243 INFO L495 AbstractCegarLoop]: Abstraction has 6051 states and 9122 transitions. [2023-12-20 01:24:53,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:24:53,243 INFO L276 IsEmpty]: Start isEmpty. Operand 6051 states and 9122 transitions. [2023-12-20 01:24:53,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 01:24:53,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:24:53,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:24:53,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 01:24:53,244 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:24:53,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:24:53,244 INFO L85 PathProgramCache]: Analyzing trace with hash -565634463, now seen corresponding path program 1 times [2023-12-20 01:24:53,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:24:53,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252366985] [2023-12-20 01:24:53,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:24:53,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:24:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:24:53,301 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 01:24:53,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:24:53,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252366985] [2023-12-20 01:24:53,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252366985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:24:53,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:24:53,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:24:53,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658569848] [2023-12-20 01:24:53,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:24:53,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:24:53,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:24:53,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:24:53,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:24:53,302 INFO L87 Difference]: Start difference. First operand 6051 states and 9122 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:24:53,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:24:53,508 INFO L93 Difference]: Finished difference Result 17511 states and 26340 transitions. [2023-12-20 01:24:53,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:24:53,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 01:24:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:24:53,536 INFO L225 Difference]: With dead ends: 17511 [2023-12-20 01:24:53,536 INFO L226 Difference]: Without dead ends: 11525 [2023-12-20 01:24:53,542 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 01:24:53,542 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 75 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:24:53,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 343 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:24:53,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11525 states. [2023-12-20 01:24:53,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11525 to 11523. [2023-12-20 01:24:53,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11523 states, 11522 states have (on average 1.4888040270786322) internal successors, (17154), 11522 states have internal predecessors, (17154), 0 states have call successors, (0), 0 states 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 01:24:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11523 states to 11523 states and 17154 transitions. [2023-12-20 01:24:53,845 INFO L78 Accepts]: Start accepts. Automaton has 11523 states and 17154 transitions. Word has length 90 [2023-12-20 01:24:53,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:24:53,846 INFO L495 AbstractCegarLoop]: Abstraction has 11523 states and 17154 transitions. [2023-12-20 01:24:53,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:24:53,846 INFO L276 IsEmpty]: Start isEmpty. Operand 11523 states and 17154 transitions. [2023-12-20 01:24:53,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 01:24:53,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:24:53,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:24:53,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:24:53,847 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:24:53,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:24:53,847 INFO L85 PathProgramCache]: Analyzing trace with hash -828711839, now seen corresponding path program 1 times [2023-12-20 01:24:53,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:24:53,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317063283] [2023-12-20 01:24:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:24:53,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:24:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:24:53,904 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 01:24:53,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:24:53,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317063283] [2023-12-20 01:24:53,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317063283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:24:53,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:24:53,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:24:53,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712232723] [2023-12-20 01:24:53,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:24:53,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:24:53,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:24:53,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:24:53,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:24:53,905 INFO L87 Difference]: Start difference. First operand 11523 states and 17154 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:24:54,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:24:54,200 INFO L93 Difference]: Finished difference Result 33415 states and 49540 transitions. [2023-12-20 01:24:54,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:24:54,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 01:24:54,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:24:54,234 INFO L225 Difference]: With dead ends: 33415 [2023-12-20 01:24:54,235 INFO L226 Difference]: Without dead ends: 21957 [2023-12-20 01:24:54,252 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 01:24:54,252 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 79 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:24:54,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 347 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:24:54,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21957 states. [2023-12-20 01:24:54,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21957 to 21955. [2023-12-20 01:24:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21955 states, 21954 states have (on average 1.4664298077799034) internal successors, (32194), 21954 states have internal predecessors, (32194), 0 states have call successors, (0), 0 states 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 01:24:54,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21955 states to 21955 states and 32194 transitions. [2023-12-20 01:24:54,768 INFO L78 Accepts]: Start accepts. Automaton has 21955 states and 32194 transitions. Word has length 90 [2023-12-20 01:24:54,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:24:54,768 INFO L495 AbstractCegarLoop]: Abstraction has 21955 states and 32194 transitions. [2023-12-20 01:24:54,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:24:54,769 INFO L276 IsEmpty]: Start isEmpty. Operand 21955 states and 32194 transitions. [2023-12-20 01:24:54,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 01:24:54,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:24:54,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:24:54,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:24:54,770 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:24:54,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:24:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1361852954, now seen corresponding path program 1 times [2023-12-20 01:24:54,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:24:54,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634364885] [2023-12-20 01:24:54,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:24:54,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:24:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:24:54,818 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 01:24:54,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:24:54,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634364885] [2023-12-20 01:24:54,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634364885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:24:54,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:24:54,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:24:54,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844885187] [2023-12-20 01:24:54,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:24:54,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:24:54,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:24:54,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:24:54,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:24:54,820 INFO L87 Difference]: Start difference. First operand 21955 states and 32194 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:24:55,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:24:55,220 INFO L93 Difference]: Finished difference Result 44490 states and 65736 transitions. [2023-12-20 01:24:55,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:24:55,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-20 01:24:55,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:24:55,269 INFO L225 Difference]: With dead ends: 44490 [2023-12-20 01:24:55,269 INFO L226 Difference]: Without dead ends: 32455 [2023-12-20 01:24:55,285 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 01:24:55,285 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 86 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:24:55,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 340 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:24:55,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32455 states. [2023-12-20 01:24:56,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32455 to 32453. [2023-12-20 01:24:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32453 states, 32452 states have (on average 1.4614815727844201) internal successors, (47428), 32452 states have internal predecessors, (47428), 0 states have call successors, (0), 0 states 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 01:24:56,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32453 states to 32453 states and 47428 transitions. [2023-12-20 01:24:56,214 INFO L78 Accepts]: Start accepts. Automaton has 32453 states and 47428 transitions. Word has length 92 [2023-12-20 01:24:56,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:24:56,214 INFO L495 AbstractCegarLoop]: Abstraction has 32453 states and 47428 transitions. [2023-12-20 01:24:56,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:24:56,214 INFO L276 IsEmpty]: Start isEmpty. Operand 32453 states and 47428 transitions. [2023-12-20 01:24:56,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-20 01:24:56,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:24:56,219 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:24:56,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:24:56,219 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:24:56,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:24:56,219 INFO L85 PathProgramCache]: Analyzing trace with hash -678588941, now seen corresponding path program 1 times [2023-12-20 01:24:56,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:24:56,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146383618] [2023-12-20 01:24:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:24:56,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:24:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:24:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 01:24:56,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:24:56,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146383618] [2023-12-20 01:24:56,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146383618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:24:56,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:24:56,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 01:24:56,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922642203] [2023-12-20 01:24:56,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:24:56,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 01:24:56,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:24:56,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 01:24:56,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 01:24:56,497 INFO L87 Difference]: Start difference. First operand 32453 states and 47428 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 01:24:59,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:24:59,824 INFO L93 Difference]: Finished difference Result 297943 states and 435405 transitions. [2023-12-20 01:24:59,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 01:24:59,825 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 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 114 [2023-12-20 01:24:59,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:25:00,603 INFO L225 Difference]: With dead ends: 297943 [2023-12-20 01:25:00,603 INFO L226 Difference]: Without dead ends: 265557 [2023-12-20 01:25:00,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-20 01:25:00,688 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 1661 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:25:00,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1661 Valid, 2259 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:25:00,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265557 states. [2023-12-20 01:25:03,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265557 to 64837. [2023-12-20 01:25:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64837 states, 64836 states have (on average 1.456042939107903) internal successors, (94404), 64836 states have internal predecessors, (94404), 0 states have call successors, (0), 0 states 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 01:25:03,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64837 states to 64837 states and 94404 transitions. [2023-12-20 01:25:03,593 INFO L78 Accepts]: Start accepts. Automaton has 64837 states and 94404 transitions. Word has length 114 [2023-12-20 01:25:03,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:25:03,594 INFO L495 AbstractCegarLoop]: Abstraction has 64837 states and 94404 transitions. [2023-12-20 01:25:03,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 01:25:03,594 INFO L276 IsEmpty]: Start isEmpty. Operand 64837 states and 94404 transitions. [2023-12-20 01:25:03,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-20 01:25:03,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:25:03,599 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:25:03,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:25:03,599 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:25:03,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:25:03,599 INFO L85 PathProgramCache]: Analyzing trace with hash 76795123, now seen corresponding path program 1 times [2023-12-20 01:25:03,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:25:03,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267067609] [2023-12-20 01:25:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:25:03,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:25:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:25:03,967 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 01:25:03,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:25:03,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267067609] [2023-12-20 01:25:03,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267067609] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:25:03,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:25:03,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 01:25:03,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103487731] [2023-12-20 01:25:03,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:25:03,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 01:25:03,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:25:03,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 01:25:03,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 01:25:03,969 INFO L87 Difference]: Start difference. First operand 64837 states and 94404 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 01:25:08,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:25:08,951 INFO L93 Difference]: Finished difference Result 330327 states and 482381 transitions. [2023-12-20 01:25:08,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 01:25:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 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 114 [2023-12-20 01:25:08,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:25:09,532 INFO L225 Difference]: With dead ends: 330327 [2023-12-20 01:25:09,533 INFO L226 Difference]: Without dead ends: 297941 [2023-12-20 01:25:09,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-20 01:25:09,647 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 1685 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:25:09,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 2102 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:25:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297941 states. [2023-12-20 01:25:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297941 to 113477. [2023-12-20 01:25:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113477 states, 113476 states have (on average 1.4500687370016567) internal successors, (164548), 113476 states have internal predecessors, (164548), 0 states have call successors, (0), 0 states 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 01:25:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113477 states to 113477 states and 164548 transitions. [2023-12-20 01:25:13,699 INFO L78 Accepts]: Start accepts. Automaton has 113477 states and 164548 transitions. Word has length 114 [2023-12-20 01:25:13,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:25:13,699 INFO L495 AbstractCegarLoop]: Abstraction has 113477 states and 164548 transitions. [2023-12-20 01:25:13,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 01:25:13,699 INFO L276 IsEmpty]: Start isEmpty. Operand 113477 states and 164548 transitions. [2023-12-20 01:25:13,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-20 01:25:13,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:25:13,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:25:13,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 01:25:13,706 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:25:13,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:25:13,706 INFO L85 PathProgramCache]: Analyzing trace with hash -333591565, now seen corresponding path program 1 times [2023-12-20 01:25:13,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:25:13,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575467760] [2023-12-20 01:25:13,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:25:13,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:25:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:25:14,067 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 01:25:14,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:25:14,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575467760] [2023-12-20 01:25:14,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575467760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:25:14,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:25:14,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 01:25:14,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049488119] [2023-12-20 01:25:14,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:25:14,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 01:25:14,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:25:14,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 01:25:14,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 01:25:14,069 INFO L87 Difference]: Start difference. First operand 113477 states and 164548 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 01:25:19,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:25:19,976 INFO L93 Difference]: Finished difference Result 362711 states and 529357 transitions. [2023-12-20 01:25:19,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 01:25:19,976 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 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 114 [2023-12-20 01:25:19,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:25:20,761 INFO L225 Difference]: With dead ends: 362711 [2023-12-20 01:25:20,761 INFO L226 Difference]: Without dead ends: 330325 [2023-12-20 01:25:20,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-20 01:25:20,828 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 1721 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:25:20,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1721 Valid, 2038 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 01:25:21,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330325 states. [2023-12-20 01:25:25,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330325 to 145861. [2023-12-20 01:25:25,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145861 states, 145860 states have (on average 1.4501851090086384) internal successors, (211524), 145860 states have internal predecessors, (211524), 0 states have call successors, (0), 0 states 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 01:25:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145861 states to 145861 states and 211524 transitions. [2023-12-20 01:25:25,790 INFO L78 Accepts]: Start accepts. Automaton has 145861 states and 211524 transitions. Word has length 114 [2023-12-20 01:25:25,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:25:25,791 INFO L495 AbstractCegarLoop]: Abstraction has 145861 states and 211524 transitions. [2023-12-20 01:25:25,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 01:25:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 145861 states and 211524 transitions. [2023-12-20 01:25:25,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-20 01:25:25,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:25:25,798 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:25:25,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:25:25,799 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:25:25,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:25:25,799 INFO L85 PathProgramCache]: Analyzing trace with hash -602174733, now seen corresponding path program 1 times [2023-12-20 01:25:25,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:25:25,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166141101] [2023-12-20 01:25:25,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:25:25,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:25:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:25:25,992 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 01:25:25,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:25:25,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166141101] [2023-12-20 01:25:25,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166141101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:25:25,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:25:25,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 01:25:25,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752072545] [2023-12-20 01:25:25,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:25:25,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 01:25:25,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:25:25,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 01:25:25,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 01:25:25,994 INFO L87 Difference]: Start difference. First operand 145861 states and 211524 transitions. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:25:33,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:25:33,433 INFO L93 Difference]: Finished difference Result 395095 states and 576333 transitions. [2023-12-20 01:25:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 01:25:33,433 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-20 01:25:33,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:25:33,936 INFO L225 Difference]: With dead ends: 395095 [2023-12-20 01:25:33,937 INFO L226 Difference]: Without dead ends: 362709 [2023-12-20 01:25:33,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-20 01:25:33,990 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1875 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:25:33,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1875 Valid, 1935 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:25:34,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362709 states. [2023-12-20 01:25:39,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362709 to 178245. [2023-12-20 01:25:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178245 states, 178244 states have (on average 1.4502591952604296) internal successors, (258500), 178244 states have internal predecessors, (258500), 0 states have call successors, (0), 0 states 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 01:25:40,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178245 states to 178245 states and 258500 transitions. [2023-12-20 01:25:40,388 INFO L78 Accepts]: Start accepts. Automaton has 178245 states and 258500 transitions. Word has length 114 [2023-12-20 01:25:40,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:25:40,388 INFO L495 AbstractCegarLoop]: Abstraction has 178245 states and 258500 transitions. [2023-12-20 01:25:40,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:25:40,388 INFO L276 IsEmpty]: Start isEmpty. Operand 178245 states and 258500 transitions. [2023-12-20 01:25:40,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-20 01:25:40,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:25:40,395 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:25:40,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 01:25:40,395 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:25:40,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:25:40,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1187886861, now seen corresponding path program 1 times [2023-12-20 01:25:40,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:25:40,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753347308] [2023-12-20 01:25:40,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:25:40,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:25:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:25:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 01:25:40,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:25:40,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753347308] [2023-12-20 01:25:40,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753347308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:25:40,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:25:40,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 01:25:40,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212512733] [2023-12-20 01:25:40,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:25:40,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 01:25:40,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:25:40,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 01:25:40,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 01:25:40,575 INFO L87 Difference]: Start difference. First operand 178245 states and 258500 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 01:25:49,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:25:49,241 INFO L93 Difference]: Finished difference Result 427479 states and 623309 transitions. [2023-12-20 01:25:49,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 01:25:49,241 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 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 114 [2023-12-20 01:25:49,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:25:50,253 INFO L225 Difference]: With dead ends: 427479 [2023-12-20 01:25:50,254 INFO L226 Difference]: Without dead ends: 395093 [2023-12-20 01:25:50,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-20 01:25:50,357 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 1982 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:25:50,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1982 Valid, 1994 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:25:50,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395093 states.