/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:48:42,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:48:42,843 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 13:48:42,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:48:42,848 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:48:42,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:48:42,872 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:48:42,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:48:42,873 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:48:42,873 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:48:42,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:48:42,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:48:42,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:48:42,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:48:42,874 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:48:42,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:48:42,875 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:48:42,875 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:48:42,876 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:48:42,879 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:48:42,882 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:48:42,882 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:48:42,883 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:48:42,884 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:48:42,884 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:48:42,884 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:48:42,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:48:42,884 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:48:42,885 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:48:42,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:48:42,886 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:48:42,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:48:42,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:48:42,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:48:42,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:48:42,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:48:42,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:48:42,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:48:42,887 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:48:42,887 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:48:42,887 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:48:42,888 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:48:42,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:48:42,888 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:48:43,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:48:43,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:48:43,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:48:43,115 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:48:43,115 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:48:43,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-12-21 13:48:44,080 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:48:44,247 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:48:44,247 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-12-21 13:48:44,266 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d8d0f14c/097128c991f84e40badd5f3a8dfda0db/FLAGe99590310 [2023-12-21 13:48:44,283 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d8d0f14c/097128c991f84e40badd5f3a8dfda0db [2023-12-21 13:48:44,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:48:44,286 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:48:44,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:48:44,287 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:48:44,290 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:48:44,290 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:48:44" (1/1) ... [2023-12-21 13:48:44,291 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4428face and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:44, skipping insertion in model container [2023-12-21 13:48:44,291 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:48:44" (1/1) ... [2023-12-21 13:48:44,325 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:48:44,496 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-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4902,4915] [2023-12-21 13:48:44,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:48:44,526 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:48:44,556 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-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4902,4915] [2023-12-21 13:48:44,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:48:44,601 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:48:44,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:44 WrapperNode [2023-12-21 13:48:44,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:48:44,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:48:44,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:48:44,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:48:44,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:44" (1/1) ... [2023-12-21 13:48:44,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:44" (1/1) ... [2023-12-21 13:48:44,646 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 371 [2023-12-21 13:48:44,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:48:44,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:48:44,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:48:44,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:48:44,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:44" (1/1) ... [2023-12-21 13:48:44,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:44" (1/1) ... [2023-12-21 13:48:44,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:44" (1/1) ... [2023-12-21 13:48:44,686 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]. [2023-12-21 13:48:44,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:44" (1/1) ... [2023-12-21 13:48:44,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:44" (1/1) ... [2023-12-21 13:48:44,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:44" (1/1) ... [2023-12-21 13:48:44,693 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:44" (1/1) ... [2023-12-21 13:48:44,695 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:44" (1/1) ... [2023-12-21 13:48:44,696 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:44" (1/1) ... [2023-12-21 13:48:44,698 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:48:44,698 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:48:44,698 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:48:44,698 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:48:44,699 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:44" (1/1) ... [2023-12-21 13:48:44,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:48:44,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:48:44,737 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) [2023-12-21 13:48:44,754 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 [2023-12-21 13:48:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:48:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:48:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:48:44,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:48:44,876 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:48:44,878 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:48:45,159 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:48:45,180 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:48:45,180 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:48:45,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:48:45 BoogieIcfgContainer [2023-12-21 13:48:45,180 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:48:45,182 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:48:45,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:48:45,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:48:45,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:48:44" (1/3) ... [2023-12-21 13:48:45,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a96e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:48:45, skipping insertion in model container [2023-12-21 13:48:45,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:48:44" (2/3) ... [2023-12-21 13:48:45,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a96e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:48:45, skipping insertion in model container [2023-12-21 13:48:45,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:48:45" (3/3) ... [2023-12-21 13:48:45,186 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-12-21 13:48:45,200 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:48:45,200 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:48:45,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:48:45,235 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;@39cf2e35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:48:45,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:48:45,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 75 states have (on average 1.7466666666666666) internal successors, (131), 76 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 13:48:45,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:45,244 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] [2023-12-21 13:48:45,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:45,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:45,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1988474663, now seen corresponding path program 1 times [2023-12-21 13:48:45,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:45,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036504635] [2023-12-21 13:48:45,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:45,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:48:45,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:45,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036504635] [2023-12-21 13:48:45,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036504635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:48:45,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:48:45,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:48:45,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507242286] [2023-12-21 13:48:45,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:48:45,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:48:45,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:45,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:48:45,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:48:45,600 INFO L87 Difference]: Start difference. First operand has 77 states, 75 states have (on average 1.7466666666666666) internal successors, (131), 76 states have internal predecessors, (131), 0 states have call successors, (0), 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 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:45,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:45,643 INFO L93 Difference]: Finished difference Result 173 states and 282 transitions. [2023-12-21 13:48:45,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:48:45,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2023-12-21 13:48:45,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:45,655 INFO L225 Difference]: With dead ends: 173 [2023-12-21 13:48:45,655 INFO L226 Difference]: Without dead ends: 117 [2023-12-21 13:48:45,657 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 [2023-12-21 13:48:45,667 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 90 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:45,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 269 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:48:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-21 13:48:45,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2023-12-21 13:48:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.4736842105263157) internal successors, (168), 114 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:45,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2023-12-21 13:48:45,692 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 46 [2023-12-21 13:48:45,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:45,692 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2023-12-21 13:48:45,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:45,693 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2023-12-21 13:48:45,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 13:48:45,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:45,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:48:45,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:48:45,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:45,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:45,694 INFO L85 PathProgramCache]: Analyzing trace with hash 279676618, now seen corresponding path program 1 times [2023-12-21 13:48:45,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:45,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487930616] [2023-12-21 13:48:45,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:45,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:48:45,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:45,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487930616] [2023-12-21 13:48:45,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487930616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:48:45,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:48:45,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:48:45,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745183202] [2023-12-21 13:48:45,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:48:45,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:48:45,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:45,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:48:45,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:48:45,785 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:45,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:45,803 INFO L93 Difference]: Finished difference Result 279 states and 428 transitions. [2023-12-21 13:48:45,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:48:45,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-21 13:48:45,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:45,811 INFO L225 Difference]: With dead ends: 279 [2023-12-21 13:48:45,811 INFO L226 Difference]: Without dead ends: 189 [2023-12-21 13:48:45,811 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 [2023-12-21 13:48:45,812 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 64 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:45,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 235 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:48:45,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-21 13:48:45,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2023-12-21 13:48:45,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.5161290322580645) internal successors, (282), 186 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:45,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 282 transitions. [2023-12-21 13:48:45,825 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 282 transitions. Word has length 47 [2023-12-21 13:48:45,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:45,825 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 282 transitions. [2023-12-21 13:48:45,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:45,825 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 282 transitions. [2023-12-21 13:48:45,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 13:48:45,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:45,826 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] [2023-12-21 13:48:45,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:48:45,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:45,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:45,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1569137944, now seen corresponding path program 1 times [2023-12-21 13:48:45,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:45,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980420361] [2023-12-21 13:48:45,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:45,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:45,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:48:45,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:45,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980420361] [2023-12-21 13:48:45,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980420361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:48:45,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:48:45,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:48:45,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795439622] [2023-12-21 13:48:45,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:48:45,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:48:45,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:45,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:48:45,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:48:45,928 INFO L87 Difference]: Start difference. First operand 187 states and 282 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:45,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:45,955 INFO L93 Difference]: Finished difference Result 479 states and 744 transitions. [2023-12-21 13:48:45,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:48:45,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-12-21 13:48:45,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:45,963 INFO L225 Difference]: With dead ends: 479 [2023-12-21 13:48:45,963 INFO L226 Difference]: Without dead ends: 317 [2023-12-21 13:48:45,963 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 [2023-12-21 13:48:45,964 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 59 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:45,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 231 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:48:45,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-12-21 13:48:45,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 315. [2023-12-21 13:48:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.535031847133758) internal successors, (482), 314 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 482 transitions. [2023-12-21 13:48:45,996 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 482 transitions. Word has length 48 [2023-12-21 13:48:45,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:45,999 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 482 transitions. [2023-12-21 13:48:46,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:46,003 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 482 transitions. [2023-12-21 13:48:46,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 13:48:46,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:46,004 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] [2023-12-21 13:48:46,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:48:46,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:46,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:46,005 INFO L85 PathProgramCache]: Analyzing trace with hash 38449077, now seen corresponding path program 1 times [2023-12-21 13:48:46,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:46,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849790148] [2023-12-21 13:48:46,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:46,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:48:46,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:46,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849790148] [2023-12-21 13:48:46,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849790148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:48:46,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:48:46,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:48:46,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723021638] [2023-12-21 13:48:46,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:48:46,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:48:46,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:46,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:48:46,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:48:46,101 INFO L87 Difference]: Start difference. First operand 315 states and 482 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:46,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:46,124 INFO L93 Difference]: Finished difference Result 831 states and 1292 transitions. [2023-12-21 13:48:46,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:48:46,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-12-21 13:48:46,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:46,129 INFO L225 Difference]: With dead ends: 831 [2023-12-21 13:48:46,129 INFO L226 Difference]: Without dead ends: 541 [2023-12-21 13:48:46,133 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 [2023-12-21 13:48:46,138 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 54 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:46,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 227 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:48:46,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2023-12-21 13:48:46,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 539. [2023-12-21 13:48:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.5353159851301115) internal successors, (826), 538 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 826 transitions. [2023-12-21 13:48:46,166 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 826 transitions. Word has length 49 [2023-12-21 13:48:46,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:46,166 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 826 transitions. [2023-12-21 13:48:46,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:46,166 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 826 transitions. [2023-12-21 13:48:46,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 13:48:46,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:46,169 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] [2023-12-21 13:48:46,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:48:46,169 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:46,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:46,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1077728212, now seen corresponding path program 1 times [2023-12-21 13:48:46,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:46,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432797643] [2023-12-21 13:48:46,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:46,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:48:46,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:46,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432797643] [2023-12-21 13:48:46,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432797643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:48:46,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:48:46,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:48:46,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662142167] [2023-12-21 13:48:46,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:48:46,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:48:46,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:46,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:48:46,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:48:46,298 INFO L87 Difference]: Start difference. First operand 539 states and 826 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:46,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:46,451 INFO L93 Difference]: Finished difference Result 4651 states and 7234 transitions. [2023-12-21 13:48:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:48:46,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-12-21 13:48:46,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:46,488 INFO L225 Difference]: With dead ends: 4651 [2023-12-21 13:48:46,488 INFO L226 Difference]: Without dead ends: 4137 [2023-12-21 13:48:46,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:48:46,490 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 784 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:46,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 991 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:48:46,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2023-12-21 13:48:46,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 1051. [2023-12-21 13:48:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.5180952380952382) internal successors, (1594), 1050 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:46,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1594 transitions. [2023-12-21 13:48:46,531 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1594 transitions. Word has length 50 [2023-12-21 13:48:46,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:46,533 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1594 transitions. [2023-12-21 13:48:46,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:46,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1594 transitions. [2023-12-21 13:48:46,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:48:46,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:46,537 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] [2023-12-21 13:48:46,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:48:46,538 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:46,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:46,539 INFO L85 PathProgramCache]: Analyzing trace with hash -312128720, now seen corresponding path program 1 times [2023-12-21 13:48:46,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:46,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458361564] [2023-12-21 13:48:46,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:46,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:48:46,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:46,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458361564] [2023-12-21 13:48:46,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458361564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:48:46,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:48:46,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:48:46,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188814200] [2023-12-21 13:48:46,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:48:46,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:48:46,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:46,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:48:46,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:48:46,612 INFO L87 Difference]: Start difference. First operand 1051 states and 1594 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:46,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:46,629 INFO L93 Difference]: Finished difference Result 2569 states and 3910 transitions. [2023-12-21 13:48:46,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:48:46,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-21 13:48:46,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:46,633 INFO L225 Difference]: With dead ends: 2569 [2023-12-21 13:48:46,633 INFO L226 Difference]: Without dead ends: 1543 [2023-12-21 13:48:46,634 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 [2023-12-21 13:48:46,636 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 45 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:46,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 199 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:48:46,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-12-21 13:48:46,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1541. [2023-12-21 13:48:46,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.5038961038961038) internal successors, (2316), 1540 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2316 transitions. [2023-12-21 13:48:46,657 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2316 transitions. Word has length 52 [2023-12-21 13:48:46,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:46,658 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 2316 transitions. [2023-12-21 13:48:46,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:46,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2316 transitions. [2023-12-21 13:48:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:48:46,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:46,658 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] [2023-12-21 13:48:46,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:48:46,658 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:46,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:46,659 INFO L85 PathProgramCache]: Analyzing trace with hash -291126065, now seen corresponding path program 1 times [2023-12-21 13:48:46,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:46,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604949237] [2023-12-21 13:48:46,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:46,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:48:46,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:46,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604949237] [2023-12-21 13:48:46,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604949237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:48:46,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:48:46,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:48:46,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592098360] [2023-12-21 13:48:46,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:48:46,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:48:46,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:46,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:48:46,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:48:46,868 INFO L87 Difference]: Start difference. First operand 1541 states and 2316 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:46,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:46,950 INFO L93 Difference]: Finished difference Result 3057 states and 4606 transitions. [2023-12-21 13:48:46,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:48:46,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-21 13:48:46,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:46,954 INFO L225 Difference]: With dead ends: 3057 [2023-12-21 13:48:46,955 INFO L226 Difference]: Without dead ends: 1543 [2023-12-21 13:48:46,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:48:46,957 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 159 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:46,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 325 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:48:46,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-12-21 13:48:46,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1541. [2023-12-21 13:48:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.4883116883116883) internal successors, (2292), 1540 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2292 transitions. [2023-12-21 13:48:46,977 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2292 transitions. Word has length 52 [2023-12-21 13:48:46,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:46,978 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 2292 transitions. [2023-12-21 13:48:46,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:46,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2292 transitions. [2023-12-21 13:48:46,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:48:46,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:46,980 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] [2023-12-21 13:48:46,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:48:46,980 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:46,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:46,981 INFO L85 PathProgramCache]: Analyzing trace with hash -436882815, now seen corresponding path program 1 times [2023-12-21 13:48:46,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:46,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942631663] [2023-12-21 13:48:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:46,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:48:47,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:47,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942631663] [2023-12-21 13:48:47,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942631663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:48:47,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:48:47,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:48:47,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648680452] [2023-12-21 13:48:47,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:48:47,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:48:47,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:47,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:48:47,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:48:47,070 INFO L87 Difference]: Start difference. First operand 1541 states and 2292 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:47,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:47,124 INFO L93 Difference]: Finished difference Result 3055 states and 4557 transitions. [2023-12-21 13:48:47,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:48:47,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-21 13:48:47,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:47,128 INFO L225 Difference]: With dead ends: 3055 [2023-12-21 13:48:47,128 INFO L226 Difference]: Without dead ends: 1541 [2023-12-21 13:48:47,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:48:47,130 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 249 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:47,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 81 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:48:47,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2023-12-21 13:48:47,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1541. [2023-12-21 13:48:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.4727272727272727) internal successors, (2268), 1540 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2268 transitions. [2023-12-21 13:48:47,148 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2268 transitions. Word has length 53 [2023-12-21 13:48:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:47,149 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 2268 transitions. [2023-12-21 13:48:47,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:47,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2268 transitions. [2023-12-21 13:48:47,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:48:47,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:47,149 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] [2023-12-21 13:48:47,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:48:47,150 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:47,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:47,150 INFO L85 PathProgramCache]: Analyzing trace with hash 428649574, now seen corresponding path program 1 times [2023-12-21 13:48:47,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:47,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189047733] [2023-12-21 13:48:47,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:47,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:47,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:48:47,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:47,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189047733] [2023-12-21 13:48:47,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189047733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:48:47,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:48:47,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:48:47,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108728415] [2023-12-21 13:48:47,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:48:47,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:48:47,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:47,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:48:47,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:48:47,222 INFO L87 Difference]: Start difference. First operand 1541 states and 2268 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:47,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:47,312 INFO L93 Difference]: Finished difference Result 4081 states and 6046 transitions. [2023-12-21 13:48:47,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:48:47,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-21 13:48:47,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:47,319 INFO L225 Difference]: With dead ends: 4081 [2023-12-21 13:48:47,319 INFO L226 Difference]: Without dead ends: 2567 [2023-12-21 13:48:47,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:48:47,321 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 427 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:47,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 107 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:48:47,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2023-12-21 13:48:47,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2565. [2023-12-21 13:48:47,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2564 states have (on average 1.4711388455538221) internal successors, (3772), 2564 states have internal predecessors, (3772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3772 transitions. [2023-12-21 13:48:47,351 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3772 transitions. Word has length 53 [2023-12-21 13:48:47,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:47,351 INFO L495 AbstractCegarLoop]: Abstraction has 2565 states and 3772 transitions. [2023-12-21 13:48:47,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:47,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3772 transitions. [2023-12-21 13:48:47,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:48:47,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:47,352 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] [2023-12-21 13:48:47,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:48:47,352 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:47,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:47,353 INFO L85 PathProgramCache]: Analyzing trace with hash -334214133, now seen corresponding path program 1 times [2023-12-21 13:48:47,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:47,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9472794] [2023-12-21 13:48:47,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:47,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:47,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:48:47,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:47,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9472794] [2023-12-21 13:48:47,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9472794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:48:47,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:48:47,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:48:47,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051749565] [2023-12-21 13:48:47,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:48:47,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:48:47,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:47,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:48:47,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:48:47,402 INFO L87 Difference]: Start difference. First operand 2565 states and 3772 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:47,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:47,465 INFO L93 Difference]: Finished difference Result 5103 states and 7517 transitions. [2023-12-21 13:48:47,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:48:47,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-21 13:48:47,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:47,471 INFO L225 Difference]: With dead ends: 5103 [2023-12-21 13:48:47,471 INFO L226 Difference]: Without dead ends: 2565 [2023-12-21 13:48:47,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:48:47,474 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 259 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:47,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 73 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:48:47,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2023-12-21 13:48:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 2565. [2023-12-21 13:48:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2564 states have (on average 1.4555382215288613) internal successors, (3732), 2564 states have internal predecessors, (3732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3732 transitions. [2023-12-21 13:48:47,509 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3732 transitions. Word has length 53 [2023-12-21 13:48:47,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:47,509 INFO L495 AbstractCegarLoop]: Abstraction has 2565 states and 3732 transitions. [2023-12-21 13:48:47,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:47,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3732 transitions. [2023-12-21 13:48:47,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:48:47,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:47,510 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] [2023-12-21 13:48:47,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:48:47,510 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:47,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:47,511 INFO L85 PathProgramCache]: Analyzing trace with hash -206128826, now seen corresponding path program 1 times [2023-12-21 13:48:47,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:47,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483694587] [2023-12-21 13:48:47,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:47,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:48:47,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:47,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483694587] [2023-12-21 13:48:47,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483694587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:48:47,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:48:47,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:48:47,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709664371] [2023-12-21 13:48:47,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:48:47,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:48:47,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:47,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:48:47,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:48:47,647 INFO L87 Difference]: Start difference. First operand 2565 states and 3732 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:47,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:47,682 INFO L93 Difference]: Finished difference Result 4887 states and 7076 transitions. [2023-12-21 13:48:47,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:48:47,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-21 13:48:47,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:47,692 INFO L225 Difference]: With dead ends: 4887 [2023-12-21 13:48:47,692 INFO L226 Difference]: Without dead ends: 4885 [2023-12-21 13:48:47,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:48:47,694 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 138 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:47,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 458 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:48:47,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4885 states. [2023-12-21 13:48:47,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4885 to 2693. [2023-12-21 13:48:47,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2693 states, 2692 states have (on average 1.4309063893016345) internal successors, (3852), 2692 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:47,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 3852 transitions. [2023-12-21 13:48:47,760 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 3852 transitions. Word has length 53 [2023-12-21 13:48:47,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:47,760 INFO L495 AbstractCegarLoop]: Abstraction has 2693 states and 3852 transitions. [2023-12-21 13:48:47,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:47,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 3852 transitions. [2023-12-21 13:48:47,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 13:48:47,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:47,764 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:48:47,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:48:47,765 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:47,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:47,765 INFO L85 PathProgramCache]: Analyzing trace with hash -664699894, now seen corresponding path program 1 times [2023-12-21 13:48:47,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:47,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033401556] [2023-12-21 13:48:47,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:47,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:48:47,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:47,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033401556] [2023-12-21 13:48:47,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033401556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:48:47,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:48:47,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:48:47,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860527746] [2023-12-21 13:48:47,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:48:47,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:48:47,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:47,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:48:47,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:48:47,855 INFO L87 Difference]: Start difference. First operand 2693 states and 3852 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:47,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:47,944 INFO L93 Difference]: Finished difference Result 13719 states and 19665 transitions. [2023-12-21 13:48:47,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:48:47,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-21 13:48:47,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:47,979 INFO L225 Difference]: With dead ends: 13719 [2023-12-21 13:48:47,979 INFO L226 Difference]: Without dead ends: 11541 [2023-12-21 13:48:47,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:48:47,986 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 478 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:47,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 522 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:48:47,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11541 states. [2023-12-21 13:48:48,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11541 to 5117. [2023-12-21 13:48:48,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 1.4268960125097732) internal successors, (7300), 5116 states have internal predecessors, (7300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:48,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7300 transitions. [2023-12-21 13:48:48,099 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7300 transitions. Word has length 75 [2023-12-21 13:48:48,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:48,099 INFO L495 AbstractCegarLoop]: Abstraction has 5117 states and 7300 transitions. [2023-12-21 13:48:48,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:48,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7300 transitions. [2023-12-21 13:48:48,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 13:48:48,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:48,101 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:48:48,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:48:48,101 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:48,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:48,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1905725340, now seen corresponding path program 1 times [2023-12-21 13:48:48,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:48,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946096860] [2023-12-21 13:48:48,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:48,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:48:48,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:48,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946096860] [2023-12-21 13:48:48,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946096860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:48:48,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:48:48,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:48:48,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087458448] [2023-12-21 13:48:48,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:48:48,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:48:48,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:48,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:48:48,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:48:48,193 INFO L87 Difference]: Start difference. First operand 5117 states and 7300 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:48,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:48,279 INFO L93 Difference]: Finished difference Result 16383 states and 23457 transitions. [2023-12-21 13:48:48,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:48:48,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-21 13:48:48,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:48,298 INFO L225 Difference]: With dead ends: 16383 [2023-12-21 13:48:48,299 INFO L226 Difference]: Without dead ends: 13717 [2023-12-21 13:48:48,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:48:48,305 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 492 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:48,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 586 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:48:48,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13717 states. [2023-12-21 13:48:48,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13717 to 8869. [2023-12-21 13:48:48,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8869 states, 8868 states have (on average 1.4221921515561569) internal successors, (12612), 8868 states have internal predecessors, (12612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:48,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8869 states to 8869 states and 12612 transitions. [2023-12-21 13:48:48,459 INFO L78 Accepts]: Start accepts. Automaton has 8869 states and 12612 transitions. Word has length 75 [2023-12-21 13:48:48,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:48,459 INFO L495 AbstractCegarLoop]: Abstraction has 8869 states and 12612 transitions. [2023-12-21 13:48:48,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:48,460 INFO L276 IsEmpty]: Start isEmpty. Operand 8869 states and 12612 transitions. [2023-12-21 13:48:48,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 13:48:48,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:48,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:48:48,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:48:48,461 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:48,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:48,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1235295850, now seen corresponding path program 1 times [2023-12-21 13:48:48,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:48,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251434866] [2023-12-21 13:48:48,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:48,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:48:48,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:48,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251434866] [2023-12-21 13:48:48,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251434866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:48:48,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:48:48,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:48:48,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845016126] [2023-12-21 13:48:48,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:48:48,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:48:48,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:48,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:48:48,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:48:48,536 INFO L87 Difference]: Start difference. First operand 8869 states and 12612 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:48,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:48,625 INFO L93 Difference]: Finished difference Result 19047 states and 27241 transitions. [2023-12-21 13:48:48,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:48:48,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-21 13:48:48,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:48,648 INFO L225 Difference]: With dead ends: 19047 [2023-12-21 13:48:48,648 INFO L226 Difference]: Without dead ends: 16381 [2023-12-21 13:48:48,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:48:48,656 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 442 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:48,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 629 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:48:48,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16381 states. [2023-12-21 13:48:48,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16381 to 11533. [2023-12-21 13:48:48,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11533 states, 11532 states have (on average 1.4217828650711064) internal successors, (16396), 11532 states have internal predecessors, (16396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:48,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11533 states to 11533 states and 16396 transitions. [2023-12-21 13:48:48,864 INFO L78 Accepts]: Start accepts. Automaton has 11533 states and 16396 transitions. Word has length 75 [2023-12-21 13:48:48,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:48,864 INFO L495 AbstractCegarLoop]: Abstraction has 11533 states and 16396 transitions. [2023-12-21 13:48:48,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:48,865 INFO L276 IsEmpty]: Start isEmpty. Operand 11533 states and 16396 transitions. [2023-12-21 13:48:48,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 13:48:48,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:48,866 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:48:48,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:48:48,866 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:48,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:48,867 INFO L85 PathProgramCache]: Analyzing trace with hash -2093196528, now seen corresponding path program 1 times [2023-12-21 13:48:48,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:48,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028018985] [2023-12-21 13:48:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:48,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:48,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 13:48:48,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:48,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028018985] [2023-12-21 13:48:48,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028018985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:48:48,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:48:48,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:48:48,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257909277] [2023-12-21 13:48:48,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:48:48,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:48:48,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:48,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:48:48,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:48:48,990 INFO L87 Difference]: Start difference. First operand 11533 states and 16396 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:49,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:49,088 INFO L93 Difference]: Finished difference Result 21711 states and 31025 transitions. [2023-12-21 13:48:49,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:48:49,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-21 13:48:49,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:49,115 INFO L225 Difference]: With dead ends: 21711 [2023-12-21 13:48:49,115 INFO L226 Difference]: Without dead ends: 19045 [2023-12-21 13:48:49,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:48:49,124 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 478 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:49,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 624 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:48:49,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19045 states. [2023-12-21 13:48:49,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19045 to 14197. [2023-12-21 13:48:49,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14197 states, 14196 states have (on average 1.42152719075796) internal successors, (20180), 14196 states have internal predecessors, (20180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:49,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14197 states to 14197 states and 20180 transitions. [2023-12-21 13:48:49,361 INFO L78 Accepts]: Start accepts. Automaton has 14197 states and 20180 transitions. Word has length 75 [2023-12-21 13:48:49,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:49,361 INFO L495 AbstractCegarLoop]: Abstraction has 14197 states and 20180 transitions. [2023-12-21 13:48:49,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:49,361 INFO L276 IsEmpty]: Start isEmpty. Operand 14197 states and 20180 transitions. [2023-12-21 13:48:49,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 13:48:49,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:49,364 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:48:49,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:48:49,364 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:49,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:49,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1404189083, now seen corresponding path program 1 times [2023-12-21 13:48:49,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:49,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877146778] [2023-12-21 13:48:49,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:49,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:48:49,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:49,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877146778] [2023-12-21 13:48:49,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877146778] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:48:49,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785349372] [2023-12-21 13:48:49,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:49,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:48:49,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:48:49,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:48:49,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 13:48:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:49,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 13:48:49,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:48:50,020 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:48:50,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:48:50,306 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:48:50,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785349372] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:48:50,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:48:50,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-21 13:48:50,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879174956] [2023-12-21 13:48:50,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:48:50,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 13:48:50,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:48:50,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 13:48:50,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-21 13:48:50,308 INFO L87 Difference]: Start difference. First operand 14197 states and 20180 transitions. Second operand has 18 states, 18 states have (on average 11.944444444444445) internal successors, (215), 18 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:57,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:48:57,501 INFO L93 Difference]: Finished difference Result 182560 states and 253224 transitions. [2023-12-21 13:48:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2023-12-21 13:48:57,510 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.944444444444445) internal successors, (215), 18 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-21 13:48:57,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:48:57,906 INFO L225 Difference]: With dead ends: 182560 [2023-12-21 13:48:57,907 INFO L226 Difference]: Without dead ends: 168390 [2023-12-21 13:48:57,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21294 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=6678, Invalid=39332, Unknown=0, NotChecked=0, Total=46010 [2023-12-21 13:48:57,960 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 8793 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8793 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:48:57,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8793 Valid, 1895 Invalid, 2425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 13:48:58,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168390 states. [2023-12-21 13:48:59,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168390 to 76461. [2023-12-21 13:48:59,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76461 states, 76460 states have (on average 1.3813497253465865) internal successors, (105618), 76460 states have internal predecessors, (105618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:59,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76461 states to 76461 states and 105618 transitions. [2023-12-21 13:48:59,426 INFO L78 Accepts]: Start accepts. Automaton has 76461 states and 105618 transitions. Word has length 76 [2023-12-21 13:48:59,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:48:59,426 INFO L495 AbstractCegarLoop]: Abstraction has 76461 states and 105618 transitions. [2023-12-21 13:48:59,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.944444444444445) internal successors, (215), 18 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:48:59,426 INFO L276 IsEmpty]: Start isEmpty. Operand 76461 states and 105618 transitions. [2023-12-21 13:48:59,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 13:48:59,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:48:59,429 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:48:59,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 13:48:59,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 13:48:59,635 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:48:59,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:48:59,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1518757522, now seen corresponding path program 1 times [2023-12-21 13:48:59,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:48:59,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22789721] [2023-12-21 13:48:59,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:59,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:48:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:48:59,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:48:59,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22789721] [2023-12-21 13:48:59,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22789721] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:48:59,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652434284] [2023-12-21 13:48:59,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:48:59,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:48:59,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:48:59,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:48:59,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 13:48:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:48:59,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 13:48:59,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:49:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:49:00,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:49:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:49:01,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652434284] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:49:01,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:49:01,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-21 13:49:01,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514696857] [2023-12-21 13:49:01,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:49:01,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 13:49:01,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:49:01,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 13:49:01,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2023-12-21 13:49:01,134 INFO L87 Difference]: Start difference. First operand 76461 states and 105618 transitions. Second operand has 23 states, 23 states have (on average 9.521739130434783) internal successors, (219), 22 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:49:19,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:49:19,790 INFO L93 Difference]: Finished difference Result 2017953 states and 2704963 transitions. [2023-12-21 13:49:19,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 415 states. [2023-12-21 13:49:19,790 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.521739130434783) internal successors, (219), 22 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-21 13:49:19,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:49:24,224 INFO L225 Difference]: With dead ends: 2017953 [2023-12-21 13:49:24,225 INFO L226 Difference]: Without dead ends: 1941519 [2023-12-21 13:49:24,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 434 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86826 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=19005, Invalid=170655, Unknown=0, NotChecked=0, Total=189660 [2023-12-21 13:49:24,626 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 14317 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 3265 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14317 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 3311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:49:24,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14317 Valid, 2795 Invalid, 3311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3265 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 13:49:26,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941519 states. [2023-12-21 13:49:39,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941519 to 454959. [2023-12-21 13:49:40,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454959 states, 454958 states have (on average 1.3699198607343974) internal successors, (623256), 454958 states have internal predecessors, (623256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:49:41,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454959 states to 454959 states and 623256 transitions. [2023-12-21 13:49:41,544 INFO L78 Accepts]: Start accepts. Automaton has 454959 states and 623256 transitions. Word has length 77 [2023-12-21 13:49:41,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:49:41,544 INFO L495 AbstractCegarLoop]: Abstraction has 454959 states and 623256 transitions. [2023-12-21 13:49:41,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.521739130434783) internal successors, (219), 22 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:49:41,545 INFO L276 IsEmpty]: Start isEmpty. Operand 454959 states and 623256 transitions. [2023-12-21 13:49:41,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:49:41,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:49:41,555 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:49:41,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 13:49:41,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 13:49:41,757 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:49:41,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:49:41,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1845242269, now seen corresponding path program 1 times [2023-12-21 13:49:41,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:49:41,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511688353] [2023-12-21 13:49:41,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:49:41,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:49:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:49:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:49:41,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:49:41,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511688353] [2023-12-21 13:49:41,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511688353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:49:41,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:49:41,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:49:41,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680650203] [2023-12-21 13:49:41,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:49:41,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:49:41,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:49:41,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:49:41,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:49:41,796 INFO L87 Difference]: Start difference. First operand 454959 states and 623256 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:49:44,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:49:44,441 INFO L93 Difference]: Finished difference Result 835787 states and 1146793 transitions. [2023-12-21 13:49:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:49:44,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-21 13:49:44,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:49:45,166 INFO L225 Difference]: With dead ends: 835787 [2023-12-21 13:49:45,166 INFO L226 Difference]: Without dead ends: 380855 [2023-12-21 13:49:45,656 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 [2023-12-21 13:49:45,667 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 60 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:49:45,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 117 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:49:45,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380855 states. [2023-12-21 13:49:49,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380855 to 380855. [2023-12-21 13:49:50,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380855 states, 380854 states have (on average 1.355293629579839) internal successors, (516169), 380854 states have internal predecessors, (516169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:49:51,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380855 states to 380855 states and 516169 transitions. [2023-12-21 13:49:51,388 INFO L78 Accepts]: Start accepts. Automaton has 380855 states and 516169 transitions. Word has length 78 [2023-12-21 13:49:51,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:49:51,388 INFO L495 AbstractCegarLoop]: Abstraction has 380855 states and 516169 transitions. [2023-12-21 13:49:51,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:49:51,388 INFO L276 IsEmpty]: Start isEmpty. Operand 380855 states and 516169 transitions. [2023-12-21 13:49:51,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:49:51,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:49:51,408 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:49:51,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:49:51,409 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:49:51,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:49:51,428 INFO L85 PathProgramCache]: Analyzing trace with hash 803612341, now seen corresponding path program 1 times [2023-12-21 13:49:51,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:49:51,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014599641] [2023-12-21 13:49:51,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:49:51,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:49:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:49:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:49:51,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:49:51,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014599641] [2023-12-21 13:49:51,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014599641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:49:51,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:49:51,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:49:51,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612811628] [2023-12-21 13:49:51,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:49:51,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:49:51,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:49:51,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:49:51,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:49:51,920 INFO L87 Difference]: Start difference. First operand 380855 states and 516169 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:49:54,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:49:54,311 INFO L93 Difference]: Finished difference Result 749005 states and 1015828 transitions. [2023-12-21 13:49:54,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:49:54,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-21 13:49:54,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:49:54,860 INFO L225 Difference]: With dead ends: 749005 [2023-12-21 13:49:54,860 INFO L226 Difference]: Without dead ends: 368177 [2023-12-21 13:49:55,074 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 [2023-12-21 13:49:55,075 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 46 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:49:55,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 218 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:49:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368177 states. [2023-12-21 13:49:58,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368177 to 361815. [2023-12-21 13:49:59,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361815 states, 361814 states have (on average 1.3330744526193017) internal successors, (482325), 361814 states have internal predecessors, (482325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:49:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361815 states to 361815 states and 482325 transitions. [2023-12-21 13:49:59,910 INFO L78 Accepts]: Start accepts. Automaton has 361815 states and 482325 transitions. Word has length 78 [2023-12-21 13:49:59,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:49:59,910 INFO L495 AbstractCegarLoop]: Abstraction has 361815 states and 482325 transitions. [2023-12-21 13:49:59,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:49:59,910 INFO L276 IsEmpty]: Start isEmpty. Operand 361815 states and 482325 transitions. [2023-12-21 13:49:59,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:49:59,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:49:59,914 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:49:59,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:49:59,914 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:49:59,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:49:59,915 INFO L85 PathProgramCache]: Analyzing trace with hash -629012555, now seen corresponding path program 1 times [2023-12-21 13:49:59,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:49:59,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552757514] [2023-12-21 13:49:59,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:49:59,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:49:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:50:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:50:00,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:50:00,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552757514] [2023-12-21 13:50:00,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552757514] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:50:00,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381132207] [2023-12-21 13:50:00,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:50:00,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:50:00,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:50:00,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:50:00,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 13:50:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:50:00,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 13:50:00,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:50:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:50:00,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:50:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:50:01,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381132207] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:50:01,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:50:01,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-12-21 13:50:01,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869724259] [2023-12-21 13:50:01,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:50:01,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 13:50:01,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:50:01,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 13:50:01,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-12-21 13:50:01,237 INFO L87 Difference]: Start difference. First operand 361815 states and 482325 transitions. Second operand has 19 states, 19 states have (on average 9.31578947368421) internal successors, (177), 18 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:50:08,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:50:08,758 INFO L93 Difference]: Finished difference Result 2275235 states and 3001989 transitions. [2023-12-21 13:50:08,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 13:50:08,758 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.31578947368421) internal successors, (177), 18 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-21 13:50:08,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:50:13,485 INFO L225 Difference]: With dead ends: 2275235 [2023-12-21 13:50:13,486 INFO L226 Difference]: Without dead ends: 1913447 [2023-12-21 13:50:14,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=644, Invalid=2008, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 13:50:14,123 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 2180 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:50:14,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 1040 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:50:15,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913447 states. [2023-12-21 13:50:27,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913447 to 756097. [2023-12-21 13:50:28,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756097 states, 756096 states have (on average 1.3220807939732522) internal successors, (999620), 756096 states have internal predecessors, (999620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:50:30,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756097 states to 756097 states and 999620 transitions. [2023-12-21 13:50:30,437 INFO L78 Accepts]: Start accepts. Automaton has 756097 states and 999620 transitions. Word has length 78 [2023-12-21 13:50:30,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:50:30,437 INFO L495 AbstractCegarLoop]: Abstraction has 756097 states and 999620 transitions. [2023-12-21 13:50:30,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.31578947368421) internal successors, (177), 18 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:50:30,437 INFO L276 IsEmpty]: Start isEmpty. Operand 756097 states and 999620 transitions. [2023-12-21 13:50:30,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 13:50:30,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:50:30,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:50:30,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 13:50:30,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:50:30,669 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:50:30,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:50:30,669 INFO L85 PathProgramCache]: Analyzing trace with hash 570771013, now seen corresponding path program 1 times [2023-12-21 13:50:30,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:50:30,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7043253] [2023-12-21 13:50:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:50:30,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:50:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:50:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:50:30,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:50:30,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7043253] [2023-12-21 13:50:30,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7043253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:50:30,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:50:30,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:50:30,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502843138] [2023-12-21 13:50:30,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:50:30,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:50:30,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:50:30,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:50:30,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:50:30,728 INFO L87 Difference]: Start difference. First operand 756097 states and 999620 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:50:35,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:50:35,206 INFO L93 Difference]: Finished difference Result 1171137 states and 1546732 transitions. [2023-12-21 13:50:35,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:50:35,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-21 13:50:35,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:50:35,888 INFO L225 Difference]: With dead ends: 1171137 [2023-12-21 13:50:35,888 INFO L226 Difference]: Without dead ends: 415067 [2023-12-21 13:50:36,114 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 [2023-12-21 13:50:36,115 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 40 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:50:36,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 203 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:50:36,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415067 states. [2023-12-21 13:50:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415067 to 415065. [2023-12-21 13:50:40,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415065 states, 415064 states have (on average 1.2978480427114854) internal successors, (538690), 415064 states have internal predecessors, (538690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:50:41,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415065 states to 415065 states and 538690 transitions. [2023-12-21 13:50:41,396 INFO L78 Accepts]: Start accepts. Automaton has 415065 states and 538690 transitions. Word has length 79 [2023-12-21 13:50:41,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:50:41,396 INFO L495 AbstractCegarLoop]: Abstraction has 415065 states and 538690 transitions. [2023-12-21 13:50:41,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:50:41,396 INFO L276 IsEmpty]: Start isEmpty. Operand 415065 states and 538690 transitions. [2023-12-21 13:50:41,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 13:50:41,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:50:41,410 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:50:41,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:50:41,410 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:50:41,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:50:41,410 INFO L85 PathProgramCache]: Analyzing trace with hash 856511458, now seen corresponding path program 1 times [2023-12-21 13:50:41,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:50:41,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156883697] [2023-12-21 13:50:41,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:50:41,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:50:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:50:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:50:41,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:50:41,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156883697] [2023-12-21 13:50:41,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156883697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:50:41,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:50:41,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:50:41,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787823783] [2023-12-21 13:50:41,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:50:41,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:50:41,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:50:41,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:50:41,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:50:41,502 INFO L87 Difference]: Start difference. First operand 415065 states and 538690 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:50:43,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:50:43,270 INFO L93 Difference]: Finished difference Result 627905 states and 811986 transitions. [2023-12-21 13:50:43,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:50:43,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-21 13:50:43,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:50:43,561 INFO L225 Difference]: With dead ends: 627905 [2023-12-21 13:50:43,561 INFO L226 Difference]: Without dead ends: 212867 [2023-12-21 13:50:43,961 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 [2023-12-21 13:50:43,968 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 32 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:50:43,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 189 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:50:44,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212867 states. [2023-12-21 13:50:45,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212867 to 212865. [2023-12-21 13:50:46,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212865 states, 212864 states have (on average 1.269138980757667) internal successors, (270154), 212864 states have internal predecessors, (270154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:50:46,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212865 states to 212865 states and 270154 transitions. [2023-12-21 13:50:46,289 INFO L78 Accepts]: Start accepts. Automaton has 212865 states and 270154 transitions. Word has length 79 [2023-12-21 13:50:46,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:50:46,289 INFO L495 AbstractCegarLoop]: Abstraction has 212865 states and 270154 transitions. [2023-12-21 13:50:46,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:50:46,289 INFO L276 IsEmpty]: Start isEmpty. Operand 212865 states and 270154 transitions. [2023-12-21 13:50:46,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 13:50:46,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:50:46,300 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:50:46,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:50:46,301 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:50:46,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:50:46,302 INFO L85 PathProgramCache]: Analyzing trace with hash 417784290, now seen corresponding path program 1 times [2023-12-21 13:50:46,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:50:46,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664220328] [2023-12-21 13:50:46,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:50:46,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:50:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:50:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:50:47,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:50:47,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664220328] [2023-12-21 13:50:47,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664220328] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:50:47,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622599204] [2023-12-21 13:50:47,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:50:47,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:50:47,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:50:47,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:50:47,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 13:50:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:50:47,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 13:50:47,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:50:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:50:48,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:50:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:50:48,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622599204] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:50:48,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:50:48,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 30 [2023-12-21 13:50:48,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913866149] [2023-12-21 13:50:48,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:50:48,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 13:50:48,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:50:48,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 13:50:48,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2023-12-21 13:50:48,793 INFO L87 Difference]: Start difference. First operand 212865 states and 270154 transitions. Second operand has 31 states, 31 states have (on average 6.741935483870968) internal successors, (209), 30 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:50:52,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:50:52,768 INFO L93 Difference]: Finished difference Result 627703 states and 801441 transitions. [2023-12-21 13:50:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-21 13:50:52,769 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.741935483870968) internal successors, (209), 30 states have internal predecessors, (209), 0 states have call successors, (0), 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 79 [2023-12-21 13:50:52,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:50:53,814 INFO L225 Difference]: With dead ends: 627703 [2023-12-21 13:50:53,814 INFO L226 Difference]: Without dead ends: 547141 [2023-12-21 13:50:53,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 963 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1072, Invalid=3758, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 13:50:53,926 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 4030 mSDsluCounter, 3109 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4030 SdHoareTripleChecker+Valid, 3344 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:50:53,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4030 Valid, 3344 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:50:54,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547141 states. [2023-12-21 13:50:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547141 to 217089. [2023-12-21 13:50:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217089 states, 217088 states have (on average 1.2736309699292452) internal successors, (276490), 217088 states have internal predecessors, (276490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:50:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217089 states to 217089 states and 276490 transitions. [2023-12-21 13:50:57,694 INFO L78 Accepts]: Start accepts. Automaton has 217089 states and 276490 transitions. Word has length 79 [2023-12-21 13:50:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:50:57,694 INFO L495 AbstractCegarLoop]: Abstraction has 217089 states and 276490 transitions. [2023-12-21 13:50:57,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.741935483870968) internal successors, (209), 30 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:50:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 217089 states and 276490 transitions. [2023-12-21 13:50:57,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 13:50:57,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:50:57,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:50:57,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 13:50:57,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:50:57,901 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:50:57,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:50:57,902 INFO L85 PathProgramCache]: Analyzing trace with hash -861069883, now seen corresponding path program 1 times [2023-12-21 13:50:57,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:50:57,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692403340] [2023-12-21 13:50:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:50:57,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:50:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:50:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:50:58,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:50:58,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692403340] [2023-12-21 13:50:58,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692403340] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:50:58,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174552374] [2023-12-21 13:50:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:50:58,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:50:58,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:50:58,748 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:50:58,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 13:50:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:50:58,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 13:50:58,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:51:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:51:01,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:51:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:51:03,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174552374] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:51:03,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:51:03,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 25, 25] total 57 [2023-12-21 13:51:03,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86059312] [2023-12-21 13:51:03,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:51:03,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-21 13:51:03,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:51:03,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-21 13:51:03,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=2793, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 13:51:03,767 INFO L87 Difference]: Start difference. First operand 217089 states and 276490 transitions. Second operand has 57 states, 57 states have (on average 3.8421052631578947) internal successors, (219), 57 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:51:53,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:51:53,563 INFO L93 Difference]: Finished difference Result 586283 states and 722729 transitions. [2023-12-21 13:51:53,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 328 states. [2023-12-21 13:51:53,567 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.8421052631578947) internal successors, (219), 57 states have internal predecessors, (219), 0 states have call successors, (0), 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 79 [2023-12-21 13:51:53,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:51:54,206 INFO L225 Difference]: With dead ends: 586283 [2023-12-21 13:51:54,206 INFO L226 Difference]: Without dead ends: 472451 [2023-12-21 13:51:54,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 381 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59368 ImplicationChecksByTransitivity, 45.8s TimeCoverageRelationStatistics Valid=19921, Invalid=126385, Unknown=0, NotChecked=0, Total=146306 [2023-12-21 13:51:54,369 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 8372 mSDsluCounter, 11641 mSDsCounter, 0 mSdLazyCounter, 7071 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8372 SdHoareTripleChecker+Valid, 12192 SdHoareTripleChecker+Invalid, 7164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 7071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:51:54,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8372 Valid, 12192 Invalid, 7164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 7071 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-21 13:51:54,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472451 states. [2023-12-21 13:51:58,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472451 to 233899. [2023-12-21 13:51:58,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233899 states, 233898 states have (on average 1.2734439798544666) internal successors, (297856), 233898 states have internal predecessors, (297856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:51:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233899 states to 233899 states and 297856 transitions. [2023-12-21 13:51:59,228 INFO L78 Accepts]: Start accepts. Automaton has 233899 states and 297856 transitions. Word has length 79 [2023-12-21 13:51:59,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:51:59,228 INFO L495 AbstractCegarLoop]: Abstraction has 233899 states and 297856 transitions. [2023-12-21 13:51:59,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.8421052631578947) internal successors, (219), 57 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:51:59,228 INFO L276 IsEmpty]: Start isEmpty. Operand 233899 states and 297856 transitions. [2023-12-21 13:51:59,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 13:51:59,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:51:59,234 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:51:59,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 13:51:59,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-21 13:51:59,442 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:51:59,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:51:59,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1030464881, now seen corresponding path program 1 times [2023-12-21 13:51:59,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:51:59,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756007829] [2023-12-21 13:51:59,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:51:59,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:51:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:51:59,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:51:59,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:51:59,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756007829] [2023-12-21 13:51:59,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756007829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:51:59,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:51:59,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:51:59,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344806916] [2023-12-21 13:51:59,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:51:59,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:51:59,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:51:59,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:51:59,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:51:59,491 INFO L87 Difference]: Start difference. First operand 233899 states and 297856 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:00,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:52:00,438 INFO L93 Difference]: Finished difference Result 383825 states and 488766 transitions. [2023-12-21 13:52:00,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:52:00,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-21 13:52:00,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:52:00,624 INFO L225 Difference]: With dead ends: 383825 [2023-12-21 13:52:00,625 INFO L226 Difference]: Without dead ends: 149953 [2023-12-21 13:52:00,712 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 [2023-12-21 13:52:00,714 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 52 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:52:00,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 105 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:52:00,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149953 states. [2023-12-21 13:52:02,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149953 to 149953. [2023-12-21 13:52:02,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149953 states, 149952 states have (on average 1.257722471190781) internal successors, (188598), 149952 states have internal predecessors, (188598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:02,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149953 states to 149953 states and 188598 transitions. [2023-12-21 13:52:02,456 INFO L78 Accepts]: Start accepts. Automaton has 149953 states and 188598 transitions. Word has length 79 [2023-12-21 13:52:02,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:52:02,456 INFO L495 AbstractCegarLoop]: Abstraction has 149953 states and 188598 transitions. [2023-12-21 13:52:02,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:02,456 INFO L276 IsEmpty]: Start isEmpty. Operand 149953 states and 188598 transitions. [2023-12-21 13:52:02,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 13:52:02,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:52:02,457 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:52:02,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 13:52:02,458 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:52:02,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:52:02,458 INFO L85 PathProgramCache]: Analyzing trace with hash 485045842, now seen corresponding path program 1 times [2023-12-21 13:52:02,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:52:02,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707146367] [2023-12-21 13:52:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:02,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:52:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:03,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:52:03,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707146367] [2023-12-21 13:52:03,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707146367] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:52:03,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068827492] [2023-12-21 13:52:03,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:03,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:52:03,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:52:03,513 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:52:03,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 13:52:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:03,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 13:52:03,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:52:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:04,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:52:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:05,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068827492] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:52:05,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:52:05,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 11, 11] total 46 [2023-12-21 13:52:05,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447448649] [2023-12-21 13:52:05,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:52:05,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-21 13:52:05,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:52:05,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-21 13:52:05,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1930, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 13:52:05,028 INFO L87 Difference]: Start difference. First operand 149953 states and 188598 transitions. Second operand has 46 states, 46 states have (on average 4.6521739130434785) internal successors, (214), 46 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:18,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:52:18,653 INFO L93 Difference]: Finished difference Result 438031 states and 552514 transitions. [2023-12-21 13:52:18,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2023-12-21 13:52:18,654 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.6521739130434785) internal successors, (214), 46 states have internal predecessors, (214), 0 states have call successors, (0), 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 80 [2023-12-21 13:52:18,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:52:19,081 INFO L225 Difference]: With dead ends: 438031 [2023-12-21 13:52:19,081 INFO L226 Difference]: Without dead ends: 363312 [2023-12-21 13:52:19,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9453 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=5599, Invalid=26981, Unknown=0, NotChecked=0, Total=32580 [2023-12-21 13:52:19,137 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 5770 mSDsluCounter, 12998 mSDsCounter, 0 mSdLazyCounter, 5617 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5770 SdHoareTripleChecker+Valid, 13525 SdHoareTripleChecker+Invalid, 5621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:52:19,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5770 Valid, 13525 Invalid, 5621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5617 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-21 13:52:19,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363312 states. [2023-12-21 13:52:21,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363312 to 152681. [2023-12-21 13:52:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152681 states, 152680 states have (on average 1.260872412889704) internal successors, (192510), 152680 states have internal predecessors, (192510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152681 states to 152681 states and 192510 transitions. [2023-12-21 13:52:22,044 INFO L78 Accepts]: Start accepts. Automaton has 152681 states and 192510 transitions. Word has length 80 [2023-12-21 13:52:22,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:52:22,045 INFO L495 AbstractCegarLoop]: Abstraction has 152681 states and 192510 transitions. [2023-12-21 13:52:22,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.6521739130434785) internal successors, (214), 46 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:22,045 INFO L276 IsEmpty]: Start isEmpty. Operand 152681 states and 192510 transitions. [2023-12-21 13:52:22,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 13:52:22,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:52:22,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:52:22,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-21 13:52:22,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-21 13:52:22,247 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:52:22,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:52:22,247 INFO L85 PathProgramCache]: Analyzing trace with hash 757033593, now seen corresponding path program 1 times [2023-12-21 13:52:22,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:52:22,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185749312] [2023-12-21 13:52:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:22,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:52:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 13:52:22,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:52:22,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185749312] [2023-12-21 13:52:22,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185749312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:52:22,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:52:22,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:52:22,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504248425] [2023-12-21 13:52:22,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:52:22,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:52:22,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:52:22,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:52:22,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:52:22,272 INFO L87 Difference]: Start difference. First operand 152681 states and 192510 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:23,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:52:23,132 INFO L93 Difference]: Finished difference Result 279713 states and 353317 transitions. [2023-12-21 13:52:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:52:23,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 80 [2023-12-21 13:52:23,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:52:23,293 INFO L225 Difference]: With dead ends: 279713 [2023-12-21 13:52:23,293 INFO L226 Difference]: Without dead ends: 127059 [2023-12-21 13:52:23,348 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 [2023-12-21 13:52:23,349 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 67 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:52:23,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 138 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:52:23,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127059 states. [2023-12-21 13:52:24,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127059 to 127059. [2023-12-21 13:52:24,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127059 states, 127058 states have (on average 1.2483590171417778) internal successors, (158614), 127058 states have internal predecessors, (158614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:24,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127059 states to 127059 states and 158614 transitions. [2023-12-21 13:52:24,937 INFO L78 Accepts]: Start accepts. Automaton has 127059 states and 158614 transitions. Word has length 80 [2023-12-21 13:52:24,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:52:24,937 INFO L495 AbstractCegarLoop]: Abstraction has 127059 states and 158614 transitions. [2023-12-21 13:52:24,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:24,937 INFO L276 IsEmpty]: Start isEmpty. Operand 127059 states and 158614 transitions. [2023-12-21 13:52:24,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 13:52:24,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:52:24,938 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:52:24,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 13:52:24,939 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:52:24,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:52:24,939 INFO L85 PathProgramCache]: Analyzing trace with hash -345808623, now seen corresponding path program 1 times [2023-12-21 13:52:24,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:52:24,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437002119] [2023-12-21 13:52:24,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:24,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:52:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:52:24,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:52:24,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437002119] [2023-12-21 13:52:24,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437002119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:52:24,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:52:24,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:52:24,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234732993] [2023-12-21 13:52:24,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:52:24,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:52:24,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:52:24,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:52:24,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:52:24,967 INFO L87 Difference]: Start difference. First operand 127059 states and 158614 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:25,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:52:25,802 INFO L93 Difference]: Finished difference Result 242029 states and 301895 transitions. [2023-12-21 13:52:25,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:52:25,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-12-21 13:52:25,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:52:26,073 INFO L225 Difference]: With dead ends: 242029 [2023-12-21 13:52:26,073 INFO L226 Difference]: Without dead ends: 114997 [2023-12-21 13:52:26,167 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 [2023-12-21 13:52:26,167 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 51 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:52:26,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 91 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:52:26,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114997 states. [2023-12-21 13:52:27,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114997 to 114997. [2023-12-21 13:52:27,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114997 states, 114996 states have (on average 1.2303645344185885) internal successors, (141487), 114996 states have internal predecessors, (141487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:27,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114997 states to 114997 states and 141487 transitions. [2023-12-21 13:52:27,440 INFO L78 Accepts]: Start accepts. Automaton has 114997 states and 141487 transitions. Word has length 81 [2023-12-21 13:52:27,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:52:27,441 INFO L495 AbstractCegarLoop]: Abstraction has 114997 states and 141487 transitions. [2023-12-21 13:52:27,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:27,441 INFO L276 IsEmpty]: Start isEmpty. Operand 114997 states and 141487 transitions. [2023-12-21 13:52:27,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-21 13:52:27,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:52:27,443 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:52:27,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 13:52:27,443 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:52:27,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:52:27,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1221725054, now seen corresponding path program 1 times [2023-12-21 13:52:27,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:52:27,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471395126] [2023-12-21 13:52:27,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:27,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:52:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:27,564 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 33 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:27,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:52:27,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471395126] [2023-12-21 13:52:27,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471395126] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:52:27,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492699755] [2023-12-21 13:52:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:27,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:52:27,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:52:27,566 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:52:27,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 13:52:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:27,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:52:27,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:52:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 33 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:27,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:52:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 33 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:27,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492699755] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:52:27,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:52:27,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-21 13:52:27,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462641979] [2023-12-21 13:52:27,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:52:27,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 13:52:27,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:52:27,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 13:52:27,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:52:27,985 INFO L87 Difference]: Start difference. First operand 114997 states and 141487 transitions. Second operand has 11 states, 11 states have (on average 17.181818181818183) internal successors, (189), 10 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:28,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:52:28,627 INFO L93 Difference]: Finished difference Result 197805 states and 244814 transitions. [2023-12-21 13:52:28,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:52:28,628 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.181818181818183) internal successors, (189), 10 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-21 13:52:28,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:52:28,760 INFO L225 Difference]: With dead ends: 197805 [2023-12-21 13:52:28,761 INFO L226 Difference]: Without dead ends: 117604 [2023-12-21 13:52:28,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 204 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:52:28,812 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 515 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:52:28,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 307 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:52:28,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117604 states. [2023-12-21 13:52:29,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117604 to 109438. [2023-12-21 13:52:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109438 states, 109437 states have (on average 1.2232974222612096) internal successors, (133874), 109437 states have internal predecessors, (133874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:30,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109438 states to 109438 states and 133874 transitions. [2023-12-21 13:52:30,069 INFO L78 Accepts]: Start accepts. Automaton has 109438 states and 133874 transitions. Word has length 107 [2023-12-21 13:52:30,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:52:30,069 INFO L495 AbstractCegarLoop]: Abstraction has 109438 states and 133874 transitions. [2023-12-21 13:52:30,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.181818181818183) internal successors, (189), 10 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:30,069 INFO L276 IsEmpty]: Start isEmpty. Operand 109438 states and 133874 transitions. [2023-12-21 13:52:30,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 13:52:30,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:52:30,076 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:52:30,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-21 13:52:30,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:52:30,281 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:52:30,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:52:30,281 INFO L85 PathProgramCache]: Analyzing trace with hash 374410013, now seen corresponding path program 1 times [2023-12-21 13:52:30,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:52:30,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571606642] [2023-12-21 13:52:30,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:30,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:52:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 13:52:30,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:52:30,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571606642] [2023-12-21 13:52:30,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571606642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:52:30,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:52:30,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:52:30,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793791674] [2023-12-21 13:52:30,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:52:30,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:52:30,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:52:30,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:52:30,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:52:30,342 INFO L87 Difference]: Start difference. First operand 109438 states and 133874 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:30,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:52:30,795 INFO L93 Difference]: Finished difference Result 136743 states and 167469 transitions. [2023-12-21 13:52:30,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:52:30,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 131 [2023-12-21 13:52:30,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:52:30,838 INFO L225 Difference]: With dead ends: 136743 [2023-12-21 13:52:30,839 INFO L226 Difference]: Without dead ends: 27332 [2023-12-21 13:52:30,862 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 [2023-12-21 13:52:30,863 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 17 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:52:30,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 173 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:52:30,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27332 states. [2023-12-21 13:52:31,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27332 to 26750. [2023-12-21 13:52:31,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26750 states, 26749 states have (on average 1.2146996149388762) internal successors, (32492), 26749 states have internal predecessors, (32492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:31,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26750 states to 26750 states and 32492 transitions. [2023-12-21 13:52:31,069 INFO L78 Accepts]: Start accepts. Automaton has 26750 states and 32492 transitions. Word has length 131 [2023-12-21 13:52:31,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:52:31,069 INFO L495 AbstractCegarLoop]: Abstraction has 26750 states and 32492 transitions. [2023-12-21 13:52:31,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:31,070 INFO L276 IsEmpty]: Start isEmpty. Operand 26750 states and 32492 transitions. [2023-12-21 13:52:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 13:52:31,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:52:31,073 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:52:31,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 13:52:31,073 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:52:31,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:52:31,073 INFO L85 PathProgramCache]: Analyzing trace with hash 233226853, now seen corresponding path program 1 times [2023-12-21 13:52:31,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:52:31,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26156579] [2023-12-21 13:52:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:31,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:52:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 13:52:31,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:52:31,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26156579] [2023-12-21 13:52:31,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26156579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:52:31,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:52:31,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:52:31,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59881765] [2023-12-21 13:52:31,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:52:31,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:52:31,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:52:31,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:52:31,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:52:31,121 INFO L87 Difference]: Start difference. First operand 26750 states and 32492 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:31,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:52:31,460 INFO L93 Difference]: Finished difference Result 56266 states and 69012 transitions. [2023-12-21 13:52:31,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:52:31,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 132 [2023-12-21 13:52:31,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:52:31,488 INFO L225 Difference]: With dead ends: 56266 [2023-12-21 13:52:31,488 INFO L226 Difference]: Without dead ends: 31582 [2023-12-21 13:52:31,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:52:31,499 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 97 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:52:31,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 165 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:52:31,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31582 states. [2023-12-21 13:52:31,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31582 to 13170. [2023-12-21 13:52:31,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13170 states, 13169 states have (on average 1.2081403295618498) internal successors, (15910), 13169 states have internal predecessors, (15910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13170 states to 13170 states and 15910 transitions. [2023-12-21 13:52:31,665 INFO L78 Accepts]: Start accepts. Automaton has 13170 states and 15910 transitions. Word has length 132 [2023-12-21 13:52:31,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:52:31,665 INFO L495 AbstractCegarLoop]: Abstraction has 13170 states and 15910 transitions. [2023-12-21 13:52:31,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:31,665 INFO L276 IsEmpty]: Start isEmpty. Operand 13170 states and 15910 transitions. [2023-12-21 13:52:31,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 13:52:31,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:52:31,667 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:52:31,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 13:52:31,667 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:52:31,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:52:31,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1369242870, now seen corresponding path program 1 times [2023-12-21 13:52:31,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:52:31,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282501379] [2023-12-21 13:52:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:31,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:52:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:32,166 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 30 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:32,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:52:32,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282501379] [2023-12-21 13:52:32,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282501379] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:52:32,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026418884] [2023-12-21 13:52:32,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:32,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:52:32,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:52:32,173 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:52:32,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 13:52:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:32,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 13:52:32,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:52:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 32 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:33,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:52:34,689 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 30 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:34,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026418884] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:52:34,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:52:34,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2023-12-21 13:52:34,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478922190] [2023-12-21 13:52:34,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:52:34,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 13:52:34,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:52:34,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 13:52:34,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:52:34,690 INFO L87 Difference]: Start difference. First operand 13170 states and 15910 transitions. Second operand has 32 states, 32 states have (on average 10.375) internal successors, (332), 31 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:41,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:52:41,335 INFO L93 Difference]: Finished difference Result 86304 states and 105737 transitions. [2023-12-21 13:52:41,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-12-21 13:52:41,335 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.375) internal successors, (332), 31 states have internal predecessors, (332), 0 states have call successors, (0), 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 132 [2023-12-21 13:52:41,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:52:41,418 INFO L225 Difference]: With dead ends: 86304 [2023-12-21 13:52:41,418 INFO L226 Difference]: Without dead ends: 74874 [2023-12-21 13:52:41,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7287 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3711, Invalid=18341, Unknown=0, NotChecked=0, Total=22052 [2023-12-21 13:52:41,445 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 4847 mSDsluCounter, 3202 mSDsCounter, 0 mSdLazyCounter, 3554 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4847 SdHoareTripleChecker+Valid, 3489 SdHoareTripleChecker+Invalid, 3618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:52:41,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4847 Valid, 3489 Invalid, 3618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3554 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 13:52:41,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74874 states. [2023-12-21 13:52:41,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74874 to 19339. [2023-12-21 13:52:41,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19339 states, 19338 states have (on average 1.2026062674526838) internal successors, (23256), 19338 states have internal predecessors, (23256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:41,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19339 states to 19339 states and 23256 transitions. [2023-12-21 13:52:41,896 INFO L78 Accepts]: Start accepts. Automaton has 19339 states and 23256 transitions. Word has length 132 [2023-12-21 13:52:41,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:52:41,896 INFO L495 AbstractCegarLoop]: Abstraction has 19339 states and 23256 transitions. [2023-12-21 13:52:41,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.375) internal successors, (332), 31 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:41,897 INFO L276 IsEmpty]: Start isEmpty. Operand 19339 states and 23256 transitions. [2023-12-21 13:52:41,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 13:52:41,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:52:41,899 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:52:41,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-21 13:52:42,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-21 13:52:42,105 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:52:42,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:52:42,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1073197442, now seen corresponding path program 1 times [2023-12-21 13:52:42,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:52:42,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633995787] [2023-12-21 13:52:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:42,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:52:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:42,513 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 21 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:42,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:52:42,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633995787] [2023-12-21 13:52:42,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633995787] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:52:42,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063107668] [2023-12-21 13:52:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:42,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:52:42,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:52:42,525 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:52:42,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 13:52:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:42,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 13:52:42,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:52:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:43,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:52:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 21 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:44,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063107668] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:52:44,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:52:44,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-12-21 13:52:44,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307828804] [2023-12-21 13:52:44,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:52:44,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 13:52:44,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:52:44,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 13:52:44,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-12-21 13:52:44,516 INFO L87 Difference]: Start difference. First operand 19339 states and 23256 transitions. Second operand has 26 states, 26 states have (on average 12.076923076923077) internal successors, (314), 25 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:45,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:52:45,306 INFO L93 Difference]: Finished difference Result 31446 states and 37788 transitions. [2023-12-21 13:52:45,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 13:52:45,307 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.076923076923077) internal successors, (314), 25 states have internal predecessors, (314), 0 states have call successors, (0), 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 132 [2023-12-21 13:52:45,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:52:45,326 INFO L225 Difference]: With dead ends: 31446 [2023-12-21 13:52:45,326 INFO L226 Difference]: Without dead ends: 22554 [2023-12-21 13:52:45,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=400, Invalid=1160, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 13:52:45,338 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 1073 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:52:45,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 845 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:52:45,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22554 states. [2023-12-21 13:52:45,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22554 to 19339. [2023-12-21 13:52:45,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19339 states, 19338 states have (on average 1.1953666356396733) internal successors, (23116), 19338 states have internal predecessors, (23116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19339 states to 19339 states and 23116 transitions. [2023-12-21 13:52:45,489 INFO L78 Accepts]: Start accepts. Automaton has 19339 states and 23116 transitions. Word has length 132 [2023-12-21 13:52:45,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:52:45,494 INFO L495 AbstractCegarLoop]: Abstraction has 19339 states and 23116 transitions. [2023-12-21 13:52:45,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.076923076923077) internal successors, (314), 25 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:45,494 INFO L276 IsEmpty]: Start isEmpty. Operand 19339 states and 23116 transitions. [2023-12-21 13:52:45,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 13:52:45,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:52:45,496 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:52:45,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-21 13:52:45,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:52:45,698 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:52:45,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:52:45,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1388972682, now seen corresponding path program 1 times [2023-12-21 13:52:45,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:52:45,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917380203] [2023-12-21 13:52:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:45,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:52:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:46,037 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 13 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:46,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:52:46,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917380203] [2023-12-21 13:52:46,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917380203] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:52:46,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097937393] [2023-12-21 13:52:46,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:46,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:52:46,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:52:46,039 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:52:46,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 13:52:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:46,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 13:52:46,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:52:46,833 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 45 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:46,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:52:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 39 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:47,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097937393] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:52:47,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:52:47,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2023-12-21 13:52:47,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698173005] [2023-12-21 13:52:47,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:52:47,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 13:52:47,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:52:47,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 13:52:47,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 13:52:47,931 INFO L87 Difference]: Start difference. First operand 19339 states and 23116 transitions. Second operand has 33 states, 33 states have (on average 11.151515151515152) internal successors, (368), 32 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:52,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:52:52,157 INFO L93 Difference]: Finished difference Result 40949 states and 48446 transitions. [2023-12-21 13:52:52,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-21 13:52:52,158 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 11.151515151515152) internal successors, (368), 32 states have internal predecessors, (368), 0 states have call successors, (0), 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 132 [2023-12-21 13:52:52,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:52:52,184 INFO L225 Difference]: With dead ends: 40949 [2023-12-21 13:52:52,184 INFO L226 Difference]: Without dead ends: 25211 [2023-12-21 13:52:52,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1376, Invalid=4324, Unknown=0, NotChecked=0, Total=5700 [2023-12-21 13:52:52,197 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 3236 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3236 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:52:52,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3236 Valid, 1080 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:52:52,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25211 states. [2023-12-21 13:52:52,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25211 to 19109. [2023-12-21 13:52:52,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19109 states, 19108 states have (on average 1.17139418044798) internal successors, (22383), 19108 states have internal predecessors, (22383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:52,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19109 states to 19109 states and 22383 transitions. [2023-12-21 13:52:52,359 INFO L78 Accepts]: Start accepts. Automaton has 19109 states and 22383 transitions. Word has length 132 [2023-12-21 13:52:52,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:52:52,359 INFO L495 AbstractCegarLoop]: Abstraction has 19109 states and 22383 transitions. [2023-12-21 13:52:52,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.151515151515152) internal successors, (368), 32 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:52,360 INFO L276 IsEmpty]: Start isEmpty. Operand 19109 states and 22383 transitions. [2023-12-21 13:52:52,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 13:52:52,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:52:52,362 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:52:52,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-21 13:52:52,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-21 13:52:52,567 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:52:52,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:52:52,567 INFO L85 PathProgramCache]: Analyzing trace with hash -895708430, now seen corresponding path program 1 times [2023-12-21 13:52:52,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:52:52,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531361723] [2023-12-21 13:52:52,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:52,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:52:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:53,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:52:53,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531361723] [2023-12-21 13:52:53,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531361723] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:52:53,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685557582] [2023-12-21 13:52:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:53,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:52:53,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:52:53,157 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:52:53,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 13:52:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:53,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 13:52:53,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:52:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:54,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:52:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:56,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685557582] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:52:56,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:52:56,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 48 [2023-12-21 13:52:56,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559433035] [2023-12-21 13:52:56,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:52:56,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 13:52:56,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:52:56,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 13:52:56,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2063, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 13:52:56,050 INFO L87 Difference]: Start difference. First operand 19109 states and 22383 transitions. Second operand has 48 states, 48 states have (on average 7.604166666666667) internal successors, (365), 48 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:58,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:52:58,941 INFO L93 Difference]: Finished difference Result 41356 states and 48154 transitions. [2023-12-21 13:52:58,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-21 13:52:58,942 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 7.604166666666667) internal successors, (365), 48 states have internal predecessors, (365), 0 states have call successors, (0), 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 134 [2023-12-21 13:52:58,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:52:58,974 INFO L225 Difference]: With dead ends: 41356 [2023-12-21 13:52:58,975 INFO L226 Difference]: Without dead ends: 36261 [2023-12-21 13:52:58,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2496 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1217, Invalid=8289, Unknown=0, NotChecked=0, Total=9506 [2023-12-21 13:52:58,986 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 1627 mSDsluCounter, 8043 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 8405 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:52:58,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 8405 Invalid, 2216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 13:52:59,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36261 states. [2023-12-21 13:52:59,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36261 to 23294. [2023-12-21 13:52:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23294 states, 23293 states have (on average 1.1661443352080023) internal successors, (27163), 23293 states have internal predecessors, (27163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:59,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23294 states to 23294 states and 27163 transitions. [2023-12-21 13:52:59,201 INFO L78 Accepts]: Start accepts. Automaton has 23294 states and 27163 transitions. Word has length 134 [2023-12-21 13:52:59,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:52:59,202 INFO L495 AbstractCegarLoop]: Abstraction has 23294 states and 27163 transitions. [2023-12-21 13:52:59,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 7.604166666666667) internal successors, (365), 48 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:52:59,202 INFO L276 IsEmpty]: Start isEmpty. Operand 23294 states and 27163 transitions. [2023-12-21 13:52:59,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 13:52:59,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:52:59,204 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:52:59,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 13:52:59,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-21 13:52:59,409 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:52:59,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:52:59,409 INFO L85 PathProgramCache]: Analyzing trace with hash 2120404693, now seen corresponding path program 1 times [2023-12-21 13:52:59,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:52:59,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37108836] [2023-12-21 13:52:59,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:59,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:52:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 13 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:52:59,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:52:59,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37108836] [2023-12-21 13:52:59,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37108836] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:52:59,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331403584] [2023-12-21 13:52:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:52:59,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:52:59,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:52:59,869 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:52:59,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 13:52:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:52:59,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 13:52:59,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:53:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 13 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:53:01,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:53:03,338 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 13 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:53:03,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331403584] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:53:03,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:53:03,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 52 [2023-12-21 13:53:03,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663717103] [2023-12-21 13:53:03,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:53:03,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-21 13:53:03,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:53:03,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-21 13:53:03,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2428, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 13:53:03,340 INFO L87 Difference]: Start difference. First operand 23294 states and 27163 transitions. Second operand has 52 states, 52 states have (on average 7.288461538461538) internal successors, (379), 52 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:53:09,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:53:09,426 INFO L93 Difference]: Finished difference Result 75340 states and 86604 transitions. [2023-12-21 13:53:09,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-21 13:53:09,427 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 7.288461538461538) internal successors, (379), 52 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-21 13:53:09,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:53:09,497 INFO L225 Difference]: With dead ends: 75340 [2023-12-21 13:53:09,498 INFO L226 Difference]: Without dead ends: 66639 [2023-12-21 13:53:09,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3759 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1914, Invalid=11196, Unknown=0, NotChecked=0, Total=13110 [2023-12-21 13:53:09,516 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 2800 mSDsluCounter, 7235 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2800 SdHoareTripleChecker+Valid, 7605 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:53:09,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2800 Valid, 7605 Invalid, 1996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 13:53:09,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66639 states. [2023-12-21 13:53:09,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66639 to 29050. [2023-12-21 13:53:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29050 states, 29049 states have (on average 1.1590416193328514) internal successors, (33669), 29049 states have internal predecessors, (33669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:53:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29050 states to 29050 states and 33669 transitions. [2023-12-21 13:53:09,897 INFO L78 Accepts]: Start accepts. Automaton has 29050 states and 33669 transitions. Word has length 134 [2023-12-21 13:53:09,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:53:09,897 INFO L495 AbstractCegarLoop]: Abstraction has 29050 states and 33669 transitions. [2023-12-21 13:53:09,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 7.288461538461538) internal successors, (379), 52 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:53:09,897 INFO L276 IsEmpty]: Start isEmpty. Operand 29050 states and 33669 transitions. [2023-12-21 13:53:09,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 13:53:09,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:53:09,899 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:53:09,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-21 13:53:10,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-21 13:53:10,104 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:53:10,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:53:10,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2087115381, now seen corresponding path program 1 times [2023-12-21 13:53:10,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:53:10,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530934005] [2023-12-21 13:53:10,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:53:10,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:53:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:53:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:53:10,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:53:10,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530934005] [2023-12-21 13:53:10,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530934005] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:53:10,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685067826] [2023-12-21 13:53:10,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:53:10,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:53:10,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:53:10,941 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:53:10,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 13:53:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:53:11,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-21 13:53:11,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:53:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:53:15,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:53:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:53:19,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685067826] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:53:19,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:53:19,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 31] total 86 [2023-12-21 13:53:19,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214734956] [2023-12-21 13:53:19,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:53:19,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-21 13:53:19,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:53:19,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-21 13:53:19,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=6871, Unknown=0, NotChecked=0, Total=7310 [2023-12-21 13:53:19,303 INFO L87 Difference]: Start difference. First operand 29050 states and 33669 transitions. Second operand has 86 states, 86 states have (on average 4.290697674418604) internal successors, (369), 86 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:54:17,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:54:17,391 INFO L93 Difference]: Finished difference Result 86563 states and 100209 transitions. [2023-12-21 13:54:17,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 277 states. [2023-12-21 13:54:17,391 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 4.290697674418604) internal successors, (369), 86 states have internal predecessors, (369), 0 states have call successors, (0), 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 134 [2023-12-21 13:54:17,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:54:17,463 INFO L225 Difference]: With dead ends: 86563 [2023-12-21 13:54:17,463 INFO L226 Difference]: Without dead ends: 76185 [2023-12-21 13:54:17,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 357 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45163 ImplicationChecksByTransitivity, 53.3s TimeCoverageRelationStatistics Valid=11017, Invalid=117505, Unknown=0, NotChecked=0, Total=128522 [2023-12-21 13:54:17,489 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 7579 mSDsluCounter, 25503 mSDsCounter, 0 mSdLazyCounter, 9852 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7579 SdHoareTripleChecker+Valid, 26088 SdHoareTripleChecker+Invalid, 9921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 9852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:54:17,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7579 Valid, 26088 Invalid, 9921 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 9852 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-12-21 13:54:17,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76185 states. [2023-12-21 13:54:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76185 to 32881. [2023-12-21 13:54:17,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32881 states, 32880 states have (on average 1.1556873479318734) internal successors, (37999), 32880 states have internal predecessors, (37999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:54:17,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32881 states to 32881 states and 37999 transitions. [2023-12-21 13:54:17,927 INFO L78 Accepts]: Start accepts. Automaton has 32881 states and 37999 transitions. Word has length 134 [2023-12-21 13:54:17,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:54:17,927 INFO L495 AbstractCegarLoop]: Abstraction has 32881 states and 37999 transitions. [2023-12-21 13:54:17,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 4.290697674418604) internal successors, (369), 86 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:54:17,928 INFO L276 IsEmpty]: Start isEmpty. Operand 32881 states and 37999 transitions. [2023-12-21 13:54:17,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 13:54:17,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:54:17,930 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:54:17,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-21 13:54:18,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-21 13:54:18,135 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:54:18,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:54:18,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1062428690, now seen corresponding path program 1 times [2023-12-21 13:54:18,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:54:18,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269415940] [2023-12-21 13:54:18,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:54:18,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:54:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:54:19,501 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:54:19,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:54:19,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269415940] [2023-12-21 13:54:19,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269415940] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:54:19,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62271275] [2023-12-21 13:54:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:54:19,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:54:19,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:54:19,503 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:54:19,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 13:54:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:54:19,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-21 13:54:19,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:54:21,734 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 41 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:54:21,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:54:24,395 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 41 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:54:24,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62271275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:54:24,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:54:24,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 25, 22] total 75 [2023-12-21 13:54:24,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615283563] [2023-12-21 13:54:24,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:54:24,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-12-21 13:54:24,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:54:24,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-12-21 13:54:24,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=5256, Unknown=0, NotChecked=0, Total=5550 [2023-12-21 13:54:24,397 INFO L87 Difference]: Start difference. First operand 32881 states and 37999 transitions. Second operand has 75 states, 75 states have (on average 4.8933333333333335) internal successors, (367), 75 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)