/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/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:46:23,344 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:46:23,404 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 11:46:23,406 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:46:23,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:46:23,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:46:23,435 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:46:23,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:46:23,436 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:46:23,436 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:46:23,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:46:23,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:46:23,437 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:46:23,437 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:46:23,438 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:46:23,438 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:46:23,438 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:46:23,438 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:46:23,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:46:23,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:46:23,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:46:23,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:46:23,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:46:23,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:46:23,441 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:46:23,441 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:46:23,441 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:46:23,441 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:46:23,442 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:46:23,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:46:23,442 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:46:23,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:46:23,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:46:23,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:46:23,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:46:23,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:46:23,443 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:46:23,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:46:23,444 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:46:23,444 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:46:23,444 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:46:23,448 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:46:23,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:46:23,448 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:46:23,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:46:23,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:46:23,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:46:23,625 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:46:23,626 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:46:23,626 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c [2023-12-21 11:46:24,628 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:46:24,790 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:46:24,791 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c [2023-12-21 11:46:24,800 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/450ae9ed6/7a5b815fdeb94222a1dadfcd351f10da/FLAGfe5c19f24 [2023-12-21 11:46:24,809 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/450ae9ed6/7a5b815fdeb94222a1dadfcd351f10da [2023-12-21 11:46:24,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:46:24,812 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:46:24,813 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:46:24,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:46:24,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:46:24,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:46:24" (1/1) ... [2023-12-21 11:46:24,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120de6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:46:24, skipping insertion in model container [2023-12-21 11:46:24,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:46:24" (1/1) ... [2023-12-21 11:46:24,847 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:46:24,976 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c[8379,8392] [2023-12-21 11:46:24,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:46:24,985 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:46:25,022 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c[8379,8392] [2023-12-21 11:46:25,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:46:25,034 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:46:25,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:46:25 WrapperNode [2023-12-21 11:46:25,035 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:46:25,036 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:46:25,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:46:25,039 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:46:25,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:46:25" (1/1) ... [2023-12-21 11:46:25,049 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:46:25" (1/1) ... [2023-12-21 11:46:25,077 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 272 [2023-12-21 11:46:25,078 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:46:25,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:46:25,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:46:25,078 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:46:25,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:46:25" (1/1) ... [2023-12-21 11:46:25,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:46:25" (1/1) ... [2023-12-21 11:46:25,088 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:46:25" (1/1) ... [2023-12-21 11:46:25,108 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 11:46:25,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:46:25" (1/1) ... [2023-12-21 11:46:25,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:46:25" (1/1) ... [2023-12-21 11:46:25,118 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:46:25" (1/1) ... [2023-12-21 11:46:25,121 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:46:25" (1/1) ... [2023-12-21 11:46:25,122 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:46:25" (1/1) ... [2023-12-21 11:46:25,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:46:25" (1/1) ... [2023-12-21 11:46:25,125 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:46:25,125 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:46:25,125 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:46:25,125 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:46:25,126 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:46:25" (1/1) ... [2023-12-21 11:46:25,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:46:25,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:46:25,159 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 11:46:25,164 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 11:46:25,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:46:25,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:46:25,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:46:25,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:46:25,238 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:46:25,240 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:46:25,457 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:46:25,480 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:46:25,481 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 11:46:25,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:46:25 BoogieIcfgContainer [2023-12-21 11:46:25,481 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:46:25,482 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:46:25,483 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:46:25,484 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:46:25,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:46:24" (1/3) ... [2023-12-21 11:46:25,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fe8dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:46:25, skipping insertion in model container [2023-12-21 11:46:25,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:46:25" (2/3) ... [2023-12-21 11:46:25,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70fe8dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:46:25, skipping insertion in model container [2023-12-21 11:46:25,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:46:25" (3/3) ... [2023-12-21 11:46:25,486 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c [2023-12-21 11:46:25,497 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:46:25,497 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:46:25,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:46:25,529 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;@6a5b0ce8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:46:25,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:46:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 62 states have (on average 1.7903225806451613) internal successors, (111), 63 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:25,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 11:46:25,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:25,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:46:25,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:25,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:25,541 INFO L85 PathProgramCache]: Analyzing trace with hash -20322442, now seen corresponding path program 1 times [2023-12-21 11:46:25,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:25,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797590837] [2023-12-21 11:46:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:25,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:25,668 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 11:46:25,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:25,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797590837] [2023-12-21 11:46:25,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797590837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:25,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:25,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:46:25,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011355143] [2023-12-21 11:46:25,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:25,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 11:46:25,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:25,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 11:46:25,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:46:25,718 INFO L87 Difference]: Start difference. First operand has 64 states, 62 states have (on average 1.7903225806451613) internal successors, (111), 63 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 11:46:25,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:25,736 INFO L93 Difference]: Finished difference Result 100 states and 171 transitions. [2023-12-21 11:46:25,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 11:46:25,738 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-12-21 11:46:25,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:25,743 INFO L225 Difference]: With dead ends: 100 [2023-12-21 11:46:25,743 INFO L226 Difference]: Without dead ends: 62 [2023-12-21 11:46:25,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:46:25,747 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:25,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:46:25,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-21 11:46:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-21 11:46:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.7377049180327868) internal successors, (106), 61 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 11:46:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 106 transitions. [2023-12-21 11:46:25,768 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 106 transitions. Word has length 18 [2023-12-21 11:46:25,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:25,769 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 106 transitions. [2023-12-21 11:46:25,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 11:46:25,769 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 106 transitions. [2023-12-21 11:46:25,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 11:46:25,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:25,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:46:25,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:46:25,771 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:25,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:25,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1300186120, now seen corresponding path program 1 times [2023-12-21 11:46:25,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:25,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047999519] [2023-12-21 11:46:25,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:25,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:25,987 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 11:46:25,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:25,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047999519] [2023-12-21 11:46:25,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047999519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:25,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:25,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:46:25,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133071594] [2023-12-21 11:46:25,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:25,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:46:25,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:25,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:46:25,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:46:25,995 INFO L87 Difference]: Start difference. First operand 62 states and 106 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 11:46:26,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:26,060 INFO L93 Difference]: Finished difference Result 100 states and 165 transitions. [2023-12-21 11:46:26,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:46:26,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-12-21 11:46:26,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:26,062 INFO L225 Difference]: With dead ends: 100 [2023-12-21 11:46:26,062 INFO L226 Difference]: Without dead ends: 62 [2023-12-21 11:46:26,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:46:26,063 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:26,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 283 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:46:26,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-21 11:46:26,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-21 11:46:26,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.360655737704918) internal successors, (83), 61 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 11:46:26,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 83 transitions. [2023-12-21 11:46:26,068 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 83 transitions. Word has length 18 [2023-12-21 11:46:26,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:26,068 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 83 transitions. [2023-12-21 11:46:26,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 11:46:26,069 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 83 transitions. [2023-12-21 11:46:26,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 11:46:26,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:26,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:46:26,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:46:26,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:26,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:26,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1316975187, now seen corresponding path program 1 times [2023-12-21 11:46:26,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:26,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622346493] [2023-12-21 11:46:26,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:26,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:26,229 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 11:46:26,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:26,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622346493] [2023-12-21 11:46:26,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622346493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:26,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:26,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:46:26,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870302976] [2023-12-21 11:46:26,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:26,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:46:26,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:26,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:46:26,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:46:26,234 INFO L87 Difference]: Start difference. First operand 62 states and 83 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:26,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:26,375 INFO L93 Difference]: Finished difference Result 342 states and 531 transitions. [2023-12-21 11:46:26,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:46:26,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-21 11:46:26,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:26,377 INFO L225 Difference]: With dead ends: 342 [2023-12-21 11:46:26,377 INFO L226 Difference]: Without dead ends: 307 [2023-12-21 11:46:26,377 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 11:46:26,378 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 494 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:26,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 716 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:46:26,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-12-21 11:46:26,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 95. [2023-12-21 11:46:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.446808510638298) internal successors, (136), 94 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:26,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 136 transitions. [2023-12-21 11:46:26,388 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 136 transitions. Word has length 40 [2023-12-21 11:46:26,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:26,389 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 136 transitions. [2023-12-21 11:46:26,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:26,389 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 136 transitions. [2023-12-21 11:46:26,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 11:46:26,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:26,390 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] [2023-12-21 11:46:26,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:46:26,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:26,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:26,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2133064515, now seen corresponding path program 1 times [2023-12-21 11:46:26,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:26,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532769793] [2023-12-21 11:46:26,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:26,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:26,436 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 11:46:26,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:26,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532769793] [2023-12-21 11:46:26,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532769793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:26,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:26,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:46:26,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888650280] [2023-12-21 11:46:26,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:26,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:46:26,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:26,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:46:26,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:46:26,438 INFO L87 Difference]: Start difference. First operand 95 states and 136 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 11:46:26,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:26,454 INFO L93 Difference]: Finished difference Result 220 states and 335 transitions. [2023-12-21 11:46:26,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:46:26,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-12-21 11:46:26,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:26,455 INFO L225 Difference]: With dead ends: 220 [2023-12-21 11:46:26,455 INFO L226 Difference]: Without dead ends: 152 [2023-12-21 11:46:26,455 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 11:46:26,456 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 34 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:26,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 128 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:46:26,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-21 11:46:26,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2023-12-21 11:46:26,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.4899328859060403) internal successors, (222), 149 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 11:46:26,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 222 transitions. [2023-12-21 11:46:26,464 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 222 transitions. Word has length 42 [2023-12-21 11:46:26,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:26,464 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 222 transitions. [2023-12-21 11:46:26,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 11:46:26,464 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 222 transitions. [2023-12-21 11:46:26,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 11:46:26,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:26,465 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] [2023-12-21 11:46:26,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:46:26,466 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:26,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:26,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2135209467, now seen corresponding path program 1 times [2023-12-21 11:46:26,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:26,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471316045] [2023-12-21 11:46:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:26,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:26,599 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 11:46:26,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:26,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471316045] [2023-12-21 11:46:26,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471316045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:26,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:26,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:46:26,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683283900] [2023-12-21 11:46:26,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:26,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:46:26,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:26,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:46:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:46:26,601 INFO L87 Difference]: Start difference. First operand 150 states and 222 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 11:46:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:26,692 INFO L93 Difference]: Finished difference Result 275 states and 418 transitions. [2023-12-21 11:46:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:46:26,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-12-21 11:46:26,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:26,693 INFO L225 Difference]: With dead ends: 275 [2023-12-21 11:46:26,693 INFO L226 Difference]: Without dead ends: 152 [2023-12-21 11:46:26,693 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 11:46:26,694 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 88 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:26,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 230 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:46:26,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-21 11:46:26,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2023-12-21 11:46:26,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.476510067114094) internal successors, (220), 149 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:26,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 220 transitions. [2023-12-21 11:46:26,700 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 220 transitions. Word has length 42 [2023-12-21 11:46:26,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:26,700 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 220 transitions. [2023-12-21 11:46:26,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 11:46:26,700 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 220 transitions. [2023-12-21 11:46:26,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 11:46:26,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:26,701 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] [2023-12-21 11:46:26,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:46:26,701 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:26,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:26,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1752940221, now seen corresponding path program 1 times [2023-12-21 11:46:26,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:26,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028755026] [2023-12-21 11:46:26,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:26,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:26,866 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 11:46:26,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:26,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028755026] [2023-12-21 11:46:26,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028755026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:26,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:26,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:46:26,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731955280] [2023-12-21 11:46:26,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:26,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:46:26,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:26,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:46:26,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:46:26,868 INFO L87 Difference]: Start difference. First operand 150 states and 220 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 11:46:26,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:26,891 INFO L93 Difference]: Finished difference Result 158 states and 229 transitions. [2023-12-21 11:46:26,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:46:26,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-21 11:46:26,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:26,893 INFO L225 Difference]: With dead ends: 158 [2023-12-21 11:46:26,893 INFO L226 Difference]: Without dead ends: 156 [2023-12-21 11:46:26,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:46:26,895 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 2 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:26,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 380 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:46:26,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-21 11:46:26,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 154. [2023-12-21 11:46:26,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.457516339869281) internal successors, (223), 153 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 11:46:26,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 223 transitions. [2023-12-21 11:46:26,902 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 223 transitions. Word has length 43 [2023-12-21 11:46:26,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:26,902 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 223 transitions. [2023-12-21 11:46:26,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 11:46:26,902 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 223 transitions. [2023-12-21 11:46:26,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-21 11:46:26,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:26,903 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] [2023-12-21 11:46:26,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:46:26,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:26,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:26,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1574505819, now seen corresponding path program 1 times [2023-12-21 11:46:26,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:26,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821178133] [2023-12-21 11:46:26,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:26,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:26,929 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 11:46:26,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:26,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821178133] [2023-12-21 11:46:26,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821178133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:26,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:26,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:46:26,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374550742] [2023-12-21 11:46:26,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:26,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:46:26,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:26,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:46:26,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:46:26,931 INFO L87 Difference]: Start difference. First operand 154 states and 223 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 11:46:26,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:26,943 INFO L93 Difference]: Finished difference Result 292 states and 436 transitions. [2023-12-21 11:46:26,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:46:26,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-21 11:46:26,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:26,944 INFO L225 Difference]: With dead ends: 292 [2023-12-21 11:46:26,944 INFO L226 Difference]: Without dead ends: 220 [2023-12-21 11:46:26,944 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 11:46:26,945 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 46 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:26,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 176 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:46:26,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-21 11:46:26,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2023-12-21 11:46:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.4746543778801844) internal successors, (320), 217 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 11:46:26,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 320 transitions. [2023-12-21 11:46:26,950 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 320 transitions. Word has length 44 [2023-12-21 11:46:26,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:26,951 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 320 transitions. [2023-12-21 11:46:26,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 11:46:26,951 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 320 transitions. [2023-12-21 11:46:26,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-21 11:46:26,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:26,952 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] [2023-12-21 11:46:26,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:46:26,952 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:26,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:26,952 INFO L85 PathProgramCache]: Analyzing trace with hash 988793691, now seen corresponding path program 1 times [2023-12-21 11:46:26,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:26,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635063860] [2023-12-21 11:46:26,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:26,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:26,995 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 11:46:26,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:26,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635063860] [2023-12-21 11:46:26,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635063860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:26,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:26,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:46:26,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766929572] [2023-12-21 11:46:26,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:26,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:46:26,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:26,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:46:26,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:46:26,997 INFO L87 Difference]: Start difference. First operand 218 states and 320 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 11:46:27,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:27,018 INFO L93 Difference]: Finished difference Result 572 states and 860 transitions. [2023-12-21 11:46:27,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:46:27,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-21 11:46:27,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:27,019 INFO L225 Difference]: With dead ends: 572 [2023-12-21 11:46:27,019 INFO L226 Difference]: Without dead ends: 383 [2023-12-21 11:46:27,021 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 11:46:27,022 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 42 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:27,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 176 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:46:27,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-21 11:46:27,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 381. [2023-12-21 11:46:27,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.4789473684210526) internal successors, (562), 380 states have internal predecessors, (562), 0 states have call successors, (0), 0 states 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 11:46:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 562 transitions. [2023-12-21 11:46:27,038 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 562 transitions. Word has length 44 [2023-12-21 11:46:27,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:27,038 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 562 transitions. [2023-12-21 11:46:27,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 11:46:27,038 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 562 transitions. [2023-12-21 11:46:27,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-21 11:46:27,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:27,038 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] [2023-12-21 11:46:27,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:46:27,039 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:27,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:27,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1877527131, now seen corresponding path program 1 times [2023-12-21 11:46:27,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:27,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543006684] [2023-12-21 11:46:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:27,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:27,102 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 11:46:27,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:27,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543006684] [2023-12-21 11:46:27,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543006684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:27,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:27,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:46:27,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951053156] [2023-12-21 11:46:27,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:27,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:46:27,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:27,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:46:27,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:46:27,104 INFO L87 Difference]: Start difference. First operand 381 states and 562 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 11:46:27,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:27,127 INFO L93 Difference]: Finished difference Result 1037 states and 1544 transitions. [2023-12-21 11:46:27,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:46:27,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-21 11:46:27,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:27,130 INFO L225 Difference]: With dead ends: 1037 [2023-12-21 11:46:27,130 INFO L226 Difference]: Without dead ends: 685 [2023-12-21 11:46:27,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:46:27,133 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 40 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:27,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 178 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:46:27,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-12-21 11:46:27,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 683. [2023-12-21 11:46:27,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.4633431085043989) internal successors, (998), 682 states have internal predecessors, (998), 0 states have call successors, (0), 0 states 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 11:46:27,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 998 transitions. [2023-12-21 11:46:27,152 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 998 transitions. Word has length 44 [2023-12-21 11:46:27,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:27,152 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 998 transitions. [2023-12-21 11:46:27,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 11:46:27,152 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 998 transitions. [2023-12-21 11:46:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-21 11:46:27,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:27,153 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] [2023-12-21 11:46:27,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:46:27,153 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:27,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:27,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1614449755, now seen corresponding path program 1 times [2023-12-21 11:46:27,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:27,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173764074] [2023-12-21 11:46:27,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:27,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:27,187 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 11:46:27,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:27,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173764074] [2023-12-21 11:46:27,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173764074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:27,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:27,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:46:27,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800603158] [2023-12-21 11:46:27,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:27,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:46:27,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:27,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:46:27,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:46:27,189 INFO L87 Difference]: Start difference. First operand 683 states and 998 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 11:46:27,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:27,215 INFO L93 Difference]: Finished difference Result 1895 states and 2768 transitions. [2023-12-21 11:46:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:46:27,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-21 11:46:27,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:27,219 INFO L225 Difference]: With dead ends: 1895 [2023-12-21 11:46:27,219 INFO L226 Difference]: Without dead ends: 1241 [2023-12-21 11:46:27,220 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 11:46:27,220 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 44 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:27,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 182 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:46:27,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2023-12-21 11:46:27,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1239. [2023-12-21 11:46:27,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1238 states have (on average 1.432956381260097) internal successors, (1774), 1238 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states 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 11:46:27,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1774 transitions. [2023-12-21 11:46:27,246 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1774 transitions. Word has length 44 [2023-12-21 11:46:27,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:27,247 INFO L495 AbstractCegarLoop]: Abstraction has 1239 states and 1774 transitions. [2023-12-21 11:46:27,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 11:46:27,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1774 transitions. [2023-12-21 11:46:27,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 11:46:27,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:27,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:46:27,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:46:27,248 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:27,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:27,249 INFO L85 PathProgramCache]: Analyzing trace with hash -712030863, now seen corresponding path program 1 times [2023-12-21 11:46:27,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:27,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624606627] [2023-12-21 11:46:27,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:27,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:27,349 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 11:46:27,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:27,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624606627] [2023-12-21 11:46:27,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624606627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:27,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:27,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:46:27,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301561593] [2023-12-21 11:46:27,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:27,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:46:27,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:27,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:46:27,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:46:27,350 INFO L87 Difference]: Start difference. First operand 1239 states and 1774 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 11:46:27,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:27,545 INFO L93 Difference]: Finished difference Result 6001 states and 8635 transitions. [2023-12-21 11:46:27,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:46:27,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 60 [2023-12-21 11:46:27,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:27,557 INFO L225 Difference]: With dead ends: 6001 [2023-12-21 11:46:27,557 INFO L226 Difference]: Without dead ends: 5135 [2023-12-21 11:46:27,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 11:46:27,558 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 321 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:27,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 422 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:46:27,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5135 states. [2023-12-21 11:46:27,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5135 to 2279. [2023-12-21 11:46:27,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 1.4284460052677788) internal successors, (3254), 2278 states have internal predecessors, (3254), 0 states have call successors, (0), 0 states 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 11:46:27,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3254 transitions. [2023-12-21 11:46:27,621 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3254 transitions. Word has length 60 [2023-12-21 11:46:27,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:27,621 INFO L495 AbstractCegarLoop]: Abstraction has 2279 states and 3254 transitions. [2023-12-21 11:46:27,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 11:46:27,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3254 transitions. [2023-12-21 11:46:27,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 11:46:27,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:27,622 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:46:27,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:46:27,622 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:27,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:27,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1297742991, now seen corresponding path program 1 times [2023-12-21 11:46:27,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:27,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538349618] [2023-12-21 11:46:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:27,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:27,687 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 11:46:27,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:27,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538349618] [2023-12-21 11:46:27,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538349618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:27,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:27,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:46:27,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924699898] [2023-12-21 11:46:27,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:27,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:46:27,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:27,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:46:27,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:46:27,688 INFO L87 Difference]: Start difference. First operand 2279 states and 3254 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 11:46:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:27,833 INFO L93 Difference]: Finished difference Result 7209 states and 10363 transitions. [2023-12-21 11:46:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:46:27,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 60 [2023-12-21 11:46:27,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:27,846 INFO L225 Difference]: With dead ends: 7209 [2023-12-21 11:46:27,846 INFO L226 Difference]: Without dead ends: 5999 [2023-12-21 11:46:27,848 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 11:46:27,848 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 358 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:27,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 427 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:46:27,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5999 states. [2023-12-21 11:46:27,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5999 to 3919. [2023-12-21 11:46:27,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3919 states, 3918 states have (on average 1.4247064828994385) internal successors, (5582), 3918 states have internal predecessors, (5582), 0 states have call successors, (0), 0 states 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 11:46:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 5582 transitions. [2023-12-21 11:46:28,003 INFO L78 Accepts]: Start accepts. Automaton has 3919 states and 5582 transitions. Word has length 60 [2023-12-21 11:46:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:28,003 INFO L495 AbstractCegarLoop]: Abstraction has 3919 states and 5582 transitions. [2023-12-21 11:46:28,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 11:46:28,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3919 states and 5582 transitions. [2023-12-21 11:46:28,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 11:46:28,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:28,004 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:46:28,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:46:28,005 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:28,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:28,005 INFO L85 PathProgramCache]: Analyzing trace with hash -409009551, now seen corresponding path program 1 times [2023-12-21 11:46:28,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:28,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805492649] [2023-12-21 11:46:28,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:28,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:28,093 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 11:46:28,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:28,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805492649] [2023-12-21 11:46:28,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805492649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:28,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:28,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:46:28,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695926081] [2023-12-21 11:46:28,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:28,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:46:28,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:28,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:46:28,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:46:28,096 INFO L87 Difference]: Start difference. First operand 3919 states and 5582 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 11:46:28,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:28,289 INFO L93 Difference]: Finished difference Result 8417 states and 12083 transitions. [2023-12-21 11:46:28,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:46:28,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 60 [2023-12-21 11:46:28,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:28,305 INFO L225 Difference]: With dead ends: 8417 [2023-12-21 11:46:28,305 INFO L226 Difference]: Without dead ends: 7207 [2023-12-21 11:46:28,308 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 11:46:28,309 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 355 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:28,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 431 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:46:28,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7207 states. [2023-12-21 11:46:28,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7207 to 5127. [2023-12-21 11:46:28,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 5126 states have (on average 1.424502536090519) internal successors, (7302), 5126 states have internal predecessors, (7302), 0 states have call successors, (0), 0 states 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 11:46:28,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 7302 transitions. [2023-12-21 11:46:28,453 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 7302 transitions. Word has length 60 [2023-12-21 11:46:28,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:28,454 INFO L495 AbstractCegarLoop]: Abstraction has 5127 states and 7302 transitions. [2023-12-21 11:46:28,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 11:46:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 7302 transitions. [2023-12-21 11:46:28,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 11:46:28,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:28,455 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:46:28,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:46:28,455 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:28,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:28,455 INFO L85 PathProgramCache]: Analyzing trace with hash -672086927, now seen corresponding path program 1 times [2023-12-21 11:46:28,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:28,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378705241] [2023-12-21 11:46:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:28,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:28,529 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 11:46:28,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:28,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378705241] [2023-12-21 11:46:28,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378705241] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:28,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:28,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:46:28,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701517345] [2023-12-21 11:46:28,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:28,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:46:28,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:28,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:46:28,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:46:28,530 INFO L87 Difference]: Start difference. First operand 5127 states and 7302 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 11:46:28,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:28,776 INFO L93 Difference]: Finished difference Result 9625 states and 13803 transitions. [2023-12-21 11:46:28,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:46:28,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 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 60 [2023-12-21 11:46:28,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:28,805 INFO L225 Difference]: With dead ends: 9625 [2023-12-21 11:46:28,805 INFO L226 Difference]: Without dead ends: 8415 [2023-12-21 11:46:28,808 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 11:46:28,808 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 323 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:28,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 473 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:46:28,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8415 states. [2023-12-21 11:46:28,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8415 to 6335. [2023-12-21 11:46:28,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6335 states, 6334 states have (on average 1.4243763814335333) internal successors, (9022), 6334 states have internal predecessors, (9022), 0 states have call successors, (0), 0 states 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 11:46:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6335 states to 6335 states and 9022 transitions. [2023-12-21 11:46:28,973 INFO L78 Accepts]: Start accepts. Automaton has 6335 states and 9022 transitions. Word has length 60 [2023-12-21 11:46:28,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:28,973 INFO L495 AbstractCegarLoop]: Abstraction has 6335 states and 9022 transitions. [2023-12-21 11:46:28,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 11:46:28,973 INFO L276 IsEmpty]: Start isEmpty. Operand 6335 states and 9022 transitions. [2023-12-21 11:46:28,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 11:46:28,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:28,976 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] [2023-12-21 11:46:28,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:46:28,976 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:28,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:28,976 INFO L85 PathProgramCache]: Analyzing trace with hash 429122550, now seen corresponding path program 1 times [2023-12-21 11:46:28,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:28,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410871457] [2023-12-21 11:46:28,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:28,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:46:29,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:29,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410871457] [2023-12-21 11:46:29,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410871457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:29,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:29,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:46:29,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825401182] [2023-12-21 11:46:29,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:29,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:46:29,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:29,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:46:29,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:46:29,029 INFO L87 Difference]: Start difference. First operand 6335 states and 9022 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:29,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:29,194 INFO L93 Difference]: Finished difference Result 12643 states and 18016 transitions. [2023-12-21 11:46:29,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:46:29,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-21 11:46:29,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:29,203 INFO L225 Difference]: With dead ends: 12643 [2023-12-21 11:46:29,203 INFO L226 Difference]: Without dead ends: 6337 [2023-12-21 11:46:29,208 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 11:46:29,208 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 37 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:29,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 176 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:46:29,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6337 states. [2023-12-21 11:46:29,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6337 to 6335. [2023-12-21 11:46:29,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6335 states, 6334 states have (on average 1.4047994947900222) internal successors, (8898), 6334 states have internal predecessors, (8898), 0 states have call successors, (0), 0 states 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 11:46:29,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6335 states to 6335 states and 8898 transitions. [2023-12-21 11:46:29,354 INFO L78 Accepts]: Start accepts. Automaton has 6335 states and 8898 transitions. Word has length 61 [2023-12-21 11:46:29,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:29,354 INFO L495 AbstractCegarLoop]: Abstraction has 6335 states and 8898 transitions. [2023-12-21 11:46:29,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:29,354 INFO L276 IsEmpty]: Start isEmpty. Operand 6335 states and 8898 transitions. [2023-12-21 11:46:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 11:46:29,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:29,357 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:46:29,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:46:29,357 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:29,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:29,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1906964633, now seen corresponding path program 1 times [2023-12-21 11:46:29,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:29,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704947193] [2023-12-21 11:46:29,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:29,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:46:29,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:29,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704947193] [2023-12-21 11:46:29,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704947193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:29,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:29,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:46:29,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787477703] [2023-12-21 11:46:29,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:29,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:46:29,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:29,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:46:29,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:46:29,405 INFO L87 Difference]: Start difference. First operand 6335 states and 8898 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:29,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:29,460 INFO L93 Difference]: Finished difference Result 8731 states and 12305 transitions. [2023-12-21 11:46:29,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:46:29,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-21 11:46:29,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:29,463 INFO L225 Difference]: With dead ends: 8731 [2023-12-21 11:46:29,463 INFO L226 Difference]: Without dead ends: 2425 [2023-12-21 11:46:29,467 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 11:46:29,467 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 31 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:29,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 173 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:46:29,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2023-12-21 11:46:29,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2418. [2023-12-21 11:46:29,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2417 states have (on average 1.4004964832436906) internal successors, (3385), 2417 states have internal predecessors, (3385), 0 states have call successors, (0), 0 states 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 11:46:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3385 transitions. [2023-12-21 11:46:29,514 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3385 transitions. Word has length 62 [2023-12-21 11:46:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:29,515 INFO L495 AbstractCegarLoop]: Abstraction has 2418 states and 3385 transitions. [2023-12-21 11:46:29,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3385 transitions. [2023-12-21 11:46:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 11:46:29,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:29,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:46:29,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:46:29,516 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:29,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:29,516 INFO L85 PathProgramCache]: Analyzing trace with hash 438272804, now seen corresponding path program 1 times [2023-12-21 11:46:29,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:29,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124532334] [2023-12-21 11:46:29,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:29,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:46:29,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:29,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124532334] [2023-12-21 11:46:29,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124532334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:29,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:29,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:46:29,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445309778] [2023-12-21 11:46:29,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:29,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:46:29,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:29,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:46:29,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:46:29,587 INFO L87 Difference]: Start difference. First operand 2418 states and 3385 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:29,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:29,616 INFO L93 Difference]: Finished difference Result 3610 states and 5059 transitions. [2023-12-21 11:46:29,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:46:29,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-21 11:46:29,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:29,618 INFO L225 Difference]: With dead ends: 3610 [2023-12-21 11:46:29,642 INFO L226 Difference]: Without dead ends: 1232 [2023-12-21 11:46:29,644 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 11:46:29,645 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 33 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:29,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 152 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:46:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2023-12-21 11:46:29,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1230. [2023-12-21 11:46:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1229 states have (on average 1.3759153783563873) internal successors, (1691), 1229 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states 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 11:46:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1691 transitions. [2023-12-21 11:46:29,668 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1691 transitions. Word has length 63 [2023-12-21 11:46:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:29,668 INFO L495 AbstractCegarLoop]: Abstraction has 1230 states and 1691 transitions. [2023-12-21 11:46:29,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:29,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1691 transitions. [2023-12-21 11:46:29,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 11:46:29,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:29,669 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] [2023-12-21 11:46:29,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 11:46:29,669 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:29,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:29,669 INFO L85 PathProgramCache]: Analyzing trace with hash 888337362, now seen corresponding path program 1 times [2023-12-21 11:46:29,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:29,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250421876] [2023-12-21 11:46:29,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:29,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:29,723 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:46:29,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:29,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250421876] [2023-12-21 11:46:29,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250421876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:46:29,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:46:29,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:46:29,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561688533] [2023-12-21 11:46:29,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:46:29,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:46:29,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:29,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:46:29,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:46:29,724 INFO L87 Difference]: Start difference. First operand 1230 states and 1691 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:29,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:29,741 INFO L93 Difference]: Finished difference Result 1828 states and 2518 transitions. [2023-12-21 11:46:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:46:29,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-21 11:46:29,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:29,742 INFO L225 Difference]: With dead ends: 1828 [2023-12-21 11:46:29,742 INFO L226 Difference]: Without dead ends: 638 [2023-12-21 11:46:29,743 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 11:46:29,744 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 30 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:29,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 137 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:46:29,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2023-12-21 11:46:29,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 636. [2023-12-21 11:46:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 635 states have (on average 1.3464566929133859) internal successors, (855), 635 states have internal predecessors, (855), 0 states have call successors, (0), 0 states 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 11:46:29,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 855 transitions. [2023-12-21 11:46:29,756 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 855 transitions. Word has length 65 [2023-12-21 11:46:29,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:29,756 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 855 transitions. [2023-12-21 11:46:29,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:46:29,757 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 855 transitions. [2023-12-21 11:46:29,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 11:46:29,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:29,757 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] [2023-12-21 11:46:29,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 11:46:29,757 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:29,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:29,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1624577536, now seen corresponding path program 1 times [2023-12-21 11:46:29,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:29,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856679784] [2023-12-21 11:46:29,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:29,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:31,618 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 11:46:31,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:31,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856679784] [2023-12-21 11:46:31,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856679784] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:46:31,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948733207] [2023-12-21 11:46:31,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:31,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:46:31,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:46:31,622 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 11:46:31,656 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 11:46:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:31,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 11:46:31,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:46:31,840 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 11:46:31,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:46:31,942 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 11:46:31,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948733207] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:46:31,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:46:31,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 16 [2023-12-21 11:46:31,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862050293] [2023-12-21 11:46:31,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:46:31,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 11:46:31,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:31,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 11:46:31,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:46:31,944 INFO L87 Difference]: Start difference. First operand 636 states and 855 transitions. Second operand has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 11:46:35,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:35,155 INFO L93 Difference]: Finished difference Result 5403 states and 7184 transitions. [2023-12-21 11:46:35,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-21 11:46:35,156 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 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 67 [2023-12-21 11:46:35,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:35,161 INFO L225 Difference]: With dead ends: 5403 [2023-12-21 11:46:35,162 INFO L226 Difference]: Without dead ends: 4807 [2023-12-21 11:46:35,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=736, Invalid=3424, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 11:46:35,164 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 1550 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:35,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 608 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:46:35,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4807 states. [2023-12-21 11:46:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4807 to 4391. [2023-12-21 11:46:35,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 4390 states have (on average 1.2968109339407745) internal successors, (5693), 4390 states have internal predecessors, (5693), 0 states have call successors, (0), 0 states 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 11:46:35,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 5693 transitions. [2023-12-21 11:46:35,268 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 5693 transitions. Word has length 67 [2023-12-21 11:46:35,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:35,268 INFO L495 AbstractCegarLoop]: Abstraction has 4391 states and 5693 transitions. [2023-12-21 11:46:35,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 11:46:35,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 5693 transitions. [2023-12-21 11:46:35,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 11:46:35,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:35,269 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] [2023-12-21 11:46:35,289 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 11:46:35,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:46:35,474 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:35,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:35,475 INFO L85 PathProgramCache]: Analyzing trace with hash 385389775, now seen corresponding path program 1 times [2023-12-21 11:46:35,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:35,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981326210] [2023-12-21 11:46:35,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:35,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:36,416 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:46:36,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:36,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981326210] [2023-12-21 11:46:36,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981326210] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:46:36,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175606325] [2023-12-21 11:46:36,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:36,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:46:36,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:46:36,417 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 11:46:36,419 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 11:46:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:36,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:46:36,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:46:36,813 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 11:46:36,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:46:37,440 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 11:46:37,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175606325] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:46:37,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:46:37,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 25 [2023-12-21 11:46:37,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742349351] [2023-12-21 11:46:37,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:46:37,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 11:46:37,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:37,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 11:46:37,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2023-12-21 11:46:37,442 INFO L87 Difference]: Start difference. First operand 4391 states and 5693 transitions. Second operand has 26 states, 26 states have (on average 6.615384615384615) internal successors, (172), 25 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 11:46:39,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:39,915 INFO L93 Difference]: Finished difference Result 23647 states and 30572 transitions. [2023-12-21 11:46:39,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-21 11:46:39,915 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.615384615384615) internal successors, (172), 25 states have internal predecessors, (172), 0 states have call successors, (0), 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 68 [2023-12-21 11:46:39,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:39,938 INFO L225 Difference]: With dead ends: 23647 [2023-12-21 11:46:39,938 INFO L226 Difference]: Without dead ends: 19429 [2023-12-21 11:46:39,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=855, Invalid=3701, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 11:46:39,944 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 1737 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:39,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1737 Valid, 1030 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 11:46:39,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19429 states. [2023-12-21 11:46:40,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19429 to 18097. [2023-12-21 11:46:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18097 states, 18096 states have (on average 1.2673519009725907) internal successors, (22934), 18096 states have internal predecessors, (22934), 0 states have call successors, (0), 0 states 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 11:46:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18097 states to 18097 states and 22934 transitions. [2023-12-21 11:46:40,452 INFO L78 Accepts]: Start accepts. Automaton has 18097 states and 22934 transitions. Word has length 68 [2023-12-21 11:46:40,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:40,452 INFO L495 AbstractCegarLoop]: Abstraction has 18097 states and 22934 transitions. [2023-12-21 11:46:40,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.615384615384615) internal successors, (172), 25 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 11:46:40,453 INFO L276 IsEmpty]: Start isEmpty. Operand 18097 states and 22934 transitions. [2023-12-21 11:46:40,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 11:46:40,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:40,454 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] [2023-12-21 11:46:40,461 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 11:46:40,658 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,SelfDestructingSolverStorable19 [2023-12-21 11:46:40,659 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:40,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:40,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1811367197, now seen corresponding path program 1 times [2023-12-21 11:46:40,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:40,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65650361] [2023-12-21 11:46:40,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:40,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:40,928 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 11:46:40,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:40,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65650361] [2023-12-21 11:46:40,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65650361] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:46:40,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140895831] [2023-12-21 11:46:40,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:40,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:46:40,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:46:40,930 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 11:46:40,932 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 11:46:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:41,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:46:41,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:46:41,401 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 11:46:41,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:46:42,070 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 11:46:42,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140895831] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:46:42,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:46:42,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-12-21 11:46:42,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317157904] [2023-12-21 11:46:42,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:46:42,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 11:46:42,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:42,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 11:46:42,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2023-12-21 11:46:42,075 INFO L87 Difference]: Start difference. First operand 18097 states and 22934 transitions. Second operand has 29 states, 29 states have (on average 6.482758620689655) internal successors, (188), 28 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 11:46:44,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:44,209 INFO L93 Difference]: Finished difference Result 40903 states and 51670 transitions. [2023-12-21 11:46:44,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 11:46:44,224 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.482758620689655) internal successors, (188), 28 states have internal predecessors, (188), 0 states have call successors, (0), 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 68 [2023-12-21 11:46:44,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:44,256 INFO L225 Difference]: With dead ends: 40903 [2023-12-21 11:46:44,256 INFO L226 Difference]: Without dead ends: 23695 [2023-12-21 11:46:44,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=744, Invalid=3038, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 11:46:44,271 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 1061 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:44,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 982 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:46:44,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23695 states. [2023-12-21 11:46:44,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23695 to 10810. [2023-12-21 11:46:44,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10810 states, 10809 states have (on average 1.251919696549172) internal successors, (13532), 10809 states have internal predecessors, (13532), 0 states have call successors, (0), 0 states 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 11:46:44,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10810 states to 10810 states and 13532 transitions. [2023-12-21 11:46:44,746 INFO L78 Accepts]: Start accepts. Automaton has 10810 states and 13532 transitions. Word has length 68 [2023-12-21 11:46:44,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:44,747 INFO L495 AbstractCegarLoop]: Abstraction has 10810 states and 13532 transitions. [2023-12-21 11:46:44,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.482758620689655) internal successors, (188), 28 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 11:46:44,747 INFO L276 IsEmpty]: Start isEmpty. Operand 10810 states and 13532 transitions. [2023-12-21 11:46:44,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 11:46:44,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:44,748 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] [2023-12-21 11:46:44,774 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 11:46:44,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:46:44,975 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:44,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:44,976 INFO L85 PathProgramCache]: Analyzing trace with hash -729835042, now seen corresponding path program 1 times [2023-12-21 11:46:44,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:44,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891131503] [2023-12-21 11:46:44,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:44,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:45,225 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 11:46:45,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:45,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891131503] [2023-12-21 11:46:45,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891131503] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:46:45,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924727374] [2023-12-21 11:46:45,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:45,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:46:45,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:46:45,227 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 11:46:45,260 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 11:46:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:45,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:46:45,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:46:45,627 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 11:46:45,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:46:46,398 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 11:46:46,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924727374] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:46:46,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:46:46,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 25 [2023-12-21 11:46:46,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825745260] [2023-12-21 11:46:46,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:46:46,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 11:46:46,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:46,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 11:46:46,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2023-12-21 11:46:46,400 INFO L87 Difference]: Start difference. First operand 10810 states and 13532 transitions. Second operand has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 25 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 11:46:47,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:46:47,470 INFO L93 Difference]: Finished difference Result 31428 states and 39214 transitions. [2023-12-21 11:46:47,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:46:47,472 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 25 states have internal predecessors, (178), 0 states have call successors, (0), 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 69 [2023-12-21 11:46:47,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:46:47,493 INFO L225 Difference]: With dead ends: 31428 [2023-12-21 11:46:47,494 INFO L226 Difference]: Without dead ends: 21581 [2023-12-21 11:46:47,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=1068, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 11:46:47,504 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 289 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:46:47,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 811 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:46:47,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21581 states. [2023-12-21 11:46:48,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21581 to 20935. [2023-12-21 11:46:48,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20935 states, 20934 states have (on average 1.2435750453807204) internal successors, (26033), 20934 states have internal predecessors, (26033), 0 states have call successors, (0), 0 states 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 11:46:48,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20935 states to 20935 states and 26033 transitions. [2023-12-21 11:46:48,215 INFO L78 Accepts]: Start accepts. Automaton has 20935 states and 26033 transitions. Word has length 69 [2023-12-21 11:46:48,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:46:48,215 INFO L495 AbstractCegarLoop]: Abstraction has 20935 states and 26033 transitions. [2023-12-21 11:46:48,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 25 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 11:46:48,215 INFO L276 IsEmpty]: Start isEmpty. Operand 20935 states and 26033 transitions. [2023-12-21 11:46:48,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 11:46:48,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:46:48,216 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] [2023-12-21 11:46:48,221 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 11:46:48,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:46:48,421 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:46:48,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:46:48,421 INFO L85 PathProgramCache]: Analyzing trace with hash -129186099, now seen corresponding path program 1 times [2023-12-21 11:46:48,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:46:48,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663508319] [2023-12-21 11:46:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:48,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:46:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:49,857 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 11:46:49,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:46:49,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663508319] [2023-12-21 11:46:49,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663508319] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:46:49,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679208735] [2023-12-21 11:46:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:46:49,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:46:49,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:46:49,859 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 11:46:49,861 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 11:46:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:46:49,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-21 11:46:49,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:46:55,607 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 11:46:55,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:46:59,914 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 11:46:59,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679208735] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:46:59,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:46:59,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27, 26] total 75 [2023-12-21 11:46:59,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713461581] [2023-12-21 11:46:59,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:46:59,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-12-21 11:46:59,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:46:59,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-12-21 11:46:59,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=521, Invalid=5029, Unknown=0, NotChecked=0, Total=5550 [2023-12-21 11:46:59,917 INFO L87 Difference]: Start difference. First operand 20935 states and 26033 transitions. Second operand has 75 states, 75 states have (on average 2.64) internal successors, (198), 75 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 11:49:30,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:49:30,983 INFO L93 Difference]: Finished difference Result 80523 states and 98949 transitions. [2023-12-21 11:49:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 396 states. [2023-12-21 11:49:30,984 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.64) internal successors, (198), 75 states have internal predecessors, (198), 0 states have call successors, (0), 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 70 [2023-12-21 11:49:30,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:49:31,056 INFO L225 Difference]: With dead ends: 80523 [2023-12-21 11:49:31,057 INFO L226 Difference]: Without dead ends: 69630 [2023-12-21 11:49:31,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 465 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85692 ImplicationChecksByTransitivity, 144.6s TimeCoverageRelationStatistics Valid=23498, Invalid=194124, Unknown=0, NotChecked=0, Total=217622 [2023-12-21 11:49:31,089 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 5376 mSDsluCounter, 5085 mSDsCounter, 0 mSdLazyCounter, 7642 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5376 SdHoareTripleChecker+Valid, 5216 SdHoareTripleChecker+Invalid, 7935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 7642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:49:31,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5376 Valid, 5216 Invalid, 7935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 7642 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-21 11:49:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69630 states. [2023-12-21 11:49:33,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69630 to 36023. [2023-12-21 11:49:33,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36023 states, 36022 states have (on average 1.2446838043417912) internal successors, (44836), 36022 states have internal predecessors, (44836), 0 states have call successors, (0), 0 states 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 11:49:33,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36023 states to 36023 states and 44836 transitions. [2023-12-21 11:49:33,299 INFO L78 Accepts]: Start accepts. Automaton has 36023 states and 44836 transitions. Word has length 70 [2023-12-21 11:49:33,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:49:33,299 INFO L495 AbstractCegarLoop]: Abstraction has 36023 states and 44836 transitions. [2023-12-21 11:49:33,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.64) internal successors, (198), 75 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 11:49:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 36023 states and 44836 transitions. [2023-12-21 11:49:33,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 11:49:33,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:49:33,303 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] [2023-12-21 11:49:33,310 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 11:49:33,508 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,SelfDestructingSolverStorable22 [2023-12-21 11:49:33,508 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:49:33,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:49:33,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1988555279, now seen corresponding path program 1 times [2023-12-21 11:49:33,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:49:33,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277452065] [2023-12-21 11:49:33,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:49:33,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:49:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:49:34,014 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 11:49:34,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:49:34,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277452065] [2023-12-21 11:49:34,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277452065] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:49:34,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966414109] [2023-12-21 11:49:34,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:49:34,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:49:34,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:49:34,016 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 11:49:34,035 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 11:49:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:49:34,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 11:49:34,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:49:34,866 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 11:49:34,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:49:35,409 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 11:49:35,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966414109] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:49:35,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:49:35,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 32 [2023-12-21 11:49:35,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897178078] [2023-12-21 11:49:35,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:49:35,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 11:49:35,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:49:35,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 11:49:35,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 11:49:35,412 INFO L87 Difference]: Start difference. First operand 36023 states and 44836 transitions. Second operand has 33 states, 33 states have (on average 5.696969696969697) internal successors, (188), 32 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 11:49:44,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:49:44,803 INFO L93 Difference]: Finished difference Result 76878 states and 94556 transitions. [2023-12-21 11:49:44,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-12-21 11:49:44,804 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.696969696969697) internal successors, (188), 32 states have internal predecessors, (188), 0 states have call successors, (0), 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 70 [2023-12-21 11:49:44,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:49:44,861 INFO L225 Difference]: With dead ends: 76878 [2023-12-21 11:49:44,862 INFO L226 Difference]: Without dead ends: 56430 [2023-12-21 11:49:44,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6365 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3142, Invalid=15218, Unknown=0, NotChecked=0, Total=18360 [2023-12-21 11:49:44,873 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 4136 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:49:44,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4136 Valid, 2078 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:49:44,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56430 states. [2023-12-21 11:49:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56430 to 21937. [2023-12-21 11:49:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21937 states, 21936 states have (on average 1.237053245805981) internal successors, (27136), 21936 states have internal predecessors, (27136), 0 states have call successors, (0), 0 states 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 11:49:46,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21937 states to 21937 states and 27136 transitions. [2023-12-21 11:49:46,364 INFO L78 Accepts]: Start accepts. Automaton has 21937 states and 27136 transitions. Word has length 70 [2023-12-21 11:49:46,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:49:46,365 INFO L495 AbstractCegarLoop]: Abstraction has 21937 states and 27136 transitions. [2023-12-21 11:49:46,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.696969696969697) internal successors, (188), 32 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 11:49:46,365 INFO L276 IsEmpty]: Start isEmpty. Operand 21937 states and 27136 transitions. [2023-12-21 11:49:46,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 11:49:46,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:49:46,365 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] [2023-12-21 11:49:46,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 11:49:46,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:49:46,570 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:49:46,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:49:46,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2112431369, now seen corresponding path program 1 times [2023-12-21 11:49:46,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:49:46,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600420947] [2023-12-21 11:49:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:49:46,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:49:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:49:48,328 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 11:49:48,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:49:48,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600420947] [2023-12-21 11:49:48,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600420947] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:49:48,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918804993] [2023-12-21 11:49:48,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:49:48,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:49:48,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:49:48,329 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 11:49:48,331 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 11:49:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:49:48,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 11:49:48,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:49:53,892 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 11:49:53,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:50:00,006 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 11:50:00,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918804993] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:50:00,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:50:00,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 29] total 79 [2023-12-21 11:50:00,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766669038] [2023-12-21 11:50:00,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:50:00,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-12-21 11:50:00,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:00,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-12-21 11:50:00,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=588, Invalid=5732, Unknown=0, NotChecked=0, Total=6320 [2023-12-21 11:50:00,008 INFO L87 Difference]: Start difference. First operand 21937 states and 27136 transitions. Second operand has 80 states, 80 states have (on average 2.5) internal successors, (200), 79 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 11:53:39,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:53:39,758 INFO L93 Difference]: Finished difference Result 114589 states and 140561 transitions. [2023-12-21 11:53:39,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 449 states. [2023-12-21 11:53:39,758 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.5) internal successors, (200), 79 states have internal predecessors, (200), 0 states have call successors, (0), 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 72 [2023-12-21 11:53:39,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:53:39,876 INFO L225 Difference]: With dead ends: 114589 [2023-12-21 11:53:39,876 INFO L226 Difference]: Without dead ends: 105790 [2023-12-21 11:53:39,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 521 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117870 ImplicationChecksByTransitivity, 206.0s TimeCoverageRelationStatistics Valid=35566, Invalid=237440, Unknown=0, NotChecked=0, Total=273006 [2023-12-21 11:53:39,903 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 7473 mSDsluCounter, 6062 mSDsCounter, 0 mSdLazyCounter, 9502 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7473 SdHoareTripleChecker+Valid, 6246 SdHoareTripleChecker+Invalid, 9903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 9502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:53:39,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7473 Valid, 6246 Invalid, 9903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 9502 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-12-21 11:53:39,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105790 states. [2023-12-21 11:53:42,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105790 to 26393. [2023-12-21 11:53:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26393 states, 26392 states have (on average 1.2378751136708093) internal successors, (32670), 26392 states have internal predecessors, (32670), 0 states have call successors, (0), 0 states 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 11:53:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26393 states to 26393 states and 32670 transitions. [2023-12-21 11:53:42,927 INFO L78 Accepts]: Start accepts. Automaton has 26393 states and 32670 transitions. Word has length 72 [2023-12-21 11:53:42,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:53:42,927 INFO L495 AbstractCegarLoop]: Abstraction has 26393 states and 32670 transitions. [2023-12-21 11:53:42,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.5) internal successors, (200), 79 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 11:53:42,928 INFO L276 IsEmpty]: Start isEmpty. Operand 26393 states and 32670 transitions. [2023-12-21 11:53:42,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 11:53:42,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:53:42,932 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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 11:53:42,937 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 11:53:43,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:53:43,137 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:53:43,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:53:43,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1819983748, now seen corresponding path program 1 times [2023-12-21 11:53:43,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:53:43,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233280221] [2023-12-21 11:53:43,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:43,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:53:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 28 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:43,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:53:43,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233280221] [2023-12-21 11:53:43,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233280221] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:53:43,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364993759] [2023-12-21 11:53:43,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:43,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:53:43,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:53:43,676 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 11:53:43,678 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 11:53:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:43,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 11:53:43,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:53:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 25 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:44,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:53:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 20 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:45,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364993759] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:53:45,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:53:45,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-12-21 11:53:45,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939506475] [2023-12-21 11:53:45,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:53:45,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 11:53:45,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:53:45,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 11:53:45,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 11:53:45,961 INFO L87 Difference]: Start difference. First operand 26393 states and 32670 transitions. Second operand has 33 states, 33 states have (on average 9.333333333333334) internal successors, (308), 33 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 11:53:56,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:53:56,226 INFO L93 Difference]: Finished difference Result 60159 states and 73985 transitions. [2023-12-21 11:53:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-21 11:53:56,226 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.333333333333334) internal successors, (308), 33 states have internal predecessors, (308), 0 states have call successors, (0), 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 113 [2023-12-21 11:53:56,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:53:56,264 INFO L225 Difference]: With dead ends: 60159 [2023-12-21 11:53:56,265 INFO L226 Difference]: Without dead ends: 39391 [2023-12-21 11:53:56,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4776 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2758, Invalid=14534, Unknown=0, NotChecked=0, Total=17292 [2023-12-21 11:53:56,295 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1817 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:53:56,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 1318 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:53:56,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39391 states. [2023-12-21 11:53:58,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39391 to 28298. [2023-12-21 11:53:59,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28298 states, 28297 states have (on average 1.2127787397957381) internal successors, (34318), 28297 states have internal predecessors, (34318), 0 states have call successors, (0), 0 states 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 11:53:59,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28298 states to 28298 states and 34318 transitions. [2023-12-21 11:53:59,045 INFO L78 Accepts]: Start accepts. Automaton has 28298 states and 34318 transitions. Word has length 113 [2023-12-21 11:53:59,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:53:59,045 INFO L495 AbstractCegarLoop]: Abstraction has 28298 states and 34318 transitions. [2023-12-21 11:53:59,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.333333333333334) internal successors, (308), 33 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 11:53:59,045 INFO L276 IsEmpty]: Start isEmpty. Operand 28298 states and 34318 transitions. [2023-12-21 11:53:59,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 11:53:59,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:53:59,048 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:53:59,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 11:53:59,252 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,SelfDestructingSolverStorable25 [2023-12-21 11:53:59,253 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:53:59,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:53:59,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1544125151, now seen corresponding path program 1 times [2023-12-21 11:53:59,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:53:59,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172769394] [2023-12-21 11:53:59,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:59,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:53:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:59,838 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:59,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:53:59,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172769394] [2023-12-21 11:53:59,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172769394] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:53:59,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045579198] [2023-12-21 11:53:59,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:59,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:53:59,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:53:59,849 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 11:53:59,860 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 11:53:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:59,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 11:53:59,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:54:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:54:00,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:54:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:54:01,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045579198] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:54:01,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:54:01,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 31 [2023-12-21 11:54:01,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695054993] [2023-12-21 11:54:01,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:54:01,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 11:54:01,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:54:01,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 11:54:01,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2023-12-21 11:54:01,926 INFO L87 Difference]: Start difference. First operand 28298 states and 34318 transitions. Second operand has 32 states, 32 states have (on average 8.59375) internal successors, (275), 31 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 11:54:06,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:54:06,106 INFO L93 Difference]: Finished difference Result 42610 states and 52010 transitions. [2023-12-21 11:54:06,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-21 11:54:06,107 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.59375) internal successors, (275), 31 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-21 11:54:06,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:54:06,138 INFO L225 Difference]: With dead ends: 42610 [2023-12-21 11:54:06,138 INFO L226 Difference]: Without dead ends: 32713 [2023-12-21 11:54:06,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1061, Invalid=3495, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 11:54:06,147 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 1133 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:54:06,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 808 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:54:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32713 states. [2023-12-21 11:54:08,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32713 to 17529. [2023-12-21 11:54:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17529 states, 17528 states have (on average 1.2087517115472386) internal successors, (21187), 17528 states have internal predecessors, (21187), 0 states have call successors, (0), 0 states 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 11:54:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17529 states to 17529 states and 21187 transitions. [2023-12-21 11:54:08,281 INFO L78 Accepts]: Start accepts. Automaton has 17529 states and 21187 transitions. Word has length 114 [2023-12-21 11:54:08,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:54:08,281 INFO L495 AbstractCegarLoop]: Abstraction has 17529 states and 21187 transitions. [2023-12-21 11:54:08,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.59375) internal successors, (275), 31 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 11:54:08,281 INFO L276 IsEmpty]: Start isEmpty. Operand 17529 states and 21187 transitions. [2023-12-21 11:54:08,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 11:54:08,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:54:08,284 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:54:08,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 11:54:08,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-21 11:54:08,488 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:54:08,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:54:08,488 INFO L85 PathProgramCache]: Analyzing trace with hash -494462439, now seen corresponding path program 1 times [2023-12-21 11:54:08,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:54:08,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133099731] [2023-12-21 11:54:08,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:54:08,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:54:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:54:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 41 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:54:08,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:54:08,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133099731] [2023-12-21 11:54:08,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133099731] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:54:08,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037619695] [2023-12-21 11:54:08,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:54:08,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:54:08,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:54:08,949 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 11:54:08,967 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 11:54:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:54:09,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 11:54:09,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:54:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:54:10,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:54:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:54:12,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037619695] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:54:12,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:54:12,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 46 [2023-12-21 11:54:12,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941323329] [2023-12-21 11:54:12,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:54:12,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-21 11:54:12,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:54:12,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-21 11:54:12,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1898, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 11:54:12,904 INFO L87 Difference]: Start difference. First operand 17529 states and 21187 transitions. Second operand has 46 states, 46 states have (on average 6.673913043478261) internal successors, (307), 46 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 11:54:48,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:54:48,483 INFO L93 Difference]: Finished difference Result 60815 states and 73126 transitions. [2023-12-21 11:54:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2023-12-21 11:54:48,484 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.673913043478261) internal successors, (307), 46 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-21 11:54:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:54:48,526 INFO L225 Difference]: With dead ends: 60815 [2023-12-21 11:54:48,526 INFO L226 Difference]: Without dead ends: 48279 [2023-12-21 11:54:48,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24107 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=8312, Invalid=57480, Unknown=0, NotChecked=0, Total=65792 [2023-12-21 11:54:48,536 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 4837 mSDsluCounter, 3692 mSDsCounter, 0 mSdLazyCounter, 4967 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4837 SdHoareTripleChecker+Valid, 3862 SdHoareTripleChecker+Invalid, 5170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 4967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:54:48,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4837 Valid, 3862 Invalid, 5170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 4967 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-21 11:54:48,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48279 states. [2023-12-21 11:54:52,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48279 to 31092. [2023-12-21 11:54:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31092 states, 31091 states have (on average 1.1908590910552894) internal successors, (37025), 31091 states have internal predecessors, (37025), 0 states have call successors, (0), 0 states 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 11:54:52,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31092 states to 31092 states and 37025 transitions. [2023-12-21 11:54:52,437 INFO L78 Accepts]: Start accepts. Automaton has 31092 states and 37025 transitions. Word has length 114 [2023-12-21 11:54:52,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:54:52,437 INFO L495 AbstractCegarLoop]: Abstraction has 31092 states and 37025 transitions. [2023-12-21 11:54:52,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.673913043478261) internal successors, (307), 46 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 11:54:52,437 INFO L276 IsEmpty]: Start isEmpty. Operand 31092 states and 37025 transitions. [2023-12-21 11:54:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 11:54:52,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:54:52,458 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2023-12-21 11:54:52,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 11:54:52,676 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,SelfDestructingSolverStorable27 [2023-12-21 11:54:52,676 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:54:52,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:54:52,677 INFO L85 PathProgramCache]: Analyzing trace with hash 361333342, now seen corresponding path program 1 times [2023-12-21 11:54:52,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:54:52,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300747608] [2023-12-21 11:54:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:54:52,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:54:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:54:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:54:53,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:54:53,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300747608] [2023-12-21 11:54:53,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300747608] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:54:53,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131098848] [2023-12-21 11:54:53,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:54:53,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:54:53,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:54:53,893 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 11:54:53,894 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 11:54:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:54:54,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-21 11:54:54,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:54:55,258 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:54:55,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:54:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:54:58,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131098848] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:54:58,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:54:58,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 17] total 54 [2023-12-21 11:54:58,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223620179] [2023-12-21 11:54:58,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:54:58,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-21 11:54:58,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:54:58,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-21 11:54:58,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2632, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 11:54:58,286 INFO L87 Difference]: Start difference. First operand 31092 states and 37025 transitions. Second operand has 54 states, 54 states have (on average 5.481481481481482) internal successors, (296), 54 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 11:55:50,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:50,344 INFO L93 Difference]: Finished difference Result 67474 states and 80162 transitions. [2023-12-21 11:55:50,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2023-12-21 11:55:50,345 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.481481481481482) internal successors, (296), 54 states have internal predecessors, (296), 0 states have call successors, (0), 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 115 [2023-12-21 11:55:50,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:50,402 INFO L225 Difference]: With dead ends: 67474 [2023-12-21 11:55:50,402 INFO L226 Difference]: Without dead ends: 57855 [2023-12-21 11:55:50,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23846 ImplicationChecksByTransitivity, 41.4s TimeCoverageRelationStatistics Valid=9834, Invalid=59072, Unknown=0, NotChecked=0, Total=68906 [2023-12-21 11:55:50,412 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 5468 mSDsluCounter, 4670 mSDsCounter, 0 mSdLazyCounter, 4219 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5468 SdHoareTripleChecker+Valid, 4870 SdHoareTripleChecker+Invalid, 4572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 4219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:50,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5468 Valid, 4870 Invalid, 4572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 4219 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-21 11:55:50,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57855 states. [2023-12-21 11:55:57,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57855 to 44363. [2023-12-21 11:55:57,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44363 states, 44362 states have (on average 1.189937333754114) internal successors, (52788), 44362 states have internal predecessors, (52788), 0 states have call successors, (0), 0 states 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 11:55:57,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44363 states to 44363 states and 52788 transitions. [2023-12-21 11:55:57,298 INFO L78 Accepts]: Start accepts. Automaton has 44363 states and 52788 transitions. Word has length 115 [2023-12-21 11:55:57,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:57,298 INFO L495 AbstractCegarLoop]: Abstraction has 44363 states and 52788 transitions. [2023-12-21 11:55:57,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.481481481481482) internal successors, (296), 54 states have internal predecessors, (296), 0 states have call successors, (0), 0 states 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 11:55:57,298 INFO L276 IsEmpty]: Start isEmpty. Operand 44363 states and 52788 transitions. [2023-12-21 11:55:57,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 11:55:57,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:57,301 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2023-12-21 11:55:57,314 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 11:55:57,506 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,SelfDestructingSolverStorable28 [2023-12-21 11:55:57,506 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:57,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:57,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1316941822, now seen corresponding path program 1 times [2023-12-21 11:55:57,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:57,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523445066] [2023-12-21 11:55:57,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:57,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 31 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:59,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:59,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523445066] [2023-12-21 11:55:59,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523445066] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:55:59,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092806827] [2023-12-21 11:55:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:59,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:55:59,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:55:59,824 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 11:55:59,825 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 11:55:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:59,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 11:55:59,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:56:01,869 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:56:01,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:56:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:56:04,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092806827] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:56:04,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:56:04,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 18, 18] total 64 [2023-12-21 11:56:04,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285803757] [2023-12-21 11:56:04,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:56:04,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 11:56:04,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:56:04,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 11:56:04,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=3815, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 11:56:04,917 INFO L87 Difference]: Start difference. First operand 44363 states and 52788 transitions. Second operand has 64 states, 64 states have (on average 5.1875) internal successors, (332), 64 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 11:59:16,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:59:16,448 INFO L93 Difference]: Finished difference Result 152074 states and 180317 transitions. [2023-12-21 11:59:16,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 506 states. [2023-12-21 11:59:16,449 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.1875) internal successors, (332), 64 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 115 [2023-12-21 11:59:16,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:59:16,579 INFO L225 Difference]: With dead ends: 152074 [2023-12-21 11:59:16,579 INFO L226 Difference]: Without dead ends: 123282 [2023-12-21 11:59:16,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 566 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136774 ImplicationChecksByTransitivity, 156.5s TimeCoverageRelationStatistics Valid=29491, Invalid=292565, Unknown=0, NotChecked=0, Total=322056 [2023-12-21 11:59:16,609 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 7694 mSDsluCounter, 11171 mSDsCounter, 0 mSdLazyCounter, 12421 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7694 SdHoareTripleChecker+Valid, 11550 SdHoareTripleChecker+Invalid, 12934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 12421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:59:16,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7694 Valid, 11550 Invalid, 12934 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [513 Valid, 12421 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2023-12-21 11:59:16,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123282 states. [2023-12-21 11:59:27,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123282 to 56704. [2023-12-21 11:59:27,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56704 states, 56703 states have (on average 1.1849813942824894) internal successors, (67192), 56703 states have internal predecessors, (67192), 0 states have call successors, (0), 0 states 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 11:59:27,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56704 states to 56704 states and 67192 transitions. [2023-12-21 11:59:27,377 INFO L78 Accepts]: Start accepts. Automaton has 56704 states and 67192 transitions. Word has length 115 [2023-12-21 11:59:27,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:59:27,377 INFO L495 AbstractCegarLoop]: Abstraction has 56704 states and 67192 transitions. [2023-12-21 11:59:27,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.1875) internal successors, (332), 64 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 11:59:27,378 INFO L276 IsEmpty]: Start isEmpty. Operand 56704 states and 67192 transitions. [2023-12-21 11:59:27,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 11:59:27,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:59:27,380 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2023-12-21 11:59:27,388 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 11:59:27,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:59:27,586 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:59:27,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:59:27,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1021834846, now seen corresponding path program 1 times [2023-12-21 11:59:27,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:59:27,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413211552] [2023-12-21 11:59:27,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:59:27,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:59:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:59:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:59:29,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:59:29,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413211552] [2023-12-21 11:59:29,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413211552] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:59:29,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695297484] [2023-12-21 11:59:29,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:59:29,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:59:29,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:59:29,293 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 11:59:29,295 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 11:59:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:59:29,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 11:59:29,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:59:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:59:32,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:59:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 39 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:59:38,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695297484] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:59:38,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:59:38,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26, 30] total 83 [2023-12-21 11:59:38,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654862304] [2023-12-21 11:59:38,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:59:38,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-12-21 11:59:38,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:59:38,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-12-21 11:59:38,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=6315, Unknown=0, NotChecked=0, Total=6806 [2023-12-21 11:59:38,466 INFO L87 Difference]: Start difference. First operand 56704 states and 67192 transitions. Second operand has 83 states, 83 states have (on average 3.8795180722891565) internal successors, (322), 83 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-21 12:00:26,469 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 12:00:26,471 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 12:00:26,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-12-21 12:00:26,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7245 ImplicationChecksByTransitivity, 46.7s TimeCoverageRelationStatistics Valid=4514, Invalid=25588, Unknown=0, NotChecked=0, Total=30102 [2023-12-21 12:00:26,486 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 1875 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 4849 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 5020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 4849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-21 12:00:26,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1875 Valid, 3146 Invalid, 5020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 4849 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-21 12:00:26,488 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 12:00:26,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 12:00:26,705 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,SelfDestructingSolverStorable30 [2023-12-21 12:00:26,705 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (56704states) and FLOYD_HOARE automaton (currently 103 states, 83 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-28-8-3-3-2-2-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-25-5-2-3-2-1 context. [2023-12-21 12:00:26,717 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-21 12:00:26,723 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 12:00:26,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 12:00:26 BoogieIcfgContainer [2023-12-21 12:00:26,728 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 12:00:26,731 INFO L158 Benchmark]: Toolchain (without parser) took 841918.59ms. Allocated memory was 340.8MB in the beginning and 3.2GB in the end (delta: 2.9GB). Free memory was 297.7MB in the beginning and 999.6MB in the end (delta: -701.9MB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-21 12:00:26,731 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 221.2MB. Free memory is still 169.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 12:00:26,733 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.32ms. Allocated memory is still 340.8MB. Free memory was 297.3MB in the beginning and 283.0MB in the end (delta: 14.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-21 12:00:26,737 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.03ms. Allocated memory is still 340.8MB. Free memory was 283.0MB in the beginning and 280.6MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-21 12:00:26,737 INFO L158 Benchmark]: Boogie Preprocessor took 46.38ms. Allocated memory is still 340.8MB. Free memory was 280.6MB in the beginning and 277.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 12:00:26,738 INFO L158 Benchmark]: RCFGBuilder took 355.92ms. Allocated memory is still 340.8MB. Free memory was 277.8MB in the beginning and 254.3MB in the end (delta: 23.4MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-21 12:00:26,738 INFO L158 Benchmark]: TraceAbstraction took 841247.92ms. Allocated memory was 340.8MB in the beginning and 3.2GB in the end (delta: 2.9GB). Free memory was 253.7MB in the beginning and 999.6MB in the end (delta: -745.9MB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-21 12:00:26,739 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 221.2MB. Free memory is still 169.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 222.32ms. Allocated memory is still 340.8MB. Free memory was 297.3MB in the beginning and 283.0MB in the end (delta: 14.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.03ms. Allocated memory is still 340.8MB. Free memory was 283.0MB in the beginning and 280.6MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.38ms. Allocated memory is still 340.8MB. Free memory was 280.6MB in the beginning and 277.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 355.92ms. Allocated memory is still 340.8MB. Free memory was 277.8MB in the beginning and 254.3MB in the end (delta: 23.4MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 841247.92ms. Allocated memory was 340.8MB in the beginning and 3.2GB in the end (delta: 2.9GB). Free memory was 253.7MB in the beginning and 999.6MB in the end (delta: -745.9MB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 353]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 353). Cancelled while NwaCegarLoop was constructing difference of abstraction (56704states) and FLOYD_HOARE automaton (currently 103 states, 83 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-28-8-3-3-2-2-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying a ∨-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-25-5-2-3-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 841.2s, OverallIterations: 31, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 733.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46724 SdHoareTripleChecker+Valid, 50.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46724 mSDsluCounter, 47468 SdHoareTripleChecker+Invalid, 45.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43865 mSDsCounter, 2306 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 51532 IncrementalHoareTripleChecker+Invalid, 53838 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2306 mSolverCounterUnsat, 3603 mSDtfsCounter, 51532 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4857 GetRequests, 2002 SyntacticMatches, 2 SemanticMatches, 2852 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411025 ImplicationChecksByTransitivity, 644.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56704occurred in iteration=30, InterpolantAutomatonStates: 2254, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 35.8s AutomataMinimizationTime, 30 MinimizatonAttempts, 295645 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 67.2s InterpolantComputationTime, 3210 NumberOfCodeBlocks, 3210 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 4323 ConstructedInterpolants, 0 QuantifiedInterpolants, 101380 SizeOfPredicates, 114 NumberOfNonLiveVariables, 4759 ConjunctsInSsa, 361 ConjunctsInUnsatCore, 57 InterpolantComputations, 18 PerfectInterpolantSequences, 809/2120 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown