/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:14:08,722 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:14:08,801 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:14:08,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:14:08,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:14:08,825 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:14:08,826 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:14:08,826 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:14:08,826 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:14:08,826 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:14:08,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:14:08,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:14:08,827 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:14:08,828 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:14:08,828 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:14:08,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:14:08,828 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:14:08,829 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:14:08,829 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:14:08,829 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:14:08,829 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:14:08,830 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:14:08,830 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:14:08,830 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:14:08,830 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:14:08,830 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:14:08,831 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:14:08,831 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:14:08,831 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:14:08,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:14:08,832 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:14:08,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:14:08,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:14:08,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:14:08,833 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:14:08,833 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:14:08,833 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:14:08,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:14:08,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:14:08,834 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:14:08,834 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:14:08,834 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:14:08,834 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:14:08,835 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:14:09,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:14:09,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:14:09,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:14:09,063 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:14:09,063 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:14:09,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2023-12-15 23:14:10,199 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:14:10,351 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:14:10,352 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2023-12-15 23:14:10,359 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad199aa4b/68ec658b757747f7a488c5e391458841/FLAG1f60d4bfe [2023-12-15 23:14:10,369 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad199aa4b/68ec658b757747f7a488c5e391458841 [2023-12-15 23:14:10,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:14:10,372 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:14:10,373 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:14:10,373 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:14:10,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:14:10,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:14:10" (1/1) ... [2023-12-15 23:14:10,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433926af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:10, skipping insertion in model container [2023-12-15 23:14:10,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:14:10" (1/1) ... [2023-12-15 23:14:10,414 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:14:10,593 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c[12751,12764] [2023-12-15 23:14:10,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:14:10,602 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:14:10,640 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c[12751,12764] [2023-12-15 23:14:10,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:14:10,651 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:14:10,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:10 WrapperNode [2023-12-15 23:14:10,651 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:14:10,652 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:14:10,652 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:14:10,652 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:14:10,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:10" (1/1) ... [2023-12-15 23:14:10,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:10" (1/1) ... [2023-12-15 23:14:10,698 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 375 [2023-12-15 23:14:10,698 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:14:10,699 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:14:10,699 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:14:10,699 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:14:10,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:10" (1/1) ... [2023-12-15 23:14:10,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:10" (1/1) ... [2023-12-15 23:14:10,714 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:10" (1/1) ... [2023-12-15 23:14:10,732 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]. [2023-12-15 23:14:10,732 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:10" (1/1) ... [2023-12-15 23:14:10,732 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:10" (1/1) ... [2023-12-15 23:14:10,737 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:10" (1/1) ... [2023-12-15 23:14:10,753 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:10" (1/1) ... [2023-12-15 23:14:10,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:10" (1/1) ... [2023-12-15 23:14:10,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:10" (1/1) ... [2023-12-15 23:14:10,758 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:14:10,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:14:10,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:14:10,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:14:10,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:10" (1/1) ... [2023-12-15 23:14:10,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:14:10,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:14:10,801 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) [2023-12-15 23:14:10,818 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 [2023-12-15 23:14:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:14:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:14:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:14:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:14:10,922 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:14:10,928 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:14:11,268 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:14:11,293 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:14:11,293 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 23:14:11,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:14:11 BoogieIcfgContainer [2023-12-15 23:14:11,293 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:14:11,295 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:14:11,295 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:14:11,297 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:14:11,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:14:10" (1/3) ... [2023-12-15 23:14:11,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10558025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:14:11, skipping insertion in model container [2023-12-15 23:14:11,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:14:10" (2/3) ... [2023-12-15 23:14:11,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10558025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:14:11, skipping insertion in model container [2023-12-15 23:14:11,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:14:11" (3/3) ... [2023-12-15 23:14:11,299 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2023-12-15 23:14:11,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:14:11,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:14:11,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:14:11,355 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;@37dd8931, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:14:11,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:14:11,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 95 states have (on average 1.7894736842105263) internal successors, (170), 96 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:11,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-15 23:14:11,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:11,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:11,370 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:11,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:11,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1646132803, now seen corresponding path program 1 times [2023-12-15 23:14:11,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:11,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235772977] [2023-12-15 23:14:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:11,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:11,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:11,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235772977] [2023-12-15 23:14:11,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235772977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:11,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:11,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 23:14:11,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597795838] [2023-12-15 23:14:11,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:11,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 23:14:11,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:11,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 23:14:11,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 23:14:11,725 INFO L87 Difference]: Start difference. First operand has 97 states, 95 states have (on average 1.7894736842105263) internal successors, (170), 96 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:11,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:11,790 INFO L93 Difference]: Finished difference Result 159 states and 272 transitions. [2023-12-15 23:14:11,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 23:14:11,806 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-15 23:14:11,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:11,815 INFO L225 Difference]: With dead ends: 159 [2023-12-15 23:14:11,815 INFO L226 Difference]: Without dead ends: 95 [2023-12-15 23:14:11,817 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 [2023-12-15 23:14:11,820 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:11,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 163 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:11,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-15 23:14:11,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-15 23:14:11,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.7553191489361701) internal successors, (165), 94 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 165 transitions. [2023-12-15 23:14:11,889 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 165 transitions. Word has length 30 [2023-12-15 23:14:11,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:11,889 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 165 transitions. [2023-12-15 23:14:11,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 165 transitions. [2023-12-15 23:14:11,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-15 23:14:11,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:11,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:11,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:14:11,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:11,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:11,894 INFO L85 PathProgramCache]: Analyzing trace with hash 277095231, now seen corresponding path program 1 times [2023-12-15 23:14:11,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:11,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477336233] [2023-12-15 23:14:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:11,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:12,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:12,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477336233] [2023-12-15 23:14:12,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477336233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:12,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:12,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:14:12,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608430347] [2023-12-15 23:14:12,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:12,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:14:12,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:12,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:14:12,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:14:12,166 INFO L87 Difference]: Start difference. First operand 95 states and 165 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:12,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:12,242 INFO L93 Difference]: Finished difference Result 157 states and 265 transitions. [2023-12-15 23:14:12,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:14:12,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-15 23:14:12,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:12,246 INFO L225 Difference]: With dead ends: 157 [2023-12-15 23:14:12,246 INFO L226 Difference]: Without dead ends: 95 [2023-12-15 23:14:12,247 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 [2023-12-15 23:14:12,247 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:12,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 451 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:14:12,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-15 23:14:12,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-15 23:14:12,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 94 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:12,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 133 transitions. [2023-12-15 23:14:12,252 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 133 transitions. Word has length 30 [2023-12-15 23:14:12,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:12,252 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 133 transitions. [2023-12-15 23:14:12,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:12,252 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 133 transitions. [2023-12-15 23:14:12,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 23:14:12,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:12,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:12,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:14:12,254 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:12,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:12,254 INFO L85 PathProgramCache]: Analyzing trace with hash 167424512, now seen corresponding path program 1 times [2023-12-15 23:14:12,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:12,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205113851] [2023-12-15 23:14:12,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:12,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:12,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:12,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205113851] [2023-12-15 23:14:12,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205113851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:12,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:12,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:12,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935165686] [2023-12-15 23:14:12,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:12,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:12,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:12,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:12,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:12,369 INFO L87 Difference]: Start difference. First operand 95 states and 133 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) [2023-12-15 23:14:12,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:12,409 INFO L93 Difference]: Finished difference Result 205 states and 313 transitions. [2023-12-15 23:14:12,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:12,410 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 [2023-12-15 23:14:12,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:12,411 INFO L225 Difference]: With dead ends: 205 [2023-12-15 23:14:12,411 INFO L226 Difference]: Without dead ends: 146 [2023-12-15 23:14:12,411 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 [2023-12-15 23:14:12,412 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 81 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:12,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 288 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:12,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-15 23:14:12,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2023-12-15 23:14:12,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4965034965034965) internal successors, (214), 143 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:12,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 214 transitions. [2023-12-15 23:14:12,419 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 214 transitions. Word has length 61 [2023-12-15 23:14:12,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:12,419 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 214 transitions. [2023-12-15 23:14:12,419 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) [2023-12-15 23:14:12,419 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 214 transitions. [2023-12-15 23:14:12,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 23:14:12,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:12,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:12,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:14:12,421 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:12,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:12,421 INFO L85 PathProgramCache]: Analyzing trace with hash -267550305, now seen corresponding path program 1 times [2023-12-15 23:14:12,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:12,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744709942] [2023-12-15 23:14:12,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:12,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:12,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:12,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744709942] [2023-12-15 23:14:12,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744709942] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:12,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:12,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:12,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224540057] [2023-12-15 23:14:12,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:12,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:12,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:12,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:12,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:12,487 INFO L87 Difference]: Start difference. First operand 144 states and 214 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) [2023-12-15 23:14:12,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:12,512 INFO L93 Difference]: Finished difference Result 344 states and 542 transitions. [2023-12-15 23:14:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:12,513 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 [2023-12-15 23:14:12,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:12,514 INFO L225 Difference]: With dead ends: 344 [2023-12-15 23:14:12,514 INFO L226 Difference]: Without dead ends: 236 [2023-12-15 23:14:12,515 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 [2023-12-15 23:14:12,515 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 77 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:12,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 285 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:12,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-15 23:14:12,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2023-12-15 23:14:12,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5493562231759657) internal successors, (361), 233 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 361 transitions. [2023-12-15 23:14:12,539 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 361 transitions. Word has length 61 [2023-12-15 23:14:12,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:12,540 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 361 transitions. [2023-12-15 23:14:12,541 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) [2023-12-15 23:14:12,541 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 361 transitions. [2023-12-15 23:14:12,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 23:14:12,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:12,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:12,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:14:12,542 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:12,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:12,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1476462402, now seen corresponding path program 1 times [2023-12-15 23:14:12,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:12,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144374572] [2023-12-15 23:14:12,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:12,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:12,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:12,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144374572] [2023-12-15 23:14:12,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144374572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:12,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:12,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:14:12,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555039514] [2023-12-15 23:14:12,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:12,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:14:12,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:12,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:14:12,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:14:12,662 INFO L87 Difference]: Start difference. First operand 234 states and 361 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:12,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:12,790 INFO L93 Difference]: Finished difference Result 1422 states and 2311 transitions. [2023-12-15 23:14:12,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:14:12,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-15 23:14:12,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:12,796 INFO L225 Difference]: With dead ends: 1422 [2023-12-15 23:14:12,796 INFO L226 Difference]: Without dead ends: 1224 [2023-12-15 23:14:12,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:14:12,803 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 1339 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:12,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 952 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:14:12,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-12-15 23:14:12,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 430. [2023-12-15 23:14:12,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.578088578088578) internal successors, (677), 429 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:12,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 677 transitions. [2023-12-15 23:14:12,838 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 677 transitions. Word has length 61 [2023-12-15 23:14:12,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:12,839 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 677 transitions. [2023-12-15 23:14:12,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:12,839 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 677 transitions. [2023-12-15 23:14:12,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 23:14:12,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:12,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:12,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:14:12,842 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:12,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:12,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1461246200, now seen corresponding path program 1 times [2023-12-15 23:14:12,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:12,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536994870] [2023-12-15 23:14:12,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:12,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:13,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:13,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536994870] [2023-12-15 23:14:13,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536994870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:13,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:13,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 23:14:13,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364177006] [2023-12-15 23:14:13,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:13,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 23:14:13,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:13,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 23:14:13,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:14:13,092 INFO L87 Difference]: Start difference. First operand 430 states and 677 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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) [2023-12-15 23:14:13,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:13,121 INFO L93 Difference]: Finished difference Result 456 states and 710 transitions. [2023-12-15 23:14:13,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:14:13,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 [2023-12-15 23:14:13,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:13,124 INFO L225 Difference]: With dead ends: 456 [2023-12-15 23:14:13,124 INFO L226 Difference]: Without dead ends: 454 [2023-12-15 23:14:13,125 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 [2023-12-15 23:14:13,127 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 2 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:13,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 631 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:13,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-12-15 23:14:13,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 446. [2023-12-15 23:14:13,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.557303370786517) internal successors, (693), 445 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 693 transitions. [2023-12-15 23:14:13,141 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 693 transitions. Word has length 62 [2023-12-15 23:14:13,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:13,141 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 693 transitions. [2023-12-15 23:14:13,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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) [2023-12-15 23:14:13,141 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 693 transitions. [2023-12-15 23:14:13,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 23:14:13,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:13,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:13,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:14:13,142 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:13,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:13,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1945006298, now seen corresponding path program 1 times [2023-12-15 23:14:13,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:13,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221053764] [2023-12-15 23:14:13,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:13,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:13,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:13,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221053764] [2023-12-15 23:14:13,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221053764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:13,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:13,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:13,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439523935] [2023-12-15 23:14:13,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:13,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:13,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:13,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:13,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:13,207 INFO L87 Difference]: Start difference. First operand 446 states and 693 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) [2023-12-15 23:14:13,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:13,226 INFO L93 Difference]: Finished difference Result 1210 states and 1911 transitions. [2023-12-15 23:14:13,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:13,226 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 [2023-12-15 23:14:13,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:13,229 INFO L225 Difference]: With dead ends: 1210 [2023-12-15 23:14:13,229 INFO L226 Difference]: Without dead ends: 800 [2023-12-15 23:14:13,230 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 [2023-12-15 23:14:13,232 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 62 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:13,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 223 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:13,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2023-12-15 23:14:13,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 798. [2023-12-15 23:14:13,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 1.5621079046424091) internal successors, (1245), 797 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:13,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1245 transitions. [2023-12-15 23:14:13,257 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1245 transitions. Word has length 63 [2023-12-15 23:14:13,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:13,258 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1245 transitions. [2023-12-15 23:14:13,258 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) [2023-12-15 23:14:13,258 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1245 transitions. [2023-12-15 23:14:13,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 23:14:13,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:13,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:13,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:14:13,259 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:13,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:13,259 INFO L85 PathProgramCache]: Analyzing trace with hash -157863225, now seen corresponding path program 1 times [2023-12-15 23:14:13,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:13,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422132241] [2023-12-15 23:14:13,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:13,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:13,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:13,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:13,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422132241] [2023-12-15 23:14:13,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422132241] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:13,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:13,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:13,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030097668] [2023-12-15 23:14:13,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:13,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:13,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:13,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:13,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:13,299 INFO L87 Difference]: Start difference. First operand 798 states and 1245 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) [2023-12-15 23:14:13,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:13,329 INFO L93 Difference]: Finished difference Result 1556 states and 2450 transitions. [2023-12-15 23:14:13,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:13,330 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 [2023-12-15 23:14:13,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:13,333 INFO L225 Difference]: With dead ends: 1556 [2023-12-15 23:14:13,334 INFO L226 Difference]: Without dead ends: 1146 [2023-12-15 23:14:13,334 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 [2023-12-15 23:14:13,336 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 85 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:13,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 298 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:13,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2023-12-15 23:14:13,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1144. [2023-12-15 23:14:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 1.5599300087489063) internal successors, (1783), 1143 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:13,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1783 transitions. [2023-12-15 23:14:13,362 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1783 transitions. Word has length 63 [2023-12-15 23:14:13,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:13,362 INFO L495 AbstractCegarLoop]: Abstraction has 1144 states and 1783 transitions. [2023-12-15 23:14:13,362 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) [2023-12-15 23:14:13,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1783 transitions. [2023-12-15 23:14:13,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-15 23:14:13,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:13,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:13,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:14:13,364 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:13,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:13,364 INFO L85 PathProgramCache]: Analyzing trace with hash -199705825, now seen corresponding path program 1 times [2023-12-15 23:14:13,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:13,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626429580] [2023-12-15 23:14:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:13,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:13,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:13,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626429580] [2023-12-15 23:14:13,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626429580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:13,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:13,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:13,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963694516] [2023-12-15 23:14:13,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:13,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:13,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:13,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:13,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:13,406 INFO L87 Difference]: Start difference. First operand 1144 states and 1783 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:13,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:13,449 INFO L93 Difference]: Finished difference Result 3164 states and 4937 transitions. [2023-12-15 23:14:13,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:13,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-15 23:14:13,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:13,455 INFO L225 Difference]: With dead ends: 3164 [2023-12-15 23:14:13,456 INFO L226 Difference]: Without dead ends: 2058 [2023-12-15 23:14:13,458 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 [2023-12-15 23:14:13,461 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 69 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:13,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 279 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:13,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2023-12-15 23:14:13,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 2056. [2023-12-15 23:14:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 2055 states have (on average 1.5411192214111922) internal successors, (3167), 2055 states have internal predecessors, (3167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 3167 transitions. [2023-12-15 23:14:13,509 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 3167 transitions. Word has length 64 [2023-12-15 23:14:13,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:13,510 INFO L495 AbstractCegarLoop]: Abstraction has 2056 states and 3167 transitions. [2023-12-15 23:14:13,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 3167 transitions. [2023-12-15 23:14:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-15 23:14:13,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:13,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:13,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:14:13,511 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:13,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:13,511 INFO L85 PathProgramCache]: Analyzing trace with hash -673434561, now seen corresponding path program 1 times [2023-12-15 23:14:13,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:13,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605208574] [2023-12-15 23:14:13,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:13,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:13,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:13,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605208574] [2023-12-15 23:14:13,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605208574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:13,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:13,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:13,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221268875] [2023-12-15 23:14:13,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:13,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:13,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:13,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:13,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:13,564 INFO L87 Difference]: Start difference. First operand 2056 states and 3167 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:13,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:13,619 INFO L93 Difference]: Finished difference Result 5708 states and 8753 transitions. [2023-12-15 23:14:13,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:13,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-15 23:14:13,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:13,629 INFO L225 Difference]: With dead ends: 5708 [2023-12-15 23:14:13,629 INFO L226 Difference]: Without dead ends: 3690 [2023-12-15 23:14:13,633 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 [2023-12-15 23:14:13,634 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 73 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:13,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 292 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:13,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2023-12-15 23:14:13,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3688. [2023-12-15 23:14:13,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 1.512069433143477) internal successors, (5575), 3687 states have internal predecessors, (5575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:13,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 5575 transitions. [2023-12-15 23:14:13,723 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 5575 transitions. Word has length 64 [2023-12-15 23:14:13,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:13,724 INFO L495 AbstractCegarLoop]: Abstraction has 3688 states and 5575 transitions. [2023-12-15 23:14:13,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:13,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 5575 transitions. [2023-12-15 23:14:13,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-15 23:14:13,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:13,725 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:13,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:14:13,726 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:13,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:13,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1327109602, now seen corresponding path program 1 times [2023-12-15 23:14:13,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:13,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084193904] [2023-12-15 23:14:13,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:13,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:13,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:13,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084193904] [2023-12-15 23:14:13,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084193904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:13,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:13,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:13,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698467883] [2023-12-15 23:14:13,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:13,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:13,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:13,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:13,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:13,823 INFO L87 Difference]: Start difference. First operand 3688 states and 5575 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:13,886 INFO L93 Difference]: Finished difference Result 7340 states and 11113 transitions. [2023-12-15 23:14:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:13,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-15 23:14:13,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:13,896 INFO L225 Difference]: With dead ends: 7340 [2023-12-15 23:14:13,896 INFO L226 Difference]: Without dead ends: 3690 [2023-12-15 23:14:13,899 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 [2023-12-15 23:14:13,900 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 67 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:13,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 284 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:13,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2023-12-15 23:14:13,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3688. [2023-12-15 23:14:14,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 1.4990507187415243) internal successors, (5527), 3687 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:14,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 5527 transitions. [2023-12-15 23:14:14,010 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 5527 transitions. Word has length 89 [2023-12-15 23:14:14,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:14,011 INFO L495 AbstractCegarLoop]: Abstraction has 3688 states and 5527 transitions. [2023-12-15 23:14:14,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:14,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 5527 transitions. [2023-12-15 23:14:14,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-15 23:14:14,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:14,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:14,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:14:14,013 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:14,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:14,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1833394947, now seen corresponding path program 1 times [2023-12-15 23:14:14,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:14,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626083094] [2023-12-15 23:14:14,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:14,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:14,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:14,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626083094] [2023-12-15 23:14:14,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626083094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:14,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:14,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:14,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115688907] [2023-12-15 23:14:14,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:14,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:14,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:14,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:14,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:14,102 INFO L87 Difference]: Start difference. First operand 3688 states and 5527 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:14,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:14,148 INFO L93 Difference]: Finished difference Result 5516 states and 8273 transitions. [2023-12-15 23:14:14,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:14,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-15 23:14:14,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:14,157 INFO L225 Difference]: With dead ends: 5516 [2023-12-15 23:14:14,157 INFO L226 Difference]: Without dead ends: 1866 [2023-12-15 23:14:14,161 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 [2023-12-15 23:14:14,162 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 61 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:14,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 265 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:14,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2023-12-15 23:14:14,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1864. [2023-12-15 23:14:14,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1863 states have (on average 1.4809447128287707) internal successors, (2759), 1863 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:14,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2759 transitions. [2023-12-15 23:14:14,206 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2759 transitions. Word has length 89 [2023-12-15 23:14:14,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:14,206 INFO L495 AbstractCegarLoop]: Abstraction has 1864 states and 2759 transitions. [2023-12-15 23:14:14,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2759 transitions. [2023-12-15 23:14:14,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-15 23:14:14,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:14,207 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:14,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:14:14,208 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:14,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:14,208 INFO L85 PathProgramCache]: Analyzing trace with hash -509450076, now seen corresponding path program 1 times [2023-12-15 23:14:14,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:14,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924611894] [2023-12-15 23:14:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:14,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:14,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:14,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924611894] [2023-12-15 23:14:14,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924611894] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:14:14,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820426937] [2023-12-15 23:14:14,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:14,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:14:14,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:14:14,664 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) [2023-12-15 23:14:14,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 23:14:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:14,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-15 23:14:14,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:14:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:14:14,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:14:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:14:15,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820426937] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:14:15,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:14:15,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 18 [2023-12-15 23:14:15,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032613990] [2023-12-15 23:14:15,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:14:15,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 23:14:15,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:15,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 23:14:15,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-12-15 23:14:15,239 INFO L87 Difference]: Start difference. First operand 1864 states and 2759 transitions. Second operand has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:17,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:17,180 INFO L93 Difference]: Finished difference Result 11560 states and 17051 transitions. [2023-12-15 23:14:17,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-15 23:14:17,180 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-15 23:14:17,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:17,217 INFO L225 Difference]: With dead ends: 11560 [2023-12-15 23:14:17,218 INFO L226 Difference]: Without dead ends: 10310 [2023-12-15 23:14:17,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=704, Invalid=2376, Unknown=0, NotChecked=0, Total=3080 [2023-12-15 23:14:17,222 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 3286 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3286 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:17,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3286 Valid, 1576 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 23:14:17,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10310 states. [2023-12-15 23:14:17,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10310 to 8712. [2023-12-15 23:14:17,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8712 states, 8711 states have (on average 1.4720468373321087) internal successors, (12823), 8711 states have internal predecessors, (12823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:17,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8712 states to 8712 states and 12823 transitions. [2023-12-15 23:14:17,458 INFO L78 Accepts]: Start accepts. Automaton has 8712 states and 12823 transitions. Word has length 89 [2023-12-15 23:14:17,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:17,458 INFO L495 AbstractCegarLoop]: Abstraction has 8712 states and 12823 transitions. [2023-12-15 23:14:17,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:17,458 INFO L276 IsEmpty]: Start isEmpty. Operand 8712 states and 12823 transitions. [2023-12-15 23:14:17,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-15 23:14:17,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:17,459 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:17,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 23:14:17,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 23:14:17,667 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:17,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:17,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1693774697, now seen corresponding path program 1 times [2023-12-15 23:14:17,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:17,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075059272] [2023-12-15 23:14:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:17,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 23:14:17,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:17,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075059272] [2023-12-15 23:14:17,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075059272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:17,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:17,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:14:17,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195184522] [2023-12-15 23:14:17,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:17,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:14:17,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:17,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:14:17,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:14:17,803 INFO L87 Difference]: Start difference. First operand 8712 states and 12823 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:18,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:18,261 INFO L93 Difference]: Finished difference Result 30156 states and 44725 transitions. [2023-12-15 23:14:18,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:14:18,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-15 23:14:18,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:18,297 INFO L225 Difference]: With dead ends: 30156 [2023-12-15 23:14:18,297 INFO L226 Difference]: Without dead ends: 25690 [2023-12-15 23:14:18,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:14:18,306 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 851 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:18,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1002 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:18,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25690 states. [2023-12-15 23:14:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25690 to 12992. [2023-12-15 23:14:18,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12992 states, 12991 states have (on average 1.4677084135170502) internal successors, (19067), 12991 states have internal predecessors, (19067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12992 states to 12992 states and 19067 transitions. [2023-12-15 23:14:18,716 INFO L78 Accepts]: Start accepts. Automaton has 12992 states and 19067 transitions. Word has length 90 [2023-12-15 23:14:18,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:18,716 INFO L495 AbstractCegarLoop]: Abstraction has 12992 states and 19067 transitions. [2023-12-15 23:14:18,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand 12992 states and 19067 transitions. [2023-12-15 23:14:18,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-15 23:14:18,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:18,718 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:18,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:14:18,718 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:18,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:18,718 INFO L85 PathProgramCache]: Analyzing trace with hash -468780697, now seen corresponding path program 1 times [2023-12-15 23:14:18,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:18,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092151285] [2023-12-15 23:14:18,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:18,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 23:14:18,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:18,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092151285] [2023-12-15 23:14:18,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092151285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:18,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:18,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:14:18,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358030967] [2023-12-15 23:14:18,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:18,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:14:18,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:18,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:14:18,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:14:18,813 INFO L87 Difference]: Start difference. First operand 12992 states and 19067 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:19,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:19,326 INFO L93 Difference]: Finished difference Result 34436 states and 50969 transitions. [2023-12-15 23:14:19,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:14:19,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-15 23:14:19,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:19,373 INFO L225 Difference]: With dead ends: 34436 [2023-12-15 23:14:19,373 INFO L226 Difference]: Without dead ends: 29970 [2023-12-15 23:14:19,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:14:19,387 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 941 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:19,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 887 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:19,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29970 states. [2023-12-15 23:14:19,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29970 to 17272. [2023-12-15 23:14:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17272 states, 17271 states have (on average 1.4655202362341497) internal successors, (25311), 17271 states have internal predecessors, (25311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17272 states to 17272 states and 25311 transitions. [2023-12-15 23:14:19,990 INFO L78 Accepts]: Start accepts. Automaton has 17272 states and 25311 transitions. Word has length 90 [2023-12-15 23:14:19,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:19,990 INFO L495 AbstractCegarLoop]: Abstraction has 17272 states and 25311 transitions. [2023-12-15 23:14:19,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:19,990 INFO L276 IsEmpty]: Start isEmpty. Operand 17272 states and 25311 transitions. [2023-12-15 23:14:19,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-15 23:14:19,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:19,992 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:19,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:14:19,992 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:19,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:19,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1399755363, now seen corresponding path program 1 times [2023-12-15 23:14:19,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:19,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285169213] [2023-12-15 23:14:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:19,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 23:14:20,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:20,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285169213] [2023-12-15 23:14:20,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285169213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:20,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:20,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:14:20,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433051278] [2023-12-15 23:14:20,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:20,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:14:20,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:20,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:14:20,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:14:20,098 INFO L87 Difference]: Start difference. First operand 17272 states and 25311 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:20,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:20,772 INFO L93 Difference]: Finished difference Result 38716 states and 57213 transitions. [2023-12-15 23:14:20,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:14:20,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-15 23:14:20,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:20,818 INFO L225 Difference]: With dead ends: 38716 [2023-12-15 23:14:20,819 INFO L226 Difference]: Without dead ends: 34250 [2023-12-15 23:14:20,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:14:20,826 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 895 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:20,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 974 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:14:20,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34250 states. [2023-12-15 23:14:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34250 to 21552. [2023-12-15 23:14:21,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21552 states, 21551 states have (on average 1.4642011971602247) internal successors, (31555), 21551 states have internal predecessors, (31555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21552 states to 21552 states and 31555 transitions. [2023-12-15 23:14:21,424 INFO L78 Accepts]: Start accepts. Automaton has 21552 states and 31555 transitions. Word has length 90 [2023-12-15 23:14:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:21,424 INFO L495 AbstractCegarLoop]: Abstraction has 21552 states and 31555 transitions. [2023-12-15 23:14:21,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:21,424 INFO L276 IsEmpty]: Start isEmpty. Operand 21552 states and 31555 transitions. [2023-12-15 23:14:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-15 23:14:21,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:21,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:21,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:14:21,426 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:21,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:21,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2024255077, now seen corresponding path program 1 times [2023-12-15 23:14:21,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:21,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330274201] [2023-12-15 23:14:21,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:21,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:21,549 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 23:14:21,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:21,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330274201] [2023-12-15 23:14:21,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330274201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:21,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:21,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:14:21,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780625420] [2023-12-15 23:14:21,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:21,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:14:21,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:21,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:14:21,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:14:21,550 INFO L87 Difference]: Start difference. First operand 21552 states and 31555 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2023-12-15 23:14:22,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:22,403 INFO L93 Difference]: Finished difference Result 42996 states and 63457 transitions. [2023-12-15 23:14:22,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:14:22,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) Word has length 90 [2023-12-15 23:14:22,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:22,463 INFO L225 Difference]: With dead ends: 42996 [2023-12-15 23:14:22,463 INFO L226 Difference]: Without dead ends: 38530 [2023-12-15 23:14:22,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:14:22,476 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 784 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:22,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1084 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:14:22,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38530 states. [2023-12-15 23:14:23,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38530 to 25832. [2023-12-15 23:14:23,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25832 states, 25831 states have (on average 1.4633192675467461) internal successors, (37799), 25831 states have internal predecessors, (37799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:23,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25832 states to 25832 states and 37799 transitions. [2023-12-15 23:14:23,293 INFO L78 Accepts]: Start accepts. Automaton has 25832 states and 37799 transitions. Word has length 90 [2023-12-15 23:14:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:23,294 INFO L495 AbstractCegarLoop]: Abstraction has 25832 states and 37799 transitions. [2023-12-15 23:14:23,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2023-12-15 23:14:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 25832 states and 37799 transitions. [2023-12-15 23:14:23,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-15 23:14:23,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:23,296 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:23,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 23:14:23,296 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:23,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:23,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1801917206, now seen corresponding path program 1 times [2023-12-15 23:14:23,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:23,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551439765] [2023-12-15 23:14:23,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:23,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:23,414 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:14:23,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:23,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551439765] [2023-12-15 23:14:23,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551439765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:23,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:23,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:14:23,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385139967] [2023-12-15 23:14:23,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:23,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:14:23,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:23,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:14:23,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:14:23,415 INFO L87 Difference]: Start difference. First operand 25832 states and 37799 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:24,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:24,189 INFO L93 Difference]: Finished difference Result 45428 states and 66921 transitions. [2023-12-15 23:14:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:14:24,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-15 23:14:24,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:24,241 INFO L225 Difference]: With dead ends: 45428 [2023-12-15 23:14:24,242 INFO L226 Difference]: Without dead ends: 42146 [2023-12-15 23:14:24,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:14:24,251 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 849 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:24,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1150 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:14:24,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42146 states. [2023-12-15 23:14:25,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42146 to 29448. [2023-12-15 23:14:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29448 states, 29447 states have (on average 1.4621183821781505) internal successors, (43055), 29447 states have internal predecessors, (43055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:25,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29448 states to 29448 states and 43055 transitions. [2023-12-15 23:14:25,299 INFO L78 Accepts]: Start accepts. Automaton has 29448 states and 43055 transitions. Word has length 90 [2023-12-15 23:14:25,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:25,300 INFO L495 AbstractCegarLoop]: Abstraction has 29448 states and 43055 transitions. [2023-12-15 23:14:25,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:25,300 INFO L276 IsEmpty]: Start isEmpty. Operand 29448 states and 43055 transitions. [2023-12-15 23:14:25,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-15 23:14:25,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:25,307 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:25,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:14:25,307 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:25,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:25,307 INFO L85 PathProgramCache]: Analyzing trace with hash 43054361, now seen corresponding path program 1 times [2023-12-15 23:14:25,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:25,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082192536] [2023-12-15 23:14:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:25,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:25,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:25,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082192536] [2023-12-15 23:14:25,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082192536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:25,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:25,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:25,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836301808] [2023-12-15 23:14:25,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:25,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:25,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:25,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:25,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:25,373 INFO L87 Difference]: Start difference. First operand 29448 states and 43055 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:25,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:25,659 INFO L93 Difference]: Finished difference Result 41046 states and 59725 transitions. [2023-12-15 23:14:25,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:25,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-15 23:14:25,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:25,672 INFO L225 Difference]: With dead ends: 41046 [2023-12-15 23:14:25,673 INFO L226 Difference]: Without dead ends: 11636 [2023-12-15 23:14:25,697 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 [2023-12-15 23:14:25,697 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 47 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:25,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 261 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:25,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11636 states. [2023-12-15 23:14:26,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11636 to 11214. [2023-12-15 23:14:26,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11214 states, 11213 states have (on average 1.4291447427093553) internal successors, (16025), 11213 states have internal predecessors, (16025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:26,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11214 states to 11214 states and 16025 transitions. [2023-12-15 23:14:26,035 INFO L78 Accepts]: Start accepts. Automaton has 11214 states and 16025 transitions. Word has length 93 [2023-12-15 23:14:26,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:26,036 INFO L495 AbstractCegarLoop]: Abstraction has 11214 states and 16025 transitions. [2023-12-15 23:14:26,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:26,036 INFO L276 IsEmpty]: Start isEmpty. Operand 11214 states and 16025 transitions. [2023-12-15 23:14:26,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-15 23:14:26,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:26,038 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:26,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 23:14:26,038 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:26,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:26,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2120153594, now seen corresponding path program 1 times [2023-12-15 23:14:26,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:26,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859672897] [2023-12-15 23:14:26,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:26,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:26,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:26,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859672897] [2023-12-15 23:14:26,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859672897] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:14:26,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347632586] [2023-12-15 23:14:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:26,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:14:26,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:14:26,430 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) [2023-12-15 23:14:26,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 23:14:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:26,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 23:14:26,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:14:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:27,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:14:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:28,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347632586] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:14:28,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:14:28,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 26 [2023-12-15 23:14:28,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582523591] [2023-12-15 23:14:28,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:14:28,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-15 23:14:28,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:28,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-15 23:14:28,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2023-12-15 23:14:28,467 INFO L87 Difference]: Start difference. First operand 11214 states and 16025 transitions. Second operand has 27 states, 27 states have (on average 8.88888888888889) internal successors, (240), 26 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:33,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:33,596 INFO L93 Difference]: Finished difference Result 67992 states and 96392 transitions. [2023-12-15 23:14:33,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-15 23:14:33,597 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.88888888888889) internal successors, (240), 26 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-15 23:14:33,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:33,665 INFO L225 Difference]: With dead ends: 67992 [2023-12-15 23:14:33,666 INFO L226 Difference]: Without dead ends: 56848 [2023-12-15 23:14:33,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3115 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1703, Invalid=8197, Unknown=0, NotChecked=0, Total=9900 [2023-12-15 23:14:33,690 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 6511 mSDsluCounter, 2139 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6511 SdHoareTripleChecker+Valid, 2280 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:33,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6511 Valid, 2280 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 23:14:33,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56848 states. [2023-12-15 23:14:34,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56848 to 33462. [2023-12-15 23:14:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33462 states, 33461 states have (on average 1.4189952481993964) internal successors, (47481), 33461 states have internal predecessors, (47481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33462 states to 33462 states and 47481 transitions. [2023-12-15 23:14:34,760 INFO L78 Accepts]: Start accepts. Automaton has 33462 states and 47481 transitions. Word has length 93 [2023-12-15 23:14:34,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:34,760 INFO L495 AbstractCegarLoop]: Abstraction has 33462 states and 47481 transitions. [2023-12-15 23:14:34,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.88888888888889) internal successors, (240), 26 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:34,760 INFO L276 IsEmpty]: Start isEmpty. Operand 33462 states and 47481 transitions. [2023-12-15 23:14:34,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-15 23:14:34,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:34,762 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:34,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 23:14:34,967 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 [2023-12-15 23:14:34,968 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:34,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:34,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1103480558, now seen corresponding path program 1 times [2023-12-15 23:14:34,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:34,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854022970] [2023-12-15 23:14:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:34,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:35,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:35,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854022970] [2023-12-15 23:14:35,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854022970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:14:35,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:14:35,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:14:35,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895517448] [2023-12-15 23:14:35,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:14:35,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:14:35,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:35,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:14:35,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:14:35,014 INFO L87 Difference]: Start difference. First operand 33462 states and 47481 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:36,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:36,466 INFO L93 Difference]: Finished difference Result 96366 states and 136228 transitions. [2023-12-15 23:14:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:14:36,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-15 23:14:36,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:36,535 INFO L225 Difference]: With dead ends: 96366 [2023-12-15 23:14:36,535 INFO L226 Difference]: Without dead ends: 63025 [2023-12-15 23:14:36,555 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 [2023-12-15 23:14:36,557 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 66 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:36,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 252 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:14:36,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63025 states. [2023-12-15 23:14:38,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63025 to 63023. [2023-12-15 23:14:38,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63023 states, 63022 states have (on average 1.398828980356066) internal successors, (88157), 63022 states have internal predecessors, (88157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63023 states to 63023 states and 88157 transitions. [2023-12-15 23:14:38,515 INFO L78 Accepts]: Start accepts. Automaton has 63023 states and 88157 transitions. Word has length 94 [2023-12-15 23:14:38,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:14:38,515 INFO L495 AbstractCegarLoop]: Abstraction has 63023 states and 88157 transitions. [2023-12-15 23:14:38,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 63023 states and 88157 transitions. [2023-12-15 23:14:38,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-15 23:14:38,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:14:38,519 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:14:38,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 23:14:38,519 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:14:38,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:14:38,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1051143942, now seen corresponding path program 1 times [2023-12-15 23:14:38,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:14:38,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184979204] [2023-12-15 23:14:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:38,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:14:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:38,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:14:38,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184979204] [2023-12-15 23:14:38,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184979204] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:14:38,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546730068] [2023-12-15 23:14:38,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:14:38,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:14:38,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:14:38,835 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) [2023-12-15 23:14:38,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 23:14:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:14:38,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 23:14:38,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:14:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:39,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:14:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:14:40,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546730068] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:14:40,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:14:40,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-15 23:14:40,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787908083] [2023-12-15 23:14:40,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:14:40,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-15 23:14:40,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:14:40,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-15 23:14:40,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2023-12-15 23:14:40,160 INFO L87 Difference]: Start difference. First operand 63023 states and 88157 transitions. Second operand has 23 states, 23 states have (on average 11.73913043478261) internal successors, (270), 22 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:14:52,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:14:52,633 INFO L93 Difference]: Finished difference Result 637904 states and 869700 transitions. [2023-12-15 23:14:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-12-15 23:14:52,634 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.73913043478261) internal successors, (270), 22 states have internal predecessors, (270), 0 states have call successors, (0), 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 94 [2023-12-15 23:14:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:14:53,826 INFO L225 Difference]: With dead ends: 637904 [2023-12-15 23:14:53,826 INFO L226 Difference]: Without dead ends: 578050 [2023-12-15 23:14:54,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3022 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1769, Invalid=7933, Unknown=0, NotChecked=0, Total=9702 [2023-12-15 23:14:54,190 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 5180 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5180 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 23:14:54,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5180 Valid, 1853 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 23:14:54,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578050 states. [2023-12-15 23:15:06,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578050 to 371252. [2023-12-15 23:15:06,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371252 states, 371251 states have (on average 1.3721067418000221) internal successors, (509396), 371251 states have internal predecessors, (509396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:15:07,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371252 states to 371252 states and 509396 transitions. [2023-12-15 23:15:07,998 INFO L78 Accepts]: Start accepts. Automaton has 371252 states and 509396 transitions. Word has length 94 [2023-12-15 23:15:07,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:15:07,998 INFO L495 AbstractCegarLoop]: Abstraction has 371252 states and 509396 transitions. [2023-12-15 23:15:07,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.73913043478261) internal successors, (270), 22 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:15:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand 371252 states and 509396 transitions. [2023-12-15 23:15:08,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-15 23:15:08,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:15:08,019 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:15:08,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 23:15:08,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:15:08,223 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:15:08,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:15:08,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1498300571, now seen corresponding path program 1 times [2023-12-15 23:15:08,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:15:08,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139685294] [2023-12-15 23:15:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:15:08,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:15:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:15:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:15:08,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:15:08,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139685294] [2023-12-15 23:15:08,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139685294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:15:08,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:15:08,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:15:08,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570266391] [2023-12-15 23:15:08,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:15:08,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:15:08,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:15:08,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:15:08,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:15:08,272 INFO L87 Difference]: Start difference. First operand 371252 states and 509396 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 23:15:10,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:15:10,099 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 [2023-12-15 23:15:10,100 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 56 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:15:10,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 290 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:15:10,102 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:15:10,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 23:15:10,103 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (371252states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (86137 states constructed, input type IntersectNwa). [2023-12-15 23:15:10,109 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] [2023-12-15 23:15:10,111 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:15:10,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:15:10 BoogieIcfgContainer [2023-12-15 23:15:10,117 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:15:10,117 INFO L158 Benchmark]: Toolchain (without parser) took 59745.10ms. Allocated memory was 330.3MB in the beginning and 7.2GB in the end (delta: 6.9GB). Free memory was 292.0MB in the beginning and 5.2GB in the end (delta: -4.9GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-15 23:15:10,117 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 196.1MB. Free memory is still 148.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:15:10,117 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.73ms. Allocated memory is still 330.3MB. Free memory was 291.5MB in the beginning and 275.3MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-15 23:15:10,117 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.59ms. Allocated memory is still 330.3MB. Free memory was 275.3MB in the beginning and 272.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:15:10,118 INFO L158 Benchmark]: Boogie Preprocessor took 58.66ms. Allocated memory is still 330.3MB. Free memory was 272.2MB in the beginning and 268.6MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:15:10,118 INFO L158 Benchmark]: RCFGBuilder took 535.06ms. Allocated memory is still 330.3MB. Free memory was 268.6MB in the beginning and 237.6MB in the end (delta: 31.0MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-12-15 23:15:10,118 INFO L158 Benchmark]: TraceAbstraction took 58821.96ms. Allocated memory was 330.3MB in the beginning and 7.2GB in the end (delta: 6.9GB). Free memory was 236.9MB in the beginning and 5.2GB in the end (delta: -4.9GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-15 23:15:10,122 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2023-12-15 23:15:10,138 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 Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 196.1MB. Free memory is still 148.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 278.73ms. Allocated memory is still 330.3MB. Free memory was 291.5MB in the beginning and 275.3MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.59ms. Allocated memory is still 330.3MB. Free memory was 275.3MB in the beginning and 272.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.66ms. Allocated memory is still 330.3MB. Free memory was 272.2MB in the beginning and 268.6MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 535.06ms. Allocated memory is still 330.3MB. Free memory was 268.6MB in the beginning and 237.6MB in the end (delta: 31.0MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * TraceAbstraction took 58821.96ms. Allocated memory was 330.3MB in the beginning and 7.2GB in the end (delta: 6.9GB). Free memory was 236.9MB in the beginning and 5.2GB in the end (delta: -4.9GB). Peak memory consumption was 2.2GB. 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: 476]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 476). Cancelled while NwaCegarLoop was constructing difference of abstraction (371252states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (86137 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 97 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.8s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 29.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21382 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21382 mSDsluCounter, 16020 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12064 mSDsCounter, 222 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5621 IncrementalHoareTripleChecker+Invalid, 5843 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 222 mSolverCounterUnsat, 3956 mSDtfsCounter, 5621 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 869 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7052 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=371252occurred in iteration=22, InterpolantAutomatonStates: 279, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 21.3s AutomataMinimizationTime, 22 MinimizatonAttempts, 296514 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 2020 NumberOfCodeBlocks, 2020 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2267 ConstructedInterpolants, 0 QuantifiedInterpolants, 19236 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1064 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 29 InterpolantComputations, 20 PerfectInterpolantSequences, 227/289 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