/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 13:00:54,050 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 13:00:54,121 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 13:00:54,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 13:00:54,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 13:00:54,147 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 13:00:54,148 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 13:00:54,148 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 13:00:54,148 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 13:00:54,149 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 13:00:54,150 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 13:00:54,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 13:00:54,150 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 13:00:54,150 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 13:00:54,151 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 13:00:54,151 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 13:00:54,151 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 13:00:54,151 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 13:00:54,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 13:00:54,152 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 13:00:54,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 13:00:54,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 13:00:54,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 13:00:54,154 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 13:00:54,154 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 13:00:54,154 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 13:00:54,154 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 13:00:54,155 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 13:00:54,155 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 13:00:54,155 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 13:00:54,156 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 13:00:54,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 13:00:54,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 13:00:54,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 13:00:54,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 13:00:54,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 13:00:54,157 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 13:00:54,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 13:00:54,157 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 13:00:54,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 13:00:54,157 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 13:00:54,157 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 13:00:54,157 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 13:00:54,157 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 13:00:54,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 13:00:54,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 13:00:54,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 13:00:54,382 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 13:00:54,383 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 13:00:54,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c [2023-12-20 13:00:55,527 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 13:00:55,850 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 13:00:55,851 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c [2023-12-20 13:00:55,871 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26f7bc5a/f53387d242d149e4981c27de517bb1f5/FLAG2e4bc316a [2023-12-20 13:00:55,882 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26f7bc5a/f53387d242d149e4981c27de517bb1f5 [2023-12-20 13:00:55,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 13:00:55,885 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 13:00:55,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 13:00:55,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 13:00:55,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 13:00:55,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:00:55" (1/1) ... [2023-12-20 13:00:55,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@444aee97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:55, skipping insertion in model container [2023-12-20 13:00:55,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:00:55" (1/1) ... [2023-12-20 13:00:55,976 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 13:00:56,239 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c[8616,8629] [2023-12-20 13:00:56,271 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c[10953,10966] [2023-12-20 13:00:56,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 13:00:56,814 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 13:00:56,844 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c[8616,8629] [2023-12-20 13:00:56,848 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c[10953,10966] [2023-12-20 13:00:57,105 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 13:00:57,124 INFO L206 MainTranslator]: Completed translation [2023-12-20 13:00:57,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:57 WrapperNode [2023-12-20 13:00:57,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 13:00:57,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 13:00:57,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 13:00:57,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 13:00:57,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:57" (1/1) ... [2023-12-20 13:00:57,178 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:57" (1/1) ... [2023-12-20 13:00:57,479 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5035 [2023-12-20 13:00:57,479 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 13:00:57,480 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 13:00:57,480 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 13:00:57,480 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 13:00:57,498 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:57" (1/1) ... [2023-12-20 13:00:57,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:57" (1/1) ... [2023-12-20 13:00:57,543 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:57" (1/1) ... [2023-12-20 13:00:57,654 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 13:00:57,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:57" (1/1) ... [2023-12-20 13:00:57,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:57" (1/1) ... [2023-12-20 13:00:57,770 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:57" (1/1) ... [2023-12-20 13:00:57,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:57" (1/1) ... [2023-12-20 13:00:57,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:57" (1/1) ... [2023-12-20 13:00:57,845 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:57" (1/1) ... [2023-12-20 13:00:57,876 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 13:00:57,877 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 13:00:57,878 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 13:00:57,878 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 13:00:57,878 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:57" (1/1) ... [2023-12-20 13:00:57,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 13:00:57,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:00:57,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 13:00:57,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 13:00:57,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 13:00:57,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 13:00:57,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 13:00:57,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 13:00:57,995 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 13:00:57,996 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 13:01:00,901 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 13:01:00,941 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 13:01:00,941 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 13:01:00,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:01:00 BoogieIcfgContainer [2023-12-20 13:01:00,942 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 13:01:00,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 13:01:00,943 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 13:01:00,945 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 13:01:00,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:00:55" (1/3) ... [2023-12-20 13:01:00,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a1688f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:01:00, skipping insertion in model container [2023-12-20 13:01:00,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:57" (2/3) ... [2023-12-20 13:01:00,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a1688f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:01:00, skipping insertion in model container [2023-12-20 13:01:00,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:01:00" (3/3) ... [2023-12-20 13:01:00,947 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c [2023-12-20 13:01:00,957 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 13:01:00,958 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 13:01:00,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 13:01:00,996 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;@4fd521da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 13:01:00,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 13:01:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:01,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-20 13:01:01,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:01,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:01,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:01,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:01,010 INFO L85 PathProgramCache]: Analyzing trace with hash -915082471, now seen corresponding path program 1 times [2023-12-20 13:01:01,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:01,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791998406] [2023-12-20 13:01:01,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:01,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:01,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:01,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791998406] [2023-12-20 13:01:01,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791998406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:01,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:01,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 13:01:01,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305853691] [2023-12-20 13:01:01,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:01,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 13:01:01,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:01,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 13:01:01,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 13:01:01,149 INFO L87 Difference]: Start difference. First operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:01,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:01,210 INFO L93 Difference]: Finished difference Result 1613 states and 3180 transitions. [2023-12-20 13:01:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 13:01:01,223 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-20 13:01:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:01,233 INFO L225 Difference]: With dead ends: 1613 [2023-12-20 13:01:01,233 INFO L226 Difference]: Without dead ends: 816 [2023-12-20 13:01:01,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 13:01:01,240 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:01,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1545 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:01,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-20 13:01:01,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-12-20 13:01:01,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.898034398034398) internal successors, (1545), 815 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:01,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1545 transitions. [2023-12-20 13:01:01,283 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1545 transitions. Word has length 19 [2023-12-20 13:01:01,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:01,283 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1545 transitions. [2023-12-20 13:01:01,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:01,283 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1545 transitions. [2023-12-20 13:01:01,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-20 13:01:01,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:01,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:01,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 13:01:01,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:01,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:01,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2100021147, now seen corresponding path program 1 times [2023-12-20 13:01:01,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:01,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471589064] [2023-12-20 13:01:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:01,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:01,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:01,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:01,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471589064] [2023-12-20 13:01:01,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471589064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:01,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:01,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:01:01,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143556289] [2023-12-20 13:01:01,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:01,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:01:01,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:01,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:01:01,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:01:01,428 INFO L87 Difference]: Start difference. First operand 816 states and 1545 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:01,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:01,478 INFO L93 Difference]: Finished difference Result 889 states and 1660 transitions. [2023-12-20 13:01:01,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:01:01,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-20 13:01:01,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:01,482 INFO L225 Difference]: With dead ends: 889 [2023-12-20 13:01:01,482 INFO L226 Difference]: Without dead ends: 851 [2023-12-20 13:01:01,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:01:01,483 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 55 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4592 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:01,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4592 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:01,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-12-20 13:01:01,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 816. [2023-12-20 13:01:01,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.8697788697788698) internal successors, (1522), 815 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:01,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1522 transitions. [2023-12-20 13:01:01,494 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1522 transitions. Word has length 19 [2023-12-20 13:01:01,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:01,495 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1522 transitions. [2023-12-20 13:01:01,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:01,495 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1522 transitions. [2023-12-20 13:01:01,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-20 13:01:01,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:01,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:01,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 13:01:01,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:01,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:01,496 INFO L85 PathProgramCache]: Analyzing trace with hash 244787946, now seen corresponding path program 1 times [2023-12-20 13:01:01,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:01,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704111679] [2023-12-20 13:01:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:01,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:01,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:01,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:01,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704111679] [2023-12-20 13:01:01,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704111679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:01,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:01,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 13:01:01,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425060801] [2023-12-20 13:01:01,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:01,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:01,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:01,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:01,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:01,533 INFO L87 Difference]: Start difference. First operand 816 states and 1522 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:04,434 INFO L93 Difference]: Finished difference Result 2320 states and 4395 transitions. [2023-12-20 13:01:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:04,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-20 13:01:04,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:04,439 INFO L225 Difference]: With dead ends: 2320 [2023-12-20 13:01:04,439 INFO L226 Difference]: Without dead ends: 1567 [2023-12-20 13:01:04,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:04,441 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 865 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:04,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 555 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 13:01:04,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2023-12-20 13:01:04,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1567. [2023-12-20 13:01:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1565 states have (on average 1.5980830670926518) internal successors, (2501), 1566 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2501 transitions. [2023-12-20 13:01:04,468 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2501 transitions. Word has length 19 [2023-12-20 13:01:04,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:04,468 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2501 transitions. [2023-12-20 13:01:04,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2501 transitions. [2023-12-20 13:01:04,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 13:01:04,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:04,469 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] [2023-12-20 13:01:04,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 13:01:04,470 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:04,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:04,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1286109718, now seen corresponding path program 1 times [2023-12-20 13:01:04,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:04,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124979328] [2023-12-20 13:01:04,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:04,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:04,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:04,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124979328] [2023-12-20 13:01:04,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124979328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:04,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:04,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:01:04,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894987589] [2023-12-20 13:01:04,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:04,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:01:04,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:04,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:01:04,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:01:04,579 INFO L87 Difference]: Start difference. First operand 1567 states and 2501 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:04,699 INFO L93 Difference]: Finished difference Result 1847 states and 2949 transitions. [2023-12-20 13:01:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 13:01:04,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-20 13:01:04,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:04,705 INFO L225 Difference]: With dead ends: 1847 [2023-12-20 13:01:04,705 INFO L226 Difference]: Without dead ends: 1812 [2023-12-20 13:01:04,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:01:04,712 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 6246 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6246 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:04,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6246 Valid, 2155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:01:04,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2023-12-20 13:01:04,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1600. [2023-12-20 13:01:04,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1598 states have (on average 1.5982478097622028) internal successors, (2554), 1599 states have internal predecessors, (2554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2554 transitions. [2023-12-20 13:01:04,738 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2554 transitions. Word has length 41 [2023-12-20 13:01:04,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:04,738 INFO L495 AbstractCegarLoop]: Abstraction has 1600 states and 2554 transitions. [2023-12-20 13:01:04,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2554 transitions. [2023-12-20 13:01:04,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-20 13:01:04,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:04,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:04,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 13:01:04,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:04,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:04,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1122752986, now seen corresponding path program 1 times [2023-12-20 13:01:04,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:04,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130230096] [2023-12-20 13:01:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:04,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:04,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:04,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130230096] [2023-12-20 13:01:04,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130230096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:04,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:04,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:04,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755352427] [2023-12-20 13:01:04,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:04,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:04,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:04,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:04,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:04,799 INFO L87 Difference]: Start difference. First operand 1600 states and 2554 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:04,823 INFO L93 Difference]: Finished difference Result 1725 states and 2753 transitions. [2023-12-20 13:01:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:04,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-20 13:01:04,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:04,828 INFO L225 Difference]: With dead ends: 1725 [2023-12-20 13:01:04,828 INFO L226 Difference]: Without dead ends: 1657 [2023-12-20 13:01:04,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:04,829 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:04,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:04,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2023-12-20 13:01:04,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1655. [2023-12-20 13:01:04,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1653 states have (on average 1.5970961887477313) internal successors, (2640), 1654 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2640 transitions. [2023-12-20 13:01:04,849 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2640 transitions. Word has length 43 [2023-12-20 13:01:04,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:04,849 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 2640 transitions. [2023-12-20 13:01:04,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2640 transitions. [2023-12-20 13:01:04,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-20 13:01:04,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:04,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:04,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 13:01:04,850 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:04,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:04,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1120608034, now seen corresponding path program 1 times [2023-12-20 13:01:04,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:04,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469297204] [2023-12-20 13:01:04,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:04,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:04,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:04,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469297204] [2023-12-20 13:01:04,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469297204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:04,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:04,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:01:04,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170250878] [2023-12-20 13:01:04,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:04,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:01:04,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:04,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:01:04,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:01:04,971 INFO L87 Difference]: Start difference. First operand 1655 states and 2640 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:05,073 INFO L93 Difference]: Finished difference Result 1780 states and 2836 transitions. [2023-12-20 13:01:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:01:05,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-20 13:01:05,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:05,078 INFO L225 Difference]: With dead ends: 1780 [2023-12-20 13:01:05,078 INFO L226 Difference]: Without dead ends: 1657 [2023-12-20 13:01:05,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 13:01:05,079 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 1488 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:05,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1719 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:05,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2023-12-20 13:01:05,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1655. [2023-12-20 13:01:05,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1653 states have (on average 1.5958862673926195) internal successors, (2638), 1654 states have internal predecessors, (2638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2638 transitions. [2023-12-20 13:01:05,102 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2638 transitions. Word has length 43 [2023-12-20 13:01:05,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:05,103 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 2638 transitions. [2023-12-20 13:01:05,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2638 transitions. [2023-12-20 13:01:05,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-20 13:01:05,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:05,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:05,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 13:01:05,104 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:05,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:05,104 INFO L85 PathProgramCache]: Analyzing trace with hash -507494279, now seen corresponding path program 1 times [2023-12-20 13:01:05,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:05,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174147126] [2023-12-20 13:01:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:05,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:05,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:05,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174147126] [2023-12-20 13:01:05,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174147126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:05,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:05,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:01:05,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786037330] [2023-12-20 13:01:05,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:05,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:01:05,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:05,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:01:05,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:01:05,192 INFO L87 Difference]: Start difference. First operand 1655 states and 2638 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:05,222 INFO L93 Difference]: Finished difference Result 1663 states and 2647 transitions. [2023-12-20 13:01:05,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:01:05,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-20 13:01:05,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:05,227 INFO L225 Difference]: With dead ends: 1663 [2023-12-20 13:01:05,227 INFO L226 Difference]: Without dead ends: 1661 [2023-12-20 13:01:05,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:01:05,228 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:05,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4546 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:05,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2023-12-20 13:01:05,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1659. [2023-12-20 13:01:05,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1657 states have (on average 1.5938442969221485) internal successors, (2641), 1658 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2641 transitions. [2023-12-20 13:01:05,253 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2641 transitions. Word has length 44 [2023-12-20 13:01:05,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:05,253 INFO L495 AbstractCegarLoop]: Abstraction has 1659 states and 2641 transitions. [2023-12-20 13:01:05,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2641 transitions. [2023-12-20 13:01:05,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-20 13:01:05,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:05,254 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] [2023-12-20 13:01:05,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 13:01:05,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:05,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:05,254 INFO L85 PathProgramCache]: Analyzing trace with hash 106173278, now seen corresponding path program 1 times [2023-12-20 13:01:05,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:05,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841103686] [2023-12-20 13:01:05,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:05,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:05,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:05,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841103686] [2023-12-20 13:01:05,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841103686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:05,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:05,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:05,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791399251] [2023-12-20 13:01:05,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:05,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:05,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:05,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:05,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:05,282 INFO L87 Difference]: Start difference. First operand 1659 states and 2641 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:05,305 INFO L93 Difference]: Finished difference Result 1797 states and 2854 transitions. [2023-12-20 13:01:05,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:05,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-20 13:01:05,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:05,309 INFO L225 Difference]: With dead ends: 1797 [2023-12-20 13:01:05,310 INFO L226 Difference]: Without dead ends: 1725 [2023-12-20 13:01:05,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:05,310 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:05,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:05,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2023-12-20 13:01:05,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1723. [2023-12-20 13:01:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1721 states have (on average 1.590935502614759) internal successors, (2738), 1722 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2738 transitions. [2023-12-20 13:01:05,333 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2738 transitions. Word has length 45 [2023-12-20 13:01:05,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:05,333 INFO L495 AbstractCegarLoop]: Abstraction has 1723 states and 2738 transitions. [2023-12-20 13:01:05,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2738 transitions. [2023-12-20 13:01:05,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-20 13:01:05,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:05,334 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] [2023-12-20 13:01:05,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 13:01:05,334 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:05,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:05,334 INFO L85 PathProgramCache]: Analyzing trace with hash -479538850, now seen corresponding path program 1 times [2023-12-20 13:01:05,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:05,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069234409] [2023-12-20 13:01:05,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:05,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:05,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:05,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069234409] [2023-12-20 13:01:05,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069234409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:05,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:05,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:05,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166925600] [2023-12-20 13:01:05,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:05,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:05,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:05,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:05,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:05,361 INFO L87 Difference]: Start difference. First operand 1723 states and 2738 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:05,431 INFO L93 Difference]: Finished difference Result 2077 states and 3278 transitions. [2023-12-20 13:01:05,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:05,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-20 13:01:05,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:05,464 INFO L225 Difference]: With dead ends: 2077 [2023-12-20 13:01:05,466 INFO L226 Difference]: Without dead ends: 1888 [2023-12-20 13:01:05,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:05,471 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 1480 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:05,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:05,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2023-12-20 13:01:05,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1886. [2023-12-20 13:01:05,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1884 states have (on average 1.5817409766454353) internal successors, (2980), 1885 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2980 transitions. [2023-12-20 13:01:05,522 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2980 transitions. Word has length 45 [2023-12-20 13:01:05,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:05,522 INFO L495 AbstractCegarLoop]: Abstraction has 1886 states and 2980 transitions. [2023-12-20 13:01:05,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2980 transitions. [2023-12-20 13:01:05,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-20 13:01:05,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:05,523 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] [2023-12-20 13:01:05,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 13:01:05,523 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:05,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:05,524 INFO L85 PathProgramCache]: Analyzing trace with hash 409194590, now seen corresponding path program 1 times [2023-12-20 13:01:05,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:05,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95534250] [2023-12-20 13:01:05,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:05,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:05,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:05,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95534250] [2023-12-20 13:01:05,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95534250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:05,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:05,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:05,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20127530] [2023-12-20 13:01:05,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:05,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:05,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:05,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:05,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:05,565 INFO L87 Difference]: Start difference. First operand 1886 states and 2980 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:05,597 INFO L93 Difference]: Finished difference Result 2542 states and 3962 transitions. [2023-12-20 13:01:05,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:05,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-20 13:01:05,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:05,603 INFO L225 Difference]: With dead ends: 2542 [2023-12-20 13:01:05,603 INFO L226 Difference]: Without dead ends: 2190 [2023-12-20 13:01:05,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:05,605 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:05,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:05,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2023-12-20 13:01:05,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 2188. [2023-12-20 13:01:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2186 states have (on average 1.5626715462031107) internal successors, (3416), 2187 states have internal predecessors, (3416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3416 transitions. [2023-12-20 13:01:05,642 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3416 transitions. Word has length 45 [2023-12-20 13:01:05,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:05,642 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 3416 transitions. [2023-12-20 13:01:05,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3416 transitions. [2023-12-20 13:01:05,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-20 13:01:05,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:05,643 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] [2023-12-20 13:01:05,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 13:01:05,643 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:05,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:05,644 INFO L85 PathProgramCache]: Analyzing trace with hash 146117214, now seen corresponding path program 1 times [2023-12-20 13:01:05,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:05,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410688820] [2023-12-20 13:01:05,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:05,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:05,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:05,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410688820] [2023-12-20 13:01:05,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410688820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:05,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:05,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:05,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285484856] [2023-12-20 13:01:05,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:05,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:05,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:05,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:05,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:05,672 INFO L87 Difference]: Start difference. First operand 2188 states and 3416 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:05,713 INFO L93 Difference]: Finished difference Result 3400 states and 5186 transitions. [2023-12-20 13:01:05,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:05,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-20 13:01:05,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:05,721 INFO L225 Difference]: With dead ends: 3400 [2023-12-20 13:01:05,721 INFO L226 Difference]: Without dead ends: 2746 [2023-12-20 13:01:05,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:05,722 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1482 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:05,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:05,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2023-12-20 13:01:05,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2744. [2023-12-20 13:01:05,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2744 states, 2742 states have (on average 1.5288110867979576) internal successors, (4192), 2743 states have internal predecessors, (4192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 4192 transitions. [2023-12-20 13:01:05,773 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 4192 transitions. Word has length 45 [2023-12-20 13:01:05,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:05,773 INFO L495 AbstractCegarLoop]: Abstraction has 2744 states and 4192 transitions. [2023-12-20 13:01:05,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 4192 transitions. [2023-12-20 13:01:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 13:01:05,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:05,774 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:05,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 13:01:05,775 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:05,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:05,775 INFO L85 PathProgramCache]: Analyzing trace with hash -879880138, now seen corresponding path program 1 times [2023-12-20 13:01:05,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:05,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121367612] [2023-12-20 13:01:05,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:05,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:01:05,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:05,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121367612] [2023-12-20 13:01:05,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121367612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:05,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:05,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:01:05,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942948836] [2023-12-20 13:01:05,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:05,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:01:05,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:05,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:01:05,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:01:05,855 INFO L87 Difference]: Start difference. First operand 2744 states and 4192 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:06,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:06,033 INFO L93 Difference]: Finished difference Result 7506 states and 11053 transitions. [2023-12-20 13:01:06,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:01:06,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 13:01:06,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:06,053 INFO L225 Difference]: With dead ends: 7506 [2023-12-20 13:01:06,053 INFO L226 Difference]: Without dead ends: 6640 [2023-12-20 13:01:06,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 13:01:06,056 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4635 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4635 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:06,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4635 Valid, 3299 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:06,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2023-12-20 13:01:06,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 3784. [2023-12-20 13:01:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 3782 states have (on average 1.4997355896351137) internal successors, (5672), 3783 states have internal predecessors, (5672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:06,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5672 transitions. [2023-12-20 13:01:06,168 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5672 transitions. Word has length 61 [2023-12-20 13:01:06,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:06,168 INFO L495 AbstractCegarLoop]: Abstraction has 3784 states and 5672 transitions. [2023-12-20 13:01:06,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:06,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5672 transitions. [2023-12-20 13:01:06,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 13:01:06,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:06,169 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:06,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 13:01:06,170 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:06,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:06,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1465592266, now seen corresponding path program 1 times [2023-12-20 13:01:06,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:06,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498726953] [2023-12-20 13:01:06,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:06,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:06,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 13:01:06,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:06,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498726953] [2023-12-20 13:01:06,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498726953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:06,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:06,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:01:06,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935496387] [2023-12-20 13:01:06,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:06,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:01:06,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:06,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:01:06,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:01:06,244 INFO L87 Difference]: Start difference. First operand 3784 states and 5672 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:06,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:06,396 INFO L93 Difference]: Finished difference Result 8714 states and 12781 transitions. [2023-12-20 13:01:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:01:06,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 13:01:06,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:06,408 INFO L225 Difference]: With dead ends: 8714 [2023-12-20 13:01:06,408 INFO L226 Difference]: Without dead ends: 7504 [2023-12-20 13:01:06,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 13:01:06,411 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4670 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4670 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:06,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4670 Valid, 3317 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:06,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7504 states. [2023-12-20 13:01:06,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7504 to 5424. [2023-12-20 13:01:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5422 states have (on average 1.4754703061600885) internal successors, (8000), 5423 states have internal predecessors, (8000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 8000 transitions. [2023-12-20 13:01:06,530 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 8000 transitions. Word has length 61 [2023-12-20 13:01:06,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:06,530 INFO L495 AbstractCegarLoop]: Abstraction has 5424 states and 8000 transitions. [2023-12-20 13:01:06,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:06,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 8000 transitions. [2023-12-20 13:01:06,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 13:01:06,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:06,531 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:06,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 13:01:06,531 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:06,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:06,532 INFO L85 PathProgramCache]: Analyzing trace with hash -576858826, now seen corresponding path program 1 times [2023-12-20 13:01:06,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:06,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589596900] [2023-12-20 13:01:06,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:06,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 13:01:06,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:06,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589596900] [2023-12-20 13:01:06,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589596900] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:06,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:06,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:01:06,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430081865] [2023-12-20 13:01:06,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:06,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:01:06,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:06,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:01:06,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:01:06,619 INFO L87 Difference]: Start difference. First operand 5424 states and 8000 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:06,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:06,832 INFO L93 Difference]: Finished difference Result 9922 states and 14501 transitions. [2023-12-20 13:01:06,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:01:06,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 13:01:06,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:06,842 INFO L225 Difference]: With dead ends: 9922 [2023-12-20 13:01:06,842 INFO L226 Difference]: Without dead ends: 8712 [2023-12-20 13:01:06,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 13:01:06,845 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4667 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:06,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3318 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:06,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8712 states. [2023-12-20 13:01:06,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8712 to 6632. [2023-12-20 13:01:06,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6632 states, 6630 states have (on average 1.4660633484162895) internal successors, (9720), 6631 states have internal predecessors, (9720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:06,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 9720 transitions. [2023-12-20 13:01:06,975 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 9720 transitions. Word has length 61 [2023-12-20 13:01:06,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:06,975 INFO L495 AbstractCegarLoop]: Abstraction has 6632 states and 9720 transitions. [2023-12-20 13:01:06,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:06,976 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 9720 transitions. [2023-12-20 13:01:06,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 13:01:06,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:06,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:06,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 13:01:06,977 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:06,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:06,977 INFO L85 PathProgramCache]: Analyzing trace with hash -839936202, now seen corresponding path program 1 times [2023-12-20 13:01:06,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:06,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179363032] [2023-12-20 13:01:06,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:06,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:07,048 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 13:01:07,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:07,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179363032] [2023-12-20 13:01:07,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179363032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:07,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:07,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:01:07,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504696349] [2023-12-20 13:01:07,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:07,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:01:07,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:07,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:01:07,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:01:07,049 INFO L87 Difference]: Start difference. First operand 6632 states and 9720 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:07,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:07,234 INFO L93 Difference]: Finished difference Result 11130 states and 16221 transitions. [2023-12-20 13:01:07,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:01:07,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 13:01:07,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:07,247 INFO L225 Difference]: With dead ends: 11130 [2023-12-20 13:01:07,247 INFO L226 Difference]: Without dead ends: 9920 [2023-12-20 13:01:07,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 13:01:07,252 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 4639 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4639 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:07,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4639 Valid, 3339 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:07,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9920 states. [2023-12-20 13:01:07,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9920 to 7840. [2023-12-20 13:01:07,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.459556009186017) internal successors, (11440), 7839 states have internal predecessors, (11440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:07,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11440 transitions. [2023-12-20 13:01:07,421 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11440 transitions. Word has length 61 [2023-12-20 13:01:07,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:07,421 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11440 transitions. [2023-12-20 13:01:07,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:07,422 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11440 transitions. [2023-12-20 13:01:07,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 13:01:07,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:07,423 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] [2023-12-20 13:01:07,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 13:01:07,423 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:07,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:07,423 INFO L85 PathProgramCache]: Analyzing trace with hash -593577456, now seen corresponding path program 1 times [2023-12-20 13:01:07,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:07,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987231533] [2023-12-20 13:01:07,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:07,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:07,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:07,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987231533] [2023-12-20 13:01:07,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987231533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:07,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:07,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:07,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110368094] [2023-12-20 13:01:07,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:07,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:07,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:07,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:07,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:07,476 INFO L87 Difference]: Start difference. First operand 7840 states and 11440 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:07,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:07,587 INFO L93 Difference]: Finished difference Result 14148 states and 20434 transitions. [2023-12-20 13:01:07,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:07,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 13:01:07,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:07,597 INFO L225 Difference]: With dead ends: 14148 [2023-12-20 13:01:07,597 INFO L226 Difference]: Without dead ends: 7842 [2023-12-20 13:01:07,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:07,604 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 37 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:07,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3053 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:07,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7842 states. [2023-12-20 13:01:07,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7842 to 7840. [2023-12-20 13:01:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.443735646848686) internal successors, (11316), 7839 states have internal predecessors, (11316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:07,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11316 transitions. [2023-12-20 13:01:07,826 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11316 transitions. Word has length 62 [2023-12-20 13:01:07,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:07,826 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11316 transitions. [2023-12-20 13:01:07,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:07,826 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11316 transitions. [2023-12-20 13:01:07,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 13:01:07,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:07,827 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] [2023-12-20 13:01:07,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 13:01:07,827 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:07,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:07,827 INFO L85 PathProgramCache]: Analyzing trace with hash 153695742, now seen corresponding path program 1 times [2023-12-20 13:01:07,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:07,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505626887] [2023-12-20 13:01:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:07,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:07,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:07,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505626887] [2023-12-20 13:01:07,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505626887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:07,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:07,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:07,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848073771] [2023-12-20 13:01:07,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:07,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:07,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:07,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:07,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:07,915 INFO L87 Difference]: Start difference. First operand 7840 states and 11316 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:07,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:07,994 INFO L93 Difference]: Finished difference Result 10236 states and 14723 transitions. [2023-12-20 13:01:07,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:07,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 13:01:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:08,001 INFO L225 Difference]: With dead ends: 10236 [2023-12-20 13:01:08,001 INFO L226 Difference]: Without dead ends: 3930 [2023-12-20 13:01:08,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:08,007 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 31 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:08,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3050 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:08,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2023-12-20 13:01:08,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3923. [2023-12-20 13:01:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3921 states have (on average 1.479979597041571) internal successors, (5803), 3922 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:08,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 5803 transitions. [2023-12-20 13:01:08,077 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 5803 transitions. Word has length 63 [2023-12-20 13:01:08,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:08,077 INFO L495 AbstractCegarLoop]: Abstraction has 3923 states and 5803 transitions. [2023-12-20 13:01:08,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:08,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 5803 transitions. [2023-12-20 13:01:08,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 13:01:08,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:08,078 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:08,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 13:01:08,078 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:08,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:08,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1807172254, now seen corresponding path program 1 times [2023-12-20 13:01:08,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:08,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544438250] [2023-12-20 13:01:08,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:08,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:08,132 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:08,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:08,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544438250] [2023-12-20 13:01:08,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544438250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:08,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:08,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:08,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944092429] [2023-12-20 13:01:08,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:08,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:08,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:08,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:08,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:08,134 INFO L87 Difference]: Start difference. First operand 3923 states and 5803 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:08,173 INFO L93 Difference]: Finished difference Result 5115 states and 7477 transitions. [2023-12-20 13:01:08,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:08,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 13:01:08,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:08,178 INFO L225 Difference]: With dead ends: 5115 [2023-12-20 13:01:08,178 INFO L226 Difference]: Without dead ends: 2737 [2023-12-20 13:01:08,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:08,182 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 33 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:08,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3029 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:08,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2023-12-20 13:01:08,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2735. [2023-12-20 13:01:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2733 states have (on average 1.5034760336626418) internal successors, (4109), 2734 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:08,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4109 transitions. [2023-12-20 13:01:08,228 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4109 transitions. Word has length 64 [2023-12-20 13:01:08,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:08,228 INFO L495 AbstractCegarLoop]: Abstraction has 2735 states and 4109 transitions. [2023-12-20 13:01:08,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:08,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4109 transitions. [2023-12-20 13:01:08,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 13:01:08,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:08,229 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] [2023-12-20 13:01:08,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 13:01:08,230 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:08,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:08,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1518156628, now seen corresponding path program 1 times [2023-12-20 13:01:08,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:08,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952175389] [2023-12-20 13:01:08,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:08,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:08,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:08,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952175389] [2023-12-20 13:01:08,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952175389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:08,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:08,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:08,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642671354] [2023-12-20 13:01:08,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:08,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:08,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:08,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:08,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:08,310 INFO L87 Difference]: Start difference. First operand 2735 states and 4109 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:08,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:08,342 INFO L93 Difference]: Finished difference Result 3333 states and 4936 transitions. [2023-12-20 13:01:08,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:08,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-20 13:01:08,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:08,346 INFO L225 Difference]: With dead ends: 3333 [2023-12-20 13:01:08,346 INFO L226 Difference]: Without dead ends: 2143 [2023-12-20 13:01:08,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:08,348 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 30 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:08,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3014 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:08,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2023-12-20 13:01:08,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2141. [2023-12-20 13:01:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2139 states have (on average 1.5301542776998598) internal successors, (3273), 2140 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:08,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 3273 transitions. [2023-12-20 13:01:08,386 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 3273 transitions. Word has length 66 [2023-12-20 13:01:08,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:08,386 INFO L495 AbstractCegarLoop]: Abstraction has 2141 states and 3273 transitions. [2023-12-20 13:01:08,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:08,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 3273 transitions. [2023-12-20 13:01:08,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 13:01:08,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:08,387 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] [2023-12-20 13:01:08,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 13:01:08,388 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:08,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:08,388 INFO L85 PathProgramCache]: Analyzing trace with hash 312352826, now seen corresponding path program 1 times [2023-12-20 13:01:08,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:08,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887817480] [2023-12-20 13:01:08,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:08,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:09,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:09,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887817480] [2023-12-20 13:01:09,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887817480] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:01:09,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091929268] [2023-12-20 13:01:09,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:09,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:09,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:01:09,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:01:09,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 13:01:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:09,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 13:01:09,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:01:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:01:09,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:01:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:01:09,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091929268] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:01:09,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:01:09,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-20 13:01:09,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544324611] [2023-12-20 13:01:09,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:01:09,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 13:01:09,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:09,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 13:01:09,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-20 13:01:09,896 INFO L87 Difference]: Start difference. First operand 2141 states and 3273 transitions. Second operand has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:12,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:12,024 INFO L93 Difference]: Finished difference Result 6296 states and 8766 transitions. [2023-12-20 13:01:12,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-20 13:01:12,025 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-20 13:01:12,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:12,032 INFO L225 Difference]: With dead ends: 6296 [2023-12-20 13:01:12,032 INFO L226 Difference]: Without dead ends: 5700 [2023-12-20 13:01:12,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 13:01:12,035 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 10018 mSDsluCounter, 6292 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10018 SdHoareTripleChecker+Valid, 7794 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:12,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10018 Valid, 7794 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:01:12,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2023-12-20 13:01:12,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5372. [2023-12-20 13:01:12,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5372 states, 5370 states have (on average 1.3782122905027934) internal successors, (7401), 5371 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:12,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 7401 transitions. [2023-12-20 13:01:12,178 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 7401 transitions. Word has length 68 [2023-12-20 13:01:12,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:12,178 INFO L495 AbstractCegarLoop]: Abstraction has 5372 states and 7401 transitions. [2023-12-20 13:01:12,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:12,178 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 7401 transitions. [2023-12-20 13:01:12,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 13:01:12,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:12,179 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] [2023-12-20 13:01:12,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 13:01:12,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:12,385 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:12,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:12,386 INFO L85 PathProgramCache]: Analyzing trace with hash 424413204, now seen corresponding path program 1 times [2023-12-20 13:01:12,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:12,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51389672] [2023-12-20 13:01:12,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:12,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:13,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:13,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51389672] [2023-12-20 13:01:13,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51389672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:01:13,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137171058] [2023-12-20 13:01:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:13,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:13,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:01:13,681 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:01:13,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 13:01:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:13,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:01:13,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:01:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:14,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:01:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:14,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137171058] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:01:14,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:01:14,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-12-20 13:01:14,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300443182] [2023-12-20 13:01:14,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:01:14,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 13:01:14,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:14,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 13:01:14,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 13:01:14,946 INFO L87 Difference]: Start difference. First operand 5372 states and 7401 transitions. Second operand has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:17,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:17,618 INFO L93 Difference]: Finished difference Result 19899 states and 26145 transitions. [2023-12-20 13:01:17,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 13:01:17,619 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-20 13:01:17,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:17,640 INFO L225 Difference]: With dead ends: 19899 [2023-12-20 13:01:17,640 INFO L226 Difference]: Without dead ends: 16209 [2023-12-20 13:01:17,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1203, Invalid=5277, Unknown=0, NotChecked=0, Total=6480 [2023-12-20 13:01:17,649 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 23081 mSDsluCounter, 9434 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23081 SdHoareTripleChecker+Valid, 10932 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:17,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23081 Valid, 10932 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 13:01:17,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16209 states. [2023-12-20 13:01:18,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16209 to 14521. [2023-12-20 13:01:18,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14521 states, 14519 states have (on average 1.3162063502996073) internal successors, (19110), 14520 states have internal predecessors, (19110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:18,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14521 states to 14521 states and 19110 transitions. [2023-12-20 13:01:18,069 INFO L78 Accepts]: Start accepts. Automaton has 14521 states and 19110 transitions. Word has length 69 [2023-12-20 13:01:18,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:18,069 INFO L495 AbstractCegarLoop]: Abstraction has 14521 states and 19110 transitions. [2023-12-20 13:01:18,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:18,070 INFO L276 IsEmpty]: Start isEmpty. Operand 14521 states and 19110 transitions. [2023-12-20 13:01:18,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 13:01:18,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:18,070 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:18,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 13:01:18,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-20 13:01:18,275 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:18,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:18,275 INFO L85 PathProgramCache]: Analyzing trace with hash 103866210, now seen corresponding path program 1 times [2023-12-20 13:01:18,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:18,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694007566] [2023-12-20 13:01:18,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:18,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:18,494 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:18,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:18,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694007566] [2023-12-20 13:01:18,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694007566] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:01:18,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677577249] [2023-12-20 13:01:18,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:18,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:18,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:01:18,496 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:01:18,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 13:01:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:18,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:01:18,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:01:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:19,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:01:19,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:19,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677577249] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:01:19,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:01:19,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-20 13:01:19,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529130663] [2023-12-20 13:01:19,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:01:19,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 13:01:19,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:19,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 13:01:19,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-12-20 13:01:19,775 INFO L87 Difference]: Start difference. First operand 14521 states and 19110 transitions. Second operand has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:22,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:22,001 INFO L93 Difference]: Finished difference Result 40651 states and 52133 transitions. [2023-12-20 13:01:22,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 13:01:22,003 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-20 13:01:22,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:22,036 INFO L225 Difference]: With dead ends: 40651 [2023-12-20 13:01:22,037 INFO L226 Difference]: Without dead ends: 28103 [2023-12-20 13:01:22,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1196, Invalid=4810, Unknown=0, NotChecked=0, Total=6006 [2023-12-20 13:01:22,056 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 14514 mSDsluCounter, 8003 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14514 SdHoareTripleChecker+Valid, 9505 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:22,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14514 Valid, 9505 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 13:01:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28103 states. [2023-12-20 13:01:22,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28103 to 21817. [2023-12-20 13:01:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21817 states, 21815 states have (on average 1.2853082741233097) internal successors, (28039), 21816 states have internal predecessors, (28039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:22,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21817 states to 21817 states and 28039 transitions. [2023-12-20 13:01:22,718 INFO L78 Accepts]: Start accepts. Automaton has 21817 states and 28039 transitions. Word has length 69 [2023-12-20 13:01:22,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:22,718 INFO L495 AbstractCegarLoop]: Abstraction has 21817 states and 28039 transitions. [2023-12-20 13:01:22,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:22,718 INFO L276 IsEmpty]: Start isEmpty. Operand 21817 states and 28039 transitions. [2023-12-20 13:01:22,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-20 13:01:22,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:22,720 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:22,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 13:01:22,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:22,925 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:22,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:22,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1578698104, now seen corresponding path program 1 times [2023-12-20 13:01:22,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:22,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212440419] [2023-12-20 13:01:22,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:22,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:23,427 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:23,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:23,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212440419] [2023-12-20 13:01:23,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212440419] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:01:23,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627739642] [2023-12-20 13:01:23,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:23,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:23,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:01:23,429 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:01:23,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 13:01:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:23,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:01:23,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:01:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:23,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:01:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:24,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627739642] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:01:24,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:01:24,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 30 [2023-12-20 13:01:24,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945539213] [2023-12-20 13:01:24,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:01:24,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 13:01:24,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:24,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 13:01:24,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2023-12-20 13:01:24,689 INFO L87 Difference]: Start difference. First operand 21817 states and 28039 transitions. Second operand has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:27,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:27,882 INFO L93 Difference]: Finished difference Result 62024 states and 77651 transitions. [2023-12-20 13:01:27,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-20 13:01:27,882 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-20 13:01:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:27,974 INFO L225 Difference]: With dead ends: 62024 [2023-12-20 13:01:27,974 INFO L226 Difference]: Without dead ends: 43265 [2023-12-20 13:01:27,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1092, Invalid=5228, Unknown=0, NotChecked=0, Total=6320 [2023-12-20 13:01:27,994 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 18627 mSDsluCounter, 16587 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18627 SdHoareTripleChecker+Valid, 18083 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:27,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18627 Valid, 18083 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:01:28,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43265 states. [2023-12-20 13:01:28,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43265 to 35253. [2023-12-20 13:01:29,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35253 states, 35251 states have (on average 1.2553686420243397) internal successors, (44253), 35252 states have internal predecessors, (44253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:29,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35253 states to 35253 states and 44253 transitions. [2023-12-20 13:01:29,051 INFO L78 Accepts]: Start accepts. Automaton has 35253 states and 44253 transitions. Word has length 70 [2023-12-20 13:01:29,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:29,051 INFO L495 AbstractCegarLoop]: Abstraction has 35253 states and 44253 transitions. [2023-12-20 13:01:29,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:29,052 INFO L276 IsEmpty]: Start isEmpty. Operand 35253 states and 44253 transitions. [2023-12-20 13:01:29,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 13:01:29,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:29,053 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:29,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 13:01:29,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:29,258 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:29,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:29,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2129294422, now seen corresponding path program 1 times [2023-12-20 13:01:29,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:29,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546345880] [2023-12-20 13:01:29,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:29,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:29,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:29,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546345880] [2023-12-20 13:01:29,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546345880] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:01:29,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222451403] [2023-12-20 13:01:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:29,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:29,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:01:29,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:01:29,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 13:01:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:29,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 13:01:29,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:01:31,129 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:31,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:01:32,914 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:32,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222451403] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:01:32,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:01:32,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 19] total 44 [2023-12-20 13:01:32,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697175573] [2023-12-20 13:01:32,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:01:32,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-20 13:01:32,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:32,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-20 13:01:32,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 13:01:32,918 INFO L87 Difference]: Start difference. First operand 35253 states and 44253 transitions. Second operand has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:44,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:44,639 INFO L93 Difference]: Finished difference Result 91691 states and 115365 transitions. [2023-12-20 13:01:44,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-12-20 13:01:44,640 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 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 71 [2023-12-20 13:01:44,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:44,726 INFO L225 Difference]: With dead ends: 91691 [2023-12-20 13:01:44,726 INFO L226 Difference]: Without dead ends: 78325 [2023-12-20 13:01:44,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7571 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=4162, Invalid=18790, Unknown=0, NotChecked=0, Total=22952 [2023-12-20 13:01:44,742 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 22077 mSDsluCounter, 20856 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22077 SdHoareTripleChecker+Valid, 22422 SdHoareTripleChecker+Invalid, 2322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:44,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22077 Valid, 22422 Invalid, 2322 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 13:01:44,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78325 states. [2023-12-20 13:01:46,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78325 to 31137. [2023-12-20 13:01:46,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31137 states, 31135 states have (on average 1.2546009314276538) internal successors, (39062), 31136 states have internal predecessors, (39062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:46,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31137 states to 31137 states and 39062 transitions. [2023-12-20 13:01:46,057 INFO L78 Accepts]: Start accepts. Automaton has 31137 states and 39062 transitions. Word has length 71 [2023-12-20 13:01:46,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:46,057 INFO L495 AbstractCegarLoop]: Abstraction has 31137 states and 39062 transitions. [2023-12-20 13:01:46,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:46,058 INFO L276 IsEmpty]: Start isEmpty. Operand 31137 states and 39062 transitions. [2023-12-20 13:01:46,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 13:01:46,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:46,059 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:46,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 13:01:46,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-20 13:01:46,260 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:46,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:46,261 INFO L85 PathProgramCache]: Analyzing trace with hash 387450162, now seen corresponding path program 1 times [2023-12-20 13:01:46,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:46,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159775112] [2023-12-20 13:01:46,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:46,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:46,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:46,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159775112] [2023-12-20 13:01:46,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159775112] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:01:46,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198403348] [2023-12-20 13:01:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:46,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:46,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:01:46,709 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:01:46,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 13:01:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:46,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 13:01:46,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:01:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:47,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:01:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:48,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198403348] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:01:48,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:01:48,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 33 [2023-12-20 13:01:48,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197886566] [2023-12-20 13:01:48,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:01:48,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 13:01:48,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:48,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 13:01:48,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 13:01:48,625 INFO L87 Difference]: Start difference. First operand 31137 states and 39062 transitions. Second operand has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:50,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:50,453 INFO L93 Difference]: Finished difference Result 43705 states and 54074 transitions. [2023-12-20 13:01:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-20 13:01:50,454 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 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 71 [2023-12-20 13:01:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:50,478 INFO L225 Difference]: With dead ends: 43705 [2023-12-20 13:01:50,478 INFO L226 Difference]: Without dead ends: 30337 [2023-12-20 13:01:50,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=467, Invalid=1885, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 13:01:50,485 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 7981 mSDsluCounter, 12140 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7981 SdHoareTripleChecker+Valid, 13634 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:50,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7981 Valid, 13634 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 13:01:50,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30337 states. [2023-12-20 13:01:51,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30337 to 25828. [2023-12-20 13:01:51,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25828 states, 25826 states have (on average 1.2564469914040115) internal successors, (32449), 25827 states have internal predecessors, (32449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25828 states to 25828 states and 32449 transitions. [2023-12-20 13:01:51,581 INFO L78 Accepts]: Start accepts. Automaton has 25828 states and 32449 transitions. Word has length 71 [2023-12-20 13:01:51,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:51,582 INFO L495 AbstractCegarLoop]: Abstraction has 25828 states and 32449 transitions. [2023-12-20 13:01:51,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:51,582 INFO L276 IsEmpty]: Start isEmpty. Operand 25828 states and 32449 transitions. [2023-12-20 13:01:51,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 13:01:51,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:51,583 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:51,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 13:01:51,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:51,789 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:51,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:51,789 INFO L85 PathProgramCache]: Analyzing trace with hash 497746538, now seen corresponding path program 1 times [2023-12-20 13:01:51,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:51,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602185505] [2023-12-20 13:01:51,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:51,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:53,376 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:53,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:53,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602185505] [2023-12-20 13:01:53,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602185505] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:01:53,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166005890] [2023-12-20 13:01:53,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:53,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:53,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:01:53,378 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:01:53,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 13:01:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:53,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:01:53,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:01:54,407 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:54,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:01:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:55,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166005890] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:01:55,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:01:55,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13, 13] total 47 [2023-12-20 13:01:55,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981817403] [2023-12-20 13:01:55,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:01:55,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-20 13:01:55,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:55,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-20 13:01:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1999, Unknown=0, NotChecked=0, Total=2162 [2023-12-20 13:01:55,396 INFO L87 Difference]: Start difference. First operand 25828 states and 32449 transitions. Second operand has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:16,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:16,401 INFO L93 Difference]: Finished difference Result 62054 states and 76809 transitions. [2023-12-20 13:02:16,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-12-20 13:02:16,401 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-20 13:02:16,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:16,448 INFO L225 Difference]: With dead ends: 62054 [2023-12-20 13:02:16,448 INFO L226 Difference]: Without dead ends: 50557 [2023-12-20 13:02:16,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17684 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=9044, Invalid=40462, Unknown=0, NotChecked=0, Total=49506 [2023-12-20 13:02:16,459 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 22652 mSDsluCounter, 26684 mSDsCounter, 0 mSdLazyCounter, 4563 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22652 SdHoareTripleChecker+Valid, 28297 SdHoareTripleChecker+Invalid, 4709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 4563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:16,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22652 Valid, 28297 Invalid, 4709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [146 Valid, 4563 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 13:02:16,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50557 states. [2023-12-20 13:02:17,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50557 to 22353. [2023-12-20 13:02:17,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22353 states, 22351 states have (on average 1.2597199230459488) internal successors, (28156), 22352 states have internal predecessors, (28156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:17,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22353 states to 22353 states and 28156 transitions. [2023-12-20 13:02:17,607 INFO L78 Accepts]: Start accepts. Automaton has 22353 states and 28156 transitions. Word has length 72 [2023-12-20 13:02:17,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:17,607 INFO L495 AbstractCegarLoop]: Abstraction has 22353 states and 28156 transitions. [2023-12-20 13:02:17,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:17,607 INFO L276 IsEmpty]: Start isEmpty. Operand 22353 states and 28156 transitions. [2023-12-20 13:02:17,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 13:02:17,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:17,609 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:17,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 13:02:17,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:02:17,814 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:17,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:17,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1693383730, now seen corresponding path program 1 times [2023-12-20 13:02:17,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:17,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60768352] [2023-12-20 13:02:17,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:17,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:17,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:17,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60768352] [2023-12-20 13:02:17,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60768352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:02:17,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:02:17,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:02:17,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388011532] [2023-12-20 13:02:17,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:02:17,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:02:17,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:17,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:02:17,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:02:17,925 INFO L87 Difference]: Start difference. First operand 22353 states and 28156 transitions. Second operand has 4 states, 4 states have (on average 23.5) 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) [2023-12-20 13:02:21,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:21,344 INFO L93 Difference]: Finished difference Result 24612 states and 31555 transitions. [2023-12-20 13:02:21,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 13:02:21,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) 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 [2023-12-20 13:02:21,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:21,362 INFO L225 Difference]: With dead ends: 24612 [2023-12-20 13:02:21,362 INFO L226 Difference]: Without dead ends: 23108 [2023-12-20 13:02:21,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 13:02:21,365 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 1447 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:21,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 1798 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 13:02:21,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23108 states. [2023-12-20 13:02:22,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23108 to 23104. [2023-12-20 13:02:22,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23104 states, 23102 states have (on average 1.2515366634923384) internal successors, (28913), 23103 states have internal predecessors, (28913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:22,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23104 states to 23104 states and 28913 transitions. [2023-12-20 13:02:22,308 INFO L78 Accepts]: Start accepts. Automaton has 23104 states and 28913 transitions. Word has length 94 [2023-12-20 13:02:22,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:22,308 INFO L495 AbstractCegarLoop]: Abstraction has 23104 states and 28913 transitions. [2023-12-20 13:02:22,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) 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) [2023-12-20 13:02:22,308 INFO L276 IsEmpty]: Start isEmpty. Operand 23104 states and 28913 transitions. [2023-12-20 13:02:22,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-20 13:02:22,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:22,312 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:22,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 13:02:22,312 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:22,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:22,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1625481862, now seen corresponding path program 1 times [2023-12-20 13:02:22,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:22,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422125396] [2023-12-20 13:02:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:22,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:22,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:22,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422125396] [2023-12-20 13:02:22,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422125396] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:02:22,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145904602] [2023-12-20 13:02:22,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:22,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:02:22,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:02:22,980 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:02:22,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 13:02:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:23,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:02:23,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:02:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:23,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:02:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:24,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145904602] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:02:24,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:02:24,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-20 13:02:24,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636697112] [2023-12-20 13:02:24,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:02:24,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 13:02:24,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:24,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 13:02:24,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-12-20 13:02:24,995 INFO L87 Difference]: Start difference. First operand 23104 states and 28913 transitions. Second operand has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:26,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:26,574 INFO L93 Difference]: Finished difference Result 35052 states and 43772 transitions. [2023-12-20 13:02:26,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 13:02:26,574 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-20 13:02:26,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:26,599 INFO L225 Difference]: With dead ends: 35052 [2023-12-20 13:02:26,599 INFO L226 Difference]: Without dead ends: 24420 [2023-12-20 13:02:26,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 13:02:26,611 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 14911 mSDsluCounter, 15184 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14911 SdHoareTripleChecker+Valid, 16700 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:26,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14911 Valid, 16700 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 13:02:26,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24420 states. [2023-12-20 13:02:27,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24420 to 23104. [2023-12-20 13:02:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23104 states, 23102 states have (on average 1.2408449484893083) internal successors, (28666), 23103 states have internal predecessors, (28666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23104 states to 23104 states and 28666 transitions. [2023-12-20 13:02:27,665 INFO L78 Accepts]: Start accepts. Automaton has 23104 states and 28666 transitions. Word has length 113 [2023-12-20 13:02:27,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:27,666 INFO L495 AbstractCegarLoop]: Abstraction has 23104 states and 28666 transitions. [2023-12-20 13:02:27,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:27,666 INFO L276 IsEmpty]: Start isEmpty. Operand 23104 states and 28666 transitions. [2023-12-20 13:02:27,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-20 13:02:27,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:27,669 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:27,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 13:02:27,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 13:02:27,874 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:27,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:27,875 INFO L85 PathProgramCache]: Analyzing trace with hash 343927418, now seen corresponding path program 1 times [2023-12-20 13:02:27,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:27,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838134907] [2023-12-20 13:02:27,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:27,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:28,319 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 31 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:28,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:28,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838134907] [2023-12-20 13:02:28,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838134907] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:02:28,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863274053] [2023-12-20 13:02:28,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:28,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:02:28,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:02:28,321 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:02:28,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 13:02:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:28,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:02:28,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:02:29,000 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 45 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:29,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:02:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:30,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863274053] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:02:30,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:02:30,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2023-12-20 13:02:30,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939434304] [2023-12-20 13:02:30,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:02:30,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 13:02:30,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:30,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 13:02:30,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 13:02:30,688 INFO L87 Difference]: Start difference. First operand 23104 states and 28666 transitions. Second operand has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:34,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:34,468 INFO L93 Difference]: Finished difference Result 39933 states and 49445 transitions. [2023-12-20 13:02:34,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-20 13:02:34,469 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-20 13:02:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:34,496 INFO L225 Difference]: With dead ends: 39933 [2023-12-20 13:02:34,497 INFO L226 Difference]: Without dead ends: 24152 [2023-12-20 13:02:34,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1436 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1384, Invalid=5588, Unknown=0, NotChecked=0, Total=6972 [2023-12-20 13:02:34,527 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 21386 mSDsluCounter, 13885 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21386 SdHoareTripleChecker+Valid, 15390 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:34,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21386 Valid, 15390 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:02:34,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24152 states. [2023-12-20 13:02:35,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24152 to 17211. [2023-12-20 13:02:35,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17211 states, 17209 states have (on average 1.2280202219768726) internal successors, (21133), 17210 states have internal predecessors, (21133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17211 states to 17211 states and 21133 transitions. [2023-12-20 13:02:35,464 INFO L78 Accepts]: Start accepts. Automaton has 17211 states and 21133 transitions. Word has length 113 [2023-12-20 13:02:35,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:35,464 INFO L495 AbstractCegarLoop]: Abstraction has 17211 states and 21133 transitions. [2023-12-20 13:02:35,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:35,464 INFO L276 IsEmpty]: Start isEmpty. Operand 17211 states and 21133 transitions. [2023-12-20 13:02:35,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-20 13:02:35,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:35,467 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:02:35,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-20 13:02:35,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 13:02:35,673 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:35,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:35,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1893606096, now seen corresponding path program 1 times [2023-12-20 13:02:35,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:35,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384622841] [2023-12-20 13:02:35,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:35,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:36,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:36,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384622841] [2023-12-20 13:02:36,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384622841] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:02:36,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087843951] [2023-12-20 13:02:36,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:36,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:02:36,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:02:36,158 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:02:36,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 13:02:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:36,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 13:02:36,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:02:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:37,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:02:40,015 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:40,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087843951] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:02:40,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:02:40,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 46 [2023-12-20 13:02:40,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368590713] [2023-12-20 13:02:40,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:02:40,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-20 13:02:40,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:40,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-20 13:02:40,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1902, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 13:02:40,017 INFO L87 Difference]: Start difference. First operand 17211 states and 21133 transitions. Second operand has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:17,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:03:17,727 INFO L93 Difference]: Finished difference Result 38114 states and 46169 transitions. [2023-12-20 13:03:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2023-12-20 13:03:17,728 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-20 13:03:17,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:03:17,758 INFO L225 Difference]: With dead ends: 38114 [2023-12-20 13:03:17,758 INFO L226 Difference]: Without dead ends: 28829 [2023-12-20 13:03:17,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34604 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=10783, Invalid=79517, Unknown=0, NotChecked=0, Total=90300 [2023-12-20 13:03:17,772 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 25528 mSDsluCounter, 27296 mSDsCounter, 0 mSdLazyCounter, 4508 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25528 SdHoareTripleChecker+Valid, 28869 SdHoareTripleChecker+Invalid, 4724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 4508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:03:17,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25528 Valid, 28869 Invalid, 4724 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [216 Valid, 4508 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 13:03:17,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28829 states. [2023-12-20 13:03:19,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28829 to 20392. [2023-12-20 13:03:19,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20392 states, 20390 states have (on average 1.2100539480137322) internal successors, (24673), 20391 states have internal predecessors, (24673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20392 states to 20392 states and 24673 transitions. [2023-12-20 13:03:19,415 INFO L78 Accepts]: Start accepts. Automaton has 20392 states and 24673 transitions. Word has length 114 [2023-12-20 13:03:19,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:03:19,415 INFO L495 AbstractCegarLoop]: Abstraction has 20392 states and 24673 transitions. [2023-12-20 13:03:19,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:19,416 INFO L276 IsEmpty]: Start isEmpty. Operand 20392 states and 24673 transitions. [2023-12-20 13:03:19,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 13:03:19,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:03:19,419 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:03:19,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-20 13:03:19,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:03:19,634 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:03:19,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:03:19,635 INFO L85 PathProgramCache]: Analyzing trace with hash -541139766, now seen corresponding path program 1 times [2023-12-20 13:03:19,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:03:19,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474011645] [2023-12-20 13:03:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:03:19,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:03:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:03:21,547 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:21,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:03:21,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474011645] [2023-12-20 13:03:21,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474011645] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:03:21,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273885499] [2023-12-20 13:03:21,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:03:21,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:03:21,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:03:21,550 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:03:21,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 13:03:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:03:21,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 13:03:21,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:03:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:23,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:03:25,620 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:25,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273885499] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:03:25,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:03:25,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 18, 18] total 63 [2023-12-20 13:03:25,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904551324] [2023-12-20 13:03:25,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:03:25,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-20 13:03:25,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:03:25,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-20 13:03:25,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=3675, Unknown=0, NotChecked=0, Total=3906 [2023-12-20 13:03:25,622 INFO L87 Difference]: Start difference. First operand 20392 states and 24673 transitions. Second operand has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:05:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:05:06,090 INFO L93 Difference]: Finished difference Result 48341 states and 57697 transitions. [2023-12-20 13:05:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 399 states. [2023-12-20 13:05:06,091 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-20 13:05:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:05:06,126 INFO L225 Difference]: With dead ends: 48341 [2023-12-20 13:05:06,126 INFO L226 Difference]: Without dead ends: 42011 [2023-12-20 13:05:06,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 458 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84027 ImplicationChecksByTransitivity, 90.1s TimeCoverageRelationStatistics Valid=20781, Invalid=190359, Unknown=0, NotChecked=0, Total=211140 [2023-12-20 13:05:06,143 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 26834 mSDsluCounter, 52236 mSDsCounter, 0 mSdLazyCounter, 12025 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26834 SdHoareTripleChecker+Valid, 53993 SdHoareTripleChecker+Invalid, 12496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 12025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:05:06,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26834 Valid, 53993 Invalid, 12496 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [471 Valid, 12025 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-12-20 13:05:06,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42011 states. [2023-12-20 13:05:08,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42011 to 24368. [2023-12-20 13:05:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24368 states, 24366 states have (on average 1.2002790774029386) internal successors, (29246), 24367 states have internal predecessors, (29246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:05:08,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24368 states to 24368 states and 29246 transitions. [2023-12-20 13:05:08,188 INFO L78 Accepts]: Start accepts. Automaton has 24368 states and 29246 transitions. Word has length 115 [2023-12-20 13:05:08,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:05:08,189 INFO L495 AbstractCegarLoop]: Abstraction has 24368 states and 29246 transitions. [2023-12-20 13:05:08,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:05:08,189 INFO L276 IsEmpty]: Start isEmpty. Operand 24368 states and 29246 transitions. [2023-12-20 13:05:08,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-20 13:05:08,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:05:08,192 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:05:08,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-20 13:05:08,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-20 13:05:08,397 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:05:08,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:05:08,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1319738396, now seen corresponding path program 1 times [2023-12-20 13:05:08,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:05:08,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752911824] [2023-12-20 13:05:08,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:05:08,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:05:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:05:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:05:09,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:05:09,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752911824] [2023-12-20 13:05:09,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752911824] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:05:09,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417427658] [2023-12-20 13:05:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:05:09,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:05:09,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:05:09,134 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:05:09,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 13:05:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:05:09,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-20 13:05:09,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:05:12,941 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:05:12,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:05:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:05:21,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417427658] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:05:21,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:05:21,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 33, 31] total 81 [2023-12-20 13:05:21,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837572954] [2023-12-20 13:05:21,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:05:21,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-12-20 13:05:21,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:05:21,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-12-20 13:05:21,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=5955, Unknown=0, NotChecked=0, Total=6480 [2023-12-20 13:05:21,330 INFO L87 Difference]: Start difference. First operand 24368 states and 29246 transitions. Second operand has 81 states, 81 states have (on average 4.0246913580246915) internal successors, (326), 81 states have internal predecessors, (326), 0 states have call successors, (0), 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... [2023-12-20 13:14:57,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 969 states. [2023-12-20 13:14:57,157 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 13:14:57,157 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 13:14:57,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1215 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 1043 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497062 ImplicationChecksByTransitivity, 551.9s TimeCoverageRelationStatistics Valid=57805, Invalid=1033175, Unknown=0, NotChecked=0, Total=1090980 [2023-12-20 13:14:57,186 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 18052 mSDsluCounter, 12537 mSDsCounter, 0 mSdLazyCounter, 13836 mSolverCounterSat, 837 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18052 SdHoareTripleChecker+Valid, 12904 SdHoareTripleChecker+Invalid, 14673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 837 IncrementalHoareTripleChecker+Valid, 13836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2023-12-20 13:14:57,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18052 Valid, 12904 Invalid, 14673 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [837 Valid, 13836 Invalid, 0 Unknown, 0 Unchecked, 22.2s Time] [2023-12-20 13:14:57,187 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 13:14:57,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-20 13:14:57,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-20 13:14:57,392 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (24368states) and FLOYD_HOARE automaton (currently 969 states, 81 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 1045 known predicates. [2023-12-20 13:14:57,393 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 13:14:57,410 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:14:57,411 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 13:14:57,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 01:14:57 BoogieIcfgContainer [2023-12-20 13:14:57,413 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 13:14:57,413 INFO L158 Benchmark]: Toolchain (without parser) took 841528.21ms. Allocated memory was 250.6MB in the beginning and 2.3GB in the end (delta: 2.0GB). Free memory was 189.6MB in the beginning and 451.2MB in the end (delta: -261.6MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-20 13:14:57,428 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 196.1MB. Free memory is still 150.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 13:14:57,430 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1239.29ms. Allocated memory is still 250.6MB. Free memory was 189.6MB in the beginning and 111.0MB in the end (delta: 78.6MB). Peak memory consumption was 82.8MB. Max. memory is 8.0GB. [2023-12-20 13:14:57,430 INFO L158 Benchmark]: Boogie Procedure Inliner took 354.13ms. Allocated memory is still 250.6MB. Free memory was 111.0MB in the beginning and 169.4MB in the end (delta: -58.4MB). Peak memory consumption was 74.3MB. Max. memory is 8.0GB. [2023-12-20 13:14:57,431 INFO L158 Benchmark]: Boogie Preprocessor took 395.83ms. Allocated memory was 250.6MB in the beginning and 445.6MB in the end (delta: 195.0MB). Free memory was 168.9MB in the beginning and 319.1MB in the end (delta: -150.2MB). Peak memory consumption was 83.1MB. Max. memory is 8.0GB. [2023-12-20 13:14:57,437 INFO L158 Benchmark]: RCFGBuilder took 3064.65ms. Allocated memory was 445.6MB in the beginning and 736.1MB in the end (delta: 290.5MB). Free memory was 319.1MB in the beginning and 523.5MB in the end (delta: -204.5MB). Peak memory consumption was 172.0MB. Max. memory is 8.0GB. [2023-12-20 13:14:57,437 INFO L158 Benchmark]: TraceAbstraction took 836469.77ms. Allocated memory was 736.1MB in the beginning and 2.3GB in the end (delta: 1.5GB). Free memory was 523.0MB in the beginning and 451.2MB in the end (delta: 71.8MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-20 13:14:57,439 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 196.1MB. Free memory is still 150.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1239.29ms. Allocated memory is still 250.6MB. Free memory was 189.6MB in the beginning and 111.0MB in the end (delta: 78.6MB). Peak memory consumption was 82.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 354.13ms. Allocated memory is still 250.6MB. Free memory was 111.0MB in the beginning and 169.4MB in the end (delta: -58.4MB). Peak memory consumption was 74.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 395.83ms. Allocated memory was 250.6MB in the beginning and 445.6MB in the end (delta: 195.0MB). Free memory was 168.9MB in the beginning and 319.1MB in the end (delta: -150.2MB). Peak memory consumption was 83.1MB. Max. memory is 8.0GB. * RCFGBuilder took 3064.65ms. Allocated memory was 445.6MB in the beginning and 736.1MB in the end (delta: 290.5MB). Free memory was 319.1MB in the beginning and 523.5MB in the end (delta: -204.5MB). Peak memory consumption was 172.0MB. Max. memory is 8.0GB. * TraceAbstraction took 836469.77ms. Allocated memory was 736.1MB in the beginning and 2.3GB in the end (delta: 1.5GB). Free memory was 523.0MB in the beginning and 451.2MB in the end (delta: 71.8MB). Peak memory consumption was 1.6GB. 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: 359]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 359). Cancelled while NwaCegarLoop was constructing difference of abstraction (24368states) and FLOYD_HOARE automaton (currently 969 states, 81 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 1045 known predicates. - TimeoutResultAtElement [Line: 434]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 434). Cancelled while NwaCegarLoop was constructing difference of abstraction (24368states) and FLOYD_HOARE automaton (currently 969 states, 81 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 1045 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 820 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 836.4s, OverallIterations: 32, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 773.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 261901 SdHoareTripleChecker+Valid, 46.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 261901 mSDsluCounter, 288887 SdHoareTripleChecker+Invalid, 42.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 242391 mSDsCounter, 3193 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48836 IncrementalHoareTripleChecker+Invalid, 52029 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3193 mSolverCounterUnsat, 46496 mSDtfsCounter, 48836 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4562 GetRequests, 1864 SyntacticMatches, 2 SemanticMatches, 2695 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649012 ImplicationChecksByTransitivity, 713.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35253occurred in iteration=23, InterpolantAutomatonStates: 1317, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.7s AutomataMinimizationTime, 31 MinimizatonAttempts, 139926 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 45.1s InterpolantComputationTime, 3123 NumberOfCodeBlocks, 3123 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 4128 ConstructedInterpolants, 0 QuantifiedInterpolants, 81243 SizeOfPredicates, 102 NumberOfNonLiveVariables, 5052 ConjunctsInSsa, 292 ConjunctsInUnsatCore, 56 InterpolantComputations, 20 PerfectInterpolantSequences, 672/1818 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