/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_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:54:41,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:54:41,852 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:54:41,857 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:54:41,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:54:41,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:54:41,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:54:41,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:54:41,882 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:54:41,885 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:54:41,885 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:54:41,885 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:54:41,886 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:54:41,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:54:41,887 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:54:41,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:54:41,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:54:41,887 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:54:41,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:54:41,888 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:54:41,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:54:41,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:54:41,889 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:54:41,889 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:54:41,889 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:54:41,889 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:54:41,890 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:54:41,890 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:54:41,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:54:41,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:54:41,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:54:41,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:54:41,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:54:41,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:54:41,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:54:41,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:54:41,892 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:54:41,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:54:41,892 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:54:41,892 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:54:41,892 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:54:41,892 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:54:41,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:54:41,893 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:54:42,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:54:42,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:54:42,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:54:42,120 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:54:42,120 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:54:42,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-16 00:54:43,074 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:54:43,419 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:54:43,421 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-16 00:54:43,452 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644e9bb5f/f7742f026b554b7ca9b59342e30bc161/FLAGfb2a92210 [2023-12-16 00:54:43,465 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644e9bb5f/f7742f026b554b7ca9b59342e30bc161 [2023-12-16 00:54:43,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:54:43,468 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:54:43,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:54:43,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:54:43,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:54:43,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:54:43" (1/1) ... [2023-12-16 00:54:43,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b3cdae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:43, skipping insertion in model container [2023-12-16 00:54:43,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:54:43" (1/1) ... [2023-12-16 00:54:43,557 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:54:43,814 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_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[8786,8799] [2023-12-16 00:54:43,877 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_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[16076,16089] [2023-12-16 00:54:44,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:54:44,399 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:54:44,429 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_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[8786,8799] [2023-12-16 00:54:44,447 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_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[16076,16089] [2023-12-16 00:54:44,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:54:44,769 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:54:44,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:44 WrapperNode [2023-12-16 00:54:44,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:54:44,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:54:44,771 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:54:44,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:54:44,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:44" (1/1) ... [2023-12-16 00:54:44,831 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:44" (1/1) ... [2023-12-16 00:54:45,086 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5033 [2023-12-16 00:54:45,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:54:45,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:54:45,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:54:45,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:54:45,094 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:44" (1/1) ... [2023-12-16 00:54:45,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:44" (1/1) ... [2023-12-16 00:54:45,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:44" (1/1) ... [2023-12-16 00:54:45,251 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]. [2023-12-16 00:54:45,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:44" (1/1) ... [2023-12-16 00:54:45,252 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:44" (1/1) ... [2023-12-16 00:54:45,363 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:44" (1/1) ... [2023-12-16 00:54:45,385 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:44" (1/1) ... [2023-12-16 00:54:45,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:44" (1/1) ... [2023-12-16 00:54:45,417 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:44" (1/1) ... [2023-12-16 00:54:45,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:54:45,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:54:45,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:54:45,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:54:45,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:44" (1/1) ... [2023-12-16 00:54:45,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:54:45,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:54:45,493 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) [2023-12-16 00:54:45,513 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 [2023-12-16 00:54:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:54:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:54:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:54:45,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:54:45,646 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:54:45,648 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:54:48,468 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:54:48,521 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:54:48,521 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 00:54:48,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:54:48 BoogieIcfgContainer [2023-12-16 00:54:48,521 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:54:48,523 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:54:48,523 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:54:48,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:54:48,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:54:43" (1/3) ... [2023-12-16 00:54:48,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75da636c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:54:48, skipping insertion in model container [2023-12-16 00:54:48,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:44" (2/3) ... [2023-12-16 00:54:48,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75da636c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:54:48, skipping insertion in model container [2023-12-16 00:54:48,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:54:48" (3/3) ... [2023-12-16 00:54:48,527 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-16 00:54:48,538 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:54:48,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 00:54:48,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:54:48,592 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;@3163a945, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:54:48,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 00:54:48,602 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) [2023-12-16 00:54:48,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 00:54:48,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:48,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:54:48,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:48,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1425616648, now seen corresponding path program 1 times [2023-12-16 00:54:48,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:48,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793077969] [2023-12-16 00:54:48,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:48,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:48,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:48,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793077969] [2023-12-16 00:54:48,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793077969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:48,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:48,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:54:48,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159940045] [2023-12-16 00:54:48,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:48,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 00:54:48,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:48,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 00:54:48,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:54:48,810 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) [2023-12-16 00:54:48,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:48,882 INFO L93 Difference]: Finished difference Result 1612 states and 3179 transitions. [2023-12-16 00:54:48,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 00:54:48,891 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 [2023-12-16 00:54:48,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:48,904 INFO L225 Difference]: With dead ends: 1612 [2023-12-16 00:54:48,904 INFO L226 Difference]: Without dead ends: 816 [2023-12-16 00:54:48,909 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 [2023-12-16 00:54:48,911 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:48,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1544 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:48,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-16 00:54:48,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-12-16 00:54:48,956 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) [2023-12-16 00:54:48,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1545 transitions. [2023-12-16 00:54:48,958 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1545 transitions. Word has length 19 [2023-12-16 00:54:48,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:48,959 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1545 transitions. [2023-12-16 00:54:48,959 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) [2023-12-16 00:54:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1545 transitions. [2023-12-16 00:54:48,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 00:54:48,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:48,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:54:48,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 00:54:48,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:48,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:48,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1589486970, now seen corresponding path program 1 times [2023-12-16 00:54:48,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:48,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218098162] [2023-12-16 00:54:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:48,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:49,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:49,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218098162] [2023-12-16 00:54:49,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218098162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:49,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:49,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:54:49,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462162574] [2023-12-16 00:54:49,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:49,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:54:49,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:49,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:54:49,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:54:49,128 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) [2023-12-16 00:54:49,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:49,188 INFO L93 Difference]: Finished difference Result 854 states and 1604 transitions. [2023-12-16 00:54:49,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:54:49,189 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 [2023-12-16 00:54:49,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:49,193 INFO L225 Difference]: With dead ends: 854 [2023-12-16 00:54:49,193 INFO L226 Difference]: Without dead ends: 816 [2023-12-16 00:54:49,194 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 [2023-12-16 00:54:49,195 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 0 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4599 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:49,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4599 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:49,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-16 00:54:49,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-12-16 00:54:49,216 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) [2023-12-16 00:54:49,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1522 transitions. [2023-12-16 00:54:49,218 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1522 transitions. Word has length 19 [2023-12-16 00:54:49,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:49,218 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1522 transitions. [2023-12-16 00:54:49,218 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) [2023-12-16 00:54:49,219 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1522 transitions. [2023-12-16 00:54:49,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-16 00:54:49,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:49,220 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] [2023-12-16 00:54:49,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 00:54:49,220 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:49,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:49,223 INFO L85 PathProgramCache]: Analyzing trace with hash 775575541, now seen corresponding path program 1 times [2023-12-16 00:54:49,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:49,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818144960] [2023-12-16 00:54:49,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:49,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:49,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:49,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818144960] [2023-12-16 00:54:49,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818144960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:49,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:49,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:54:49,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280953503] [2023-12-16 00:54:49,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:49,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:54:49,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:49,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:54:49,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:54:49,368 INFO L87 Difference]: Start difference. First operand 816 states and 1522 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) [2023-12-16 00:54:49,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:49,500 INFO L93 Difference]: Finished difference Result 1096 states and 1970 transitions. [2023-12-16 00:54:49,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 00:54:49,500 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 [2023-12-16 00:54:49,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:49,506 INFO L225 Difference]: With dead ends: 1096 [2023-12-16 00:54:49,507 INFO L226 Difference]: Without dead ends: 1061 [2023-12-16 00:54:49,507 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 [2023-12-16 00:54:49,510 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 6246 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-12-16 00:54:49,511 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] [2023-12-16 00:54:49,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2023-12-16 00:54:49,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 849. [2023-12-16 00:54:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 1.859504132231405) internal successors, (1575), 848 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:49,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1575 transitions. [2023-12-16 00:54:49,531 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1575 transitions. Word has length 41 [2023-12-16 00:54:49,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:49,535 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1575 transitions. [2023-12-16 00:54:49,536 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) [2023-12-16 00:54:49,536 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1575 transitions. [2023-12-16 00:54:49,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 00:54:49,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:49,541 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] [2023-12-16 00:54:49,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 00:54:49,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:49,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:49,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2119825339, now seen corresponding path program 1 times [2023-12-16 00:54:49,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:49,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434335614] [2023-12-16 00:54:49,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:49,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:49,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:49,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434335614] [2023-12-16 00:54:49,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434335614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:49,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:49,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:49,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284444242] [2023-12-16 00:54:49,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:49,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:49,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:49,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:49,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:49,612 INFO L87 Difference]: Start difference. First operand 849 states and 1575 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) [2023-12-16 00:54:49,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:49,642 INFO L93 Difference]: Finished difference Result 974 states and 1774 transitions. [2023-12-16 00:54:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:49,642 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 [2023-12-16 00:54:49,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:49,645 INFO L225 Difference]: With dead ends: 974 [2023-12-16 00:54:49,645 INFO L226 Difference]: Without dead ends: 906 [2023-12-16 00:54:49,647 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 [2023-12-16 00:54:49,652 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 [2023-12-16 00:54:49,653 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] [2023-12-16 00:54:49,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-16 00:54:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-12-16 00:54:49,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8414634146341464) internal successors, (1661), 903 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:49,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1661 transitions. [2023-12-16 00:54:49,669 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1661 transitions. Word has length 43 [2023-12-16 00:54:49,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:49,669 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1661 transitions. [2023-12-16 00:54:49,669 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) [2023-12-16 00:54:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1661 transitions. [2023-12-16 00:54:49,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 00:54:49,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:49,670 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] [2023-12-16 00:54:49,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 00:54:49,671 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:49,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:49,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2117680387, now seen corresponding path program 1 times [2023-12-16 00:54:49,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:49,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18653306] [2023-12-16 00:54:49,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:49,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:49,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:49,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18653306] [2023-12-16 00:54:49,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18653306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:49,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:49,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:54:49,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608268589] [2023-12-16 00:54:49,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:49,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:54:49,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:49,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:54:49,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:54:49,830 INFO L87 Difference]: Start difference. First operand 904 states and 1661 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) [2023-12-16 00:54:49,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:49,929 INFO L93 Difference]: Finished difference Result 1029 states and 1857 transitions. [2023-12-16 00:54:49,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:54:49,930 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 [2023-12-16 00:54:49,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:49,933 INFO L225 Difference]: With dead ends: 1029 [2023-12-16 00:54:49,933 INFO L226 Difference]: Without dead ends: 906 [2023-12-16 00:54:49,936 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 [2023-12-16 00:54:49,937 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 [2023-12-16 00:54:49,938 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] [2023-12-16 00:54:49,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-16 00:54:49,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-12-16 00:54:49,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8392461197339247) internal successors, (1659), 903 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:49,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1659 transitions. [2023-12-16 00:54:49,951 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1659 transitions. Word has length 43 [2023-12-16 00:54:49,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:49,952 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1659 transitions. [2023-12-16 00:54:49,953 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) [2023-12-16 00:54:49,953 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1659 transitions. [2023-12-16 00:54:49,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-16 00:54:49,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:49,953 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] [2023-12-16 00:54:49,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 00:54:49,953 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:49,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:49,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1351966150, now seen corresponding path program 1 times [2023-12-16 00:54:49,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:49,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654251926] [2023-12-16 00:54:49,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:49,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:50,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:50,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654251926] [2023-12-16 00:54:50,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654251926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:50,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:50,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:54:50,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904404476] [2023-12-16 00:54:50,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:50,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:54:50,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:50,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:54:50,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:54:50,052 INFO L87 Difference]: Start difference. First operand 904 states and 1659 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) [2023-12-16 00:54:50,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:50,078 INFO L93 Difference]: Finished difference Result 912 states and 1668 transitions. [2023-12-16 00:54:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:54:50,079 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 [2023-12-16 00:54:50,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:50,081 INFO L225 Difference]: With dead ends: 912 [2023-12-16 00:54:50,081 INFO L226 Difference]: Without dead ends: 910 [2023-12-16 00:54:50,082 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 [2023-12-16 00:54:50,082 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 [2023-12-16 00:54:50,082 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] [2023-12-16 00:54:50,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-12-16 00:54:50,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 908. [2023-12-16 00:54:50,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 906 states have (on average 1.8344370860927153) internal successors, (1662), 907 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:50,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1662 transitions. [2023-12-16 00:54:50,094 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1662 transitions. Word has length 44 [2023-12-16 00:54:50,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:50,094 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1662 transitions. [2023-12-16 00:54:50,095 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) [2023-12-16 00:54:50,095 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1662 transitions. [2023-12-16 00:54:50,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 00:54:50,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:50,095 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] [2023-12-16 00:54:50,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 00:54:50,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:50,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:50,096 INFO L85 PathProgramCache]: Analyzing trace with hash -302650947, now seen corresponding path program 1 times [2023-12-16 00:54:50,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:50,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979785442] [2023-12-16 00:54:50,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:50,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:50,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:50,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979785442] [2023-12-16 00:54:50,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979785442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:50,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:50,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:50,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077472178] [2023-12-16 00:54:50,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:50,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:50,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:50,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:50,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:50,135 INFO L87 Difference]: Start difference. First operand 908 states and 1662 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) [2023-12-16 00:54:50,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:50,155 INFO L93 Difference]: Finished difference Result 1046 states and 1875 transitions. [2023-12-16 00:54:50,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:50,156 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 [2023-12-16 00:54:50,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:50,158 INFO L225 Difference]: With dead ends: 1046 [2023-12-16 00:54:50,158 INFO L226 Difference]: Without dead ends: 974 [2023-12-16 00:54:50,159 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 [2023-12-16 00:54:50,159 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 [2023-12-16 00:54:50,159 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] [2023-12-16 00:54:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-12-16 00:54:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 972. [2023-12-16 00:54:50,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 970 states have (on average 1.81340206185567) internal successors, (1759), 971 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:50,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1759 transitions. [2023-12-16 00:54:50,172 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1759 transitions. Word has length 45 [2023-12-16 00:54:50,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:50,172 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1759 transitions. [2023-12-16 00:54:50,172 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) [2023-12-16 00:54:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1759 transitions. [2023-12-16 00:54:50,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 00:54:50,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:50,173 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] [2023-12-16 00:54:50,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 00:54:50,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:50,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:50,174 INFO L85 PathProgramCache]: Analyzing trace with hash -888363075, now seen corresponding path program 1 times [2023-12-16 00:54:50,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:50,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214918766] [2023-12-16 00:54:50,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:50,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:50,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:50,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:50,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214918766] [2023-12-16 00:54:50,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214918766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:50,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:50,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:50,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950644149] [2023-12-16 00:54:50,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:50,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:50,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:50,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:50,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:50,232 INFO L87 Difference]: Start difference. First operand 972 states and 1759 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) [2023-12-16 00:54:50,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:50,253 INFO L93 Difference]: Finished difference Result 1326 states and 2299 transitions. [2023-12-16 00:54:50,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:50,254 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 [2023-12-16 00:54:50,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:50,257 INFO L225 Difference]: With dead ends: 1326 [2023-12-16 00:54:50,257 INFO L226 Difference]: Without dead ends: 1137 [2023-12-16 00:54:50,258 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 [2023-12-16 00:54:50,258 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 [2023-12-16 00:54:50,258 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] [2023-12-16 00:54:50,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2023-12-16 00:54:50,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1135. [2023-12-16 00:54:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1133 states have (on average 1.766107678729038) internal successors, (2001), 1134 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2001 transitions. [2023-12-16 00:54:50,273 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2001 transitions. Word has length 45 [2023-12-16 00:54:50,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:50,274 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 2001 transitions. [2023-12-16 00:54:50,274 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) [2023-12-16 00:54:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2001 transitions. [2023-12-16 00:54:50,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 00:54:50,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:50,274 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] [2023-12-16 00:54:50,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 00:54:50,274 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:50,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:50,275 INFO L85 PathProgramCache]: Analyzing trace with hash 370365, now seen corresponding path program 1 times [2023-12-16 00:54:50,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:50,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142889636] [2023-12-16 00:54:50,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:50,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:50,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:50,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142889636] [2023-12-16 00:54:50,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142889636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:50,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:50,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:50,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863083587] [2023-12-16 00:54:50,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:50,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:50,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:50,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:50,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:50,302 INFO L87 Difference]: Start difference. First operand 1135 states and 2001 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) [2023-12-16 00:54:50,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:50,328 INFO L93 Difference]: Finished difference Result 1791 states and 2983 transitions. [2023-12-16 00:54:50,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:50,328 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 [2023-12-16 00:54:50,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:50,332 INFO L225 Difference]: With dead ends: 1791 [2023-12-16 00:54:50,332 INFO L226 Difference]: Without dead ends: 1439 [2023-12-16 00:54:50,333 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 [2023-12-16 00:54:50,333 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 [2023-12-16 00:54:50,333 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] [2023-12-16 00:54:50,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2023-12-16 00:54:50,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1437. [2023-12-16 00:54:50,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1435 states have (on average 1.6982578397212544) internal successors, (2437), 1436 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:50,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2437 transitions. [2023-12-16 00:54:50,354 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2437 transitions. Word has length 45 [2023-12-16 00:54:50,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:50,354 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 2437 transitions. [2023-12-16 00:54:50,354 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) [2023-12-16 00:54:50,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2437 transitions. [2023-12-16 00:54:50,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 00:54:50,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:50,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:54:50,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 00:54:50,355 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:50,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:50,355 INFO L85 PathProgramCache]: Analyzing trace with hash -262707011, now seen corresponding path program 1 times [2023-12-16 00:54:50,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:50,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148222034] [2023-12-16 00:54:50,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:50,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:50,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:50,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:50,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148222034] [2023-12-16 00:54:50,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148222034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:50,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:50,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:50,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482844639] [2023-12-16 00:54:50,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:50,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:50,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:50,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:50,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:50,380 INFO L87 Difference]: Start difference. First operand 1437 states and 2437 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) [2023-12-16 00:54:50,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:50,411 INFO L93 Difference]: Finished difference Result 2649 states and 4207 transitions. [2023-12-16 00:54:50,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:50,412 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 [2023-12-16 00:54:50,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:50,417 INFO L225 Difference]: With dead ends: 2649 [2023-12-16 00:54:50,417 INFO L226 Difference]: Without dead ends: 1995 [2023-12-16 00:54:50,418 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 [2023-12-16 00:54:50,419 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 [2023-12-16 00:54:50,419 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] [2023-12-16 00:54:50,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2023-12-16 00:54:50,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1993. [2023-12-16 00:54:50,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1991 states have (on average 1.6137619286790557) internal successors, (3213), 1992 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3213 transitions. [2023-12-16 00:54:50,451 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3213 transitions. Word has length 45 [2023-12-16 00:54:50,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:50,451 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 3213 transitions. [2023-12-16 00:54:50,451 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) [2023-12-16 00:54:50,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3213 transitions. [2023-12-16 00:54:50,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 00:54:50,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:50,452 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] [2023-12-16 00:54:50,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 00:54:50,452 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:50,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:50,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1070420117, now seen corresponding path program 1 times [2023-12-16 00:54:50,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:50,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961009005] [2023-12-16 00:54:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:50,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:54:50,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:50,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961009005] [2023-12-16 00:54:50,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961009005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:50,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:50,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:54:50,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309195845] [2023-12-16 00:54:50,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:50,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:54:50,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:50,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:54:50,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:54:50,564 INFO L87 Difference]: Start difference. First operand 1993 states and 3213 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) [2023-12-16 00:54:50,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:50,689 INFO L93 Difference]: Finished difference Result 6755 states and 10074 transitions. [2023-12-16 00:54:50,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:54:50,690 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 [2023-12-16 00:54:50,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:50,704 INFO L225 Difference]: With dead ends: 6755 [2023-12-16 00:54:50,704 INFO L226 Difference]: Without dead ends: 5889 [2023-12-16 00:54:50,708 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 [2023-12-16 00:54:50,709 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4637 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:50,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3284 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:50,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5889 states. [2023-12-16 00:54:50,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5889 to 3033. [2023-12-16 00:54:50,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 3031 states have (on average 1.5483338832068625) internal successors, (4693), 3032 states have internal predecessors, (4693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:50,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4693 transitions. [2023-12-16 00:54:50,786 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4693 transitions. Word has length 61 [2023-12-16 00:54:50,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:50,786 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 4693 transitions. [2023-12-16 00:54:50,786 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) [2023-12-16 00:54:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4693 transitions. [2023-12-16 00:54:50,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 00:54:50,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:50,787 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] [2023-12-16 00:54:50,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 00:54:50,787 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:50,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:50,788 INFO L85 PathProgramCache]: Analyzing trace with hash 484707989, now seen corresponding path program 1 times [2023-12-16 00:54:50,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:50,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191503790] [2023-12-16 00:54:50,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:50,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 00:54:50,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:50,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191503790] [2023-12-16 00:54:50,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191503790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:50,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:50,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:54:50,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243753918] [2023-12-16 00:54:50,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:50,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:54:50,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:50,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:54:50,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:54:50,874 INFO L87 Difference]: Start difference. First operand 3033 states and 4693 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) [2023-12-16 00:54:51,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:51,028 INFO L93 Difference]: Finished difference Result 7963 states and 11802 transitions. [2023-12-16 00:54:51,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:54:51,029 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 [2023-12-16 00:54:51,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:51,058 INFO L225 Difference]: With dead ends: 7963 [2023-12-16 00:54:51,058 INFO L226 Difference]: Without dead ends: 6753 [2023-12-16 00:54:51,061 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 [2023-12-16 00:54:51,062 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4672 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4672 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:51,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4672 Valid, 3304 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:51,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6753 states. [2023-12-16 00:54:51,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6753 to 4673. [2023-12-16 00:54:51,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4673 states, 4671 states have (on average 1.5031042603296938) internal successors, (7021), 4672 states have internal predecessors, (7021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:51,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 7021 transitions. [2023-12-16 00:54:51,174 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 7021 transitions. Word has length 61 [2023-12-16 00:54:51,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:51,175 INFO L495 AbstractCegarLoop]: Abstraction has 4673 states and 7021 transitions. [2023-12-16 00:54:51,175 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) [2023-12-16 00:54:51,175 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 7021 transitions. [2023-12-16 00:54:51,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 00:54:51,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:51,176 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] [2023-12-16 00:54:51,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 00:54:51,176 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:51,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:51,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1373441429, now seen corresponding path program 1 times [2023-12-16 00:54:51,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:51,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145180767] [2023-12-16 00:54:51,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:51,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 00:54:51,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:51,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145180767] [2023-12-16 00:54:51,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145180767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:51,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:51,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:54:51,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522637953] [2023-12-16 00:54:51,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:51,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:54:51,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:51,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:54:51,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:54:51,248 INFO L87 Difference]: Start difference. First operand 4673 states and 7021 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) [2023-12-16 00:54:51,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:51,466 INFO L93 Difference]: Finished difference Result 9171 states and 13522 transitions. [2023-12-16 00:54:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:54:51,467 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 [2023-12-16 00:54:51,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:51,477 INFO L225 Difference]: With dead ends: 9171 [2023-12-16 00:54:51,477 INFO L226 Difference]: Without dead ends: 7961 [2023-12-16 00:54:51,479 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 [2023-12-16 00:54:51,480 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 [2023-12-16 00:54:51,480 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] [2023-12-16 00:54:51,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7961 states. [2023-12-16 00:54:51,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7961 to 5881. [2023-12-16 00:54:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5881 states, 5879 states have (on average 1.4868174859670011) internal successors, (8741), 5880 states have internal predecessors, (8741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:51,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 8741 transitions. [2023-12-16 00:54:51,629 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 8741 transitions. Word has length 61 [2023-12-16 00:54:51,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:51,629 INFO L495 AbstractCegarLoop]: Abstraction has 5881 states and 8741 transitions. [2023-12-16 00:54:51,630 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) [2023-12-16 00:54:51,630 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 8741 transitions. [2023-12-16 00:54:51,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 00:54:51,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:51,631 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] [2023-12-16 00:54:51,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 00:54:51,632 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:51,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:51,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1110364053, now seen corresponding path program 1 times [2023-12-16 00:54:51,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:51,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410944869] [2023-12-16 00:54:51,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:51,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 00:54:51,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:51,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410944869] [2023-12-16 00:54:51,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410944869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:51,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:51,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:54:51,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936616950] [2023-12-16 00:54:51,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:51,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:54:51,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:51,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:54:51,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:54:51,717 INFO L87 Difference]: Start difference. First operand 5881 states and 8741 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) [2023-12-16 00:54:51,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:51,914 INFO L93 Difference]: Finished difference Result 10379 states and 15242 transitions. [2023-12-16 00:54:51,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:54:51,915 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 [2023-12-16 00:54:51,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:51,927 INFO L225 Difference]: With dead ends: 10379 [2023-12-16 00:54:51,928 INFO L226 Difference]: Without dead ends: 9169 [2023-12-16 00:54:51,931 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 [2023-12-16 00:54:51,932 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 [2023-12-16 00:54:51,932 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] [2023-12-16 00:54:51,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9169 states. [2023-12-16 00:54:52,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9169 to 7089. [2023-12-16 00:54:52,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7089 states, 7087 states have (on average 1.4760829688161423) internal successors, (10461), 7088 states have internal predecessors, (10461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7089 states to 7089 states and 10461 transitions. [2023-12-16 00:54:52,090 INFO L78 Accepts]: Start accepts. Automaton has 7089 states and 10461 transitions. Word has length 61 [2023-12-16 00:54:52,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:52,090 INFO L495 AbstractCegarLoop]: Abstraction has 7089 states and 10461 transitions. [2023-12-16 00:54:52,090 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) [2023-12-16 00:54:52,091 INFO L276 IsEmpty]: Start isEmpty. Operand 7089 states and 10461 transitions. [2023-12-16 00:54:52,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 00:54:52,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:52,092 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] [2023-12-16 00:54:52,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 00:54:52,092 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:52,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:52,092 INFO L85 PathProgramCache]: Analyzing trace with hash -263811695, now seen corresponding path program 1 times [2023-12-16 00:54:52,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:52,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231339573] [2023-12-16 00:54:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:52,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:52,153 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:52,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:52,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231339573] [2023-12-16 00:54:52,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231339573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:52,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:52,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:52,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815431584] [2023-12-16 00:54:52,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:52,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:52,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:52,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:52,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:52,155 INFO L87 Difference]: Start difference. First operand 7089 states and 10461 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) [2023-12-16 00:54:52,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:52,319 INFO L93 Difference]: Finished difference Result 13397 states and 19455 transitions. [2023-12-16 00:54:52,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:52,320 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 [2023-12-16 00:54:52,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:52,329 INFO L225 Difference]: With dead ends: 13397 [2023-12-16 00:54:52,329 INFO L226 Difference]: Without dead ends: 7091 [2023-12-16 00:54:52,337 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 [2023-12-16 00:54:52,337 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 [2023-12-16 00:54:52,337 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] [2023-12-16 00:54:52,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7091 states. [2023-12-16 00:54:52,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7091 to 7089. [2023-12-16 00:54:52,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7089 states, 7087 states have (on average 1.4585861436432905) internal successors, (10337), 7088 states have internal predecessors, (10337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7089 states to 7089 states and 10337 transitions. [2023-12-16 00:54:52,511 INFO L78 Accepts]: Start accepts. Automaton has 7089 states and 10337 transitions. Word has length 62 [2023-12-16 00:54:52,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:52,511 INFO L495 AbstractCegarLoop]: Abstraction has 7089 states and 10337 transitions. [2023-12-16 00:54:52,511 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) [2023-12-16 00:54:52,511 INFO L276 IsEmpty]: Start isEmpty. Operand 7089 states and 10337 transitions. [2023-12-16 00:54:52,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 00:54:52,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:52,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:54:52,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 00:54:52,512 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:52,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:52,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1794718171, now seen corresponding path program 1 times [2023-12-16 00:54:52,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:52,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102508303] [2023-12-16 00:54:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:52,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:52,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:52,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:52,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102508303] [2023-12-16 00:54:52,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102508303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:52,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:52,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:54:52,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555652469] [2023-12-16 00:54:52,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:52,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:52,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:52,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:52,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:52,559 INFO L87 Difference]: Start difference. First operand 7089 states and 10337 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 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) [2023-12-16 00:54:55,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:55,353 INFO L93 Difference]: Finished difference Result 8593 states and 13210 transitions. [2023-12-16 00:54:55,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:55,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 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 [2023-12-16 00:54:55,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:55,365 INFO L225 Difference]: With dead ends: 8593 [2023-12-16 00:54:55,366 INFO L226 Difference]: Without dead ends: 7840 [2023-12-16 00:54:55,368 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 [2023-12-16 00:54:55,368 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 822 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 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, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:55,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 555 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 00:54:55,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7840 states. [2023-12-16 00:54:55,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7840 to 7840. [2023-12-16 00:54:55,572 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) [2023-12-16 00:54:55,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11316 transitions. [2023-12-16 00:54:55,583 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11316 transitions. Word has length 62 [2023-12-16 00:54:55,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:55,584 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11316 transitions. [2023-12-16 00:54:55,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 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) [2023-12-16 00:54:55,584 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11316 transitions. [2023-12-16 00:54:55,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 00:54:55,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:55,585 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] [2023-12-16 00:54:55,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 00:54:55,585 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:55,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:55,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1786499741, now seen corresponding path program 1 times [2023-12-16 00:54:55,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:55,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959696756] [2023-12-16 00:54:55,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:55,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:55,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:55,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959696756] [2023-12-16 00:54:55,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959696756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:55,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:55,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:55,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374206431] [2023-12-16 00:54:55,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:55,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:55,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:55,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:55,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:55,636 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) [2023-12-16 00:54:55,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:55,692 INFO L93 Difference]: Finished difference Result 10236 states and 14723 transitions. [2023-12-16 00:54:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:55,692 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 [2023-12-16 00:54:55,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:55,698 INFO L225 Difference]: With dead ends: 10236 [2023-12-16 00:54:55,698 INFO L226 Difference]: Without dead ends: 3930 [2023-12-16 00:54:55,702 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 [2023-12-16 00:54:55,703 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 [2023-12-16 00:54:55,703 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] [2023-12-16 00:54:55,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2023-12-16 00:54:55,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3923. [2023-12-16 00:54:55,759 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) [2023-12-16 00:54:55,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 5803 transitions. [2023-12-16 00:54:55,764 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 5803 transitions. Word has length 63 [2023-12-16 00:54:55,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:55,764 INFO L495 AbstractCegarLoop]: Abstraction has 3923 states and 5803 transitions. [2023-12-16 00:54:55,764 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) [2023-12-16 00:54:55,764 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 5803 transitions. [2023-12-16 00:54:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 00:54:55,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:55,765 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] [2023-12-16 00:54:55,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 00:54:55,765 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:55,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:55,765 INFO L85 PathProgramCache]: Analyzing trace with hash 884488671, now seen corresponding path program 1 times [2023-12-16 00:54:55,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:55,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525775811] [2023-12-16 00:54:55,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:55,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:55,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:55,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525775811] [2023-12-16 00:54:55,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525775811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:55,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:55,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:55,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37178321] [2023-12-16 00:54:55,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:55,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:55,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:55,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:55,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:55,812 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) [2023-12-16 00:54:55,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:55,847 INFO L93 Difference]: Finished difference Result 5115 states and 7477 transitions. [2023-12-16 00:54:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:55,848 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 [2023-12-16 00:54:55,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:55,852 INFO L225 Difference]: With dead ends: 5115 [2023-12-16 00:54:55,852 INFO L226 Difference]: Without dead ends: 2737 [2023-12-16 00:54:55,854 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 [2023-12-16 00:54:55,854 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 [2023-12-16 00:54:55,854 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] [2023-12-16 00:54:55,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2023-12-16 00:54:55,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2735. [2023-12-16 00:54:55,897 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) [2023-12-16 00:54:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4109 transitions. [2023-12-16 00:54:55,900 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4109 transitions. Word has length 64 [2023-12-16 00:54:55,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:55,900 INFO L495 AbstractCegarLoop]: Abstraction has 2735 states and 4109 transitions. [2023-12-16 00:54:55,900 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) [2023-12-16 00:54:55,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4109 transitions. [2023-12-16 00:54:55,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 00:54:55,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:55,902 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] [2023-12-16 00:54:55,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 00:54:55,902 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:55,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:55,902 INFO L85 PathProgramCache]: Analyzing trace with hash 841150381, now seen corresponding path program 1 times [2023-12-16 00:54:55,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:55,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542539111] [2023-12-16 00:54:55,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:55,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:55,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:55,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542539111] [2023-12-16 00:54:55,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542539111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:55,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:55,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:55,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523329099] [2023-12-16 00:54:55,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:55,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:55,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:55,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:55,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:55,957 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) [2023-12-16 00:54:55,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:55,982 INFO L93 Difference]: Finished difference Result 3333 states and 4936 transitions. [2023-12-16 00:54:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:55,982 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 [2023-12-16 00:54:55,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:55,985 INFO L225 Difference]: With dead ends: 3333 [2023-12-16 00:54:55,985 INFO L226 Difference]: Without dead ends: 2143 [2023-12-16 00:54:55,986 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 [2023-12-16 00:54:55,987 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 [2023-12-16 00:54:55,987 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] [2023-12-16 00:54:55,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2023-12-16 00:54:56,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2141. [2023-12-16 00:54:56,010 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) [2023-12-16 00:54:56,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 3273 transitions. [2023-12-16 00:54:56,012 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 3273 transitions. Word has length 66 [2023-12-16 00:54:56,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:56,012 INFO L495 AbstractCegarLoop]: Abstraction has 2141 states and 3273 transitions. [2023-12-16 00:54:56,012 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) [2023-12-16 00:54:56,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 3273 transitions. [2023-12-16 00:54:56,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 00:54:56,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:56,013 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] [2023-12-16 00:54:56,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 00:54:56,013 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:56,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:56,013 INFO L85 PathProgramCache]: Analyzing trace with hash -136343813, now seen corresponding path program 1 times [2023-12-16 00:54:56,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:56,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401376808] [2023-12-16 00:54:56,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:56,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:57,031 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:57,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:57,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401376808] [2023-12-16 00:54:57,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401376808] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:54:57,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590692421] [2023-12-16 00:54:57,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:57,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:54:57,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:54:57,034 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) [2023-12-16 00:54:57,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:54:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:57,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 00:54:57,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:54:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:54:57,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:54:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:54:57,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590692421] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:54:57,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:54:57,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-16 00:54:57,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609531067] [2023-12-16 00:54:57,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:54:57,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 00:54:57,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:57,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 00:54:57,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-16 00:54:57,377 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) [2023-12-16 00:54:59,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:59,279 INFO L93 Difference]: Finished difference Result 6296 states and 8766 transitions. [2023-12-16 00:54:59,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-16 00:54:59,280 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 [2023-12-16 00:54:59,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:59,288 INFO L225 Difference]: With dead ends: 6296 [2023-12-16 00:54:59,288 INFO L226 Difference]: Without dead ends: 5700 [2023-12-16 00:54:59,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-16 00:54:59,290 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 11439 mSDsluCounter, 6263 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11439 SdHoareTripleChecker+Valid, 7765 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:59,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11439 Valid, 7765 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:54:59,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2023-12-16 00:54:59,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5372. [2023-12-16 00:54:59,382 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) [2023-12-16 00:54:59,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 7401 transitions. [2023-12-16 00:54:59,388 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 7401 transitions. Word has length 68 [2023-12-16 00:54:59,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:59,388 INFO L495 AbstractCegarLoop]: Abstraction has 5372 states and 7401 transitions. [2023-12-16 00:54:59,388 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) [2023-12-16 00:54:59,388 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 7401 transitions. [2023-12-16 00:54:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-16 00:54:59,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:59,389 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] [2023-12-16 00:54:59,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 00:54:59,593 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 [2023-12-16 00:54:59,593 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:59,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:59,593 INFO L85 PathProgramCache]: Analyzing trace with hash -600280717, now seen corresponding path program 1 times [2023-12-16 00:54:59,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:59,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703819790] [2023-12-16 00:54:59,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:59,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:55:01,623 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:55:01,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:55:01,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703819790] [2023-12-16 00:55:01,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703819790] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:55:01,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169879680] [2023-12-16 00:55:01,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:55:01,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:55:01,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:55:01,625 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) [2023-12-16 00:55:01,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:55:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:55:01,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 00:55:01,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:55:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:55:02,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:55:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:55:02,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169879680] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:55:02,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:55:02,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-16 00:55:02,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972231777] [2023-12-16 00:55:02,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:55:02,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-16 00:55:02,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:55:02,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-16 00:55:02,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-12-16 00:55:02,665 INFO L87 Difference]: Start difference. First operand 5372 states and 7401 transitions. Second operand has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:55:04,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:55:04,452 INFO L93 Difference]: Finished difference Result 21318 states and 27963 transitions. [2023-12-16 00:55:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-16 00:55:04,453 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 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 [2023-12-16 00:55:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:55:04,477 INFO L225 Difference]: With dead ends: 21318 [2023-12-16 00:55:04,477 INFO L226 Difference]: Without dead ends: 17962 [2023-12-16 00:55:04,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=596, Invalid=2710, Unknown=0, NotChecked=0, Total=3306 [2023-12-16 00:55:04,486 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 18924 mSDsluCounter, 6584 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18924 SdHoareTripleChecker+Valid, 8078 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:55:04,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18924 Valid, 8078 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:55:04,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17962 states. [2023-12-16 00:55:04,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17962 to 16590. [2023-12-16 00:55:04,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16590 states, 16588 states have (on average 1.3147455992283579) internal successors, (21809), 16589 states have internal predecessors, (21809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:55:04,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16590 states to 16590 states and 21809 transitions. [2023-12-16 00:55:04,951 INFO L78 Accepts]: Start accepts. Automaton has 16590 states and 21809 transitions. Word has length 69 [2023-12-16 00:55:04,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:55:04,951 INFO L495 AbstractCegarLoop]: Abstraction has 16590 states and 21809 transitions. [2023-12-16 00:55:04,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:55:04,951 INFO L276 IsEmpty]: Start isEmpty. Operand 16590 states and 21809 transitions. [2023-12-16 00:55:04,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-16 00:55:04,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:55:04,952 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] [2023-12-16 00:55:04,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 00:55:05,155 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 [2023-12-16 00:55:05,155 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:55:05,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:55:05,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1351926847, now seen corresponding path program 1 times [2023-12-16 00:55:05,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:55:05,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578364430] [2023-12-16 00:55:05,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:55:05,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:55:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:55:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:55:05,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:55:05,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578364430] [2023-12-16 00:55:05,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578364430] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:55:05,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9842356] [2023-12-16 00:55:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:55:05,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:55:05,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:55:05,413 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) [2023-12-16 00:55:05,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:55:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:55:05,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 00:55:05,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:55:05,991 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:55:05,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:55:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:55:06,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9842356] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:55:06,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:55:06,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-16 00:55:06,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264785992] [2023-12-16 00:55:06,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:55:06,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-16 00:55:06,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:55:06,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-16 00:55:06,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-12-16 00:55:06,572 INFO L87 Difference]: Start difference. First operand 16590 states and 21809 transitions. Second operand has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 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) [2023-12-16 00:55:09,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:55:09,182 INFO L93 Difference]: Finished difference Result 55463 states and 71292 transitions. [2023-12-16 00:55:09,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-16 00:55:09,184 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 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 69 [2023-12-16 00:55:09,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:55:09,229 INFO L225 Difference]: With dead ends: 55463 [2023-12-16 00:55:09,229 INFO L226 Difference]: Without dead ends: 41536 [2023-12-16 00:55:09,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=796, Invalid=3236, Unknown=0, NotChecked=0, Total=4032 [2023-12-16 00:55:09,248 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 18389 mSDsluCounter, 7938 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18389 SdHoareTripleChecker+Valid, 9436 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 00:55:09,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18389 Valid, 9436 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 00:55:09,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41536 states. [2023-12-16 00:55:09,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41536 to 22116. [2023-12-16 00:55:09,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22116 states, 22114 states have (on average 1.2798679569503482) internal successors, (28303), 22115 states have internal predecessors, (28303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:55:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22116 states to 22116 states and 28303 transitions. [2023-12-16 00:55:09,995 INFO L78 Accepts]: Start accepts. Automaton has 22116 states and 28303 transitions. Word has length 69 [2023-12-16 00:55:09,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:55:09,996 INFO L495 AbstractCegarLoop]: Abstraction has 22116 states and 28303 transitions. [2023-12-16 00:55:09,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 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) [2023-12-16 00:55:09,996 INFO L276 IsEmpty]: Start isEmpty. Operand 22116 states and 28303 transitions. [2023-12-16 00:55:09,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 00:55:09,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:55:09,997 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] [2023-12-16 00:55:10,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 00:55:10,201 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 [2023-12-16 00:55:10,201 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:55:10,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:55:10,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1034756201, now seen corresponding path program 1 times [2023-12-16 00:55:10,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:55:10,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864041657] [2023-12-16 00:55:10,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:55:10,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:55:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:55:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:55:10,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:55:10,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864041657] [2023-12-16 00:55:10,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864041657] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:55:10,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148542497] [2023-12-16 00:55:10,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:55:10,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:55:10,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:55:10,368 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) [2023-12-16 00:55:10,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 00:55:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:55:10,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 00:55:10,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:55:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:55:10,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:55:11,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:55:11,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148542497] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:55:11,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:55:11,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-12-16 00:55:11,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679614306] [2023-12-16 00:55:11,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:55:11,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 00:55:11,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:55:11,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 00:55:11,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-12-16 00:55:11,129 INFO L87 Difference]: Start difference. First operand 22116 states and 28303 transitions. Second operand has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:55:12,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:55:12,043 INFO L93 Difference]: Finished difference Result 42393 states and 53852 transitions. [2023-12-16 00:55:12,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 00:55:12,044 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 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 [2023-12-16 00:55:12,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:55:12,072 INFO L225 Difference]: With dead ends: 42393 [2023-12-16 00:55:12,072 INFO L226 Difference]: Without dead ends: 23878 [2023-12-16 00:55:12,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2023-12-16 00:55:12,089 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 10494 mSDsluCounter, 4722 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10494 SdHoareTripleChecker+Valid, 6234 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 00:55:12,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10494 Valid, 6234 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 00:55:12,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23878 states. [2023-12-16 00:55:12,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23878 to 22440. [2023-12-16 00:55:12,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22440 states, 22438 states have (on average 1.2679828861752385) internal successors, (28451), 22439 states have internal predecessors, (28451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:55:12,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22440 states to 22440 states and 28451 transitions. [2023-12-16 00:55:12,806 INFO L78 Accepts]: Start accepts. Automaton has 22440 states and 28451 transitions. Word has length 70 [2023-12-16 00:55:12,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:55:12,806 INFO L495 AbstractCegarLoop]: Abstraction has 22440 states and 28451 transitions. [2023-12-16 00:55:12,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:55:12,807 INFO L276 IsEmpty]: Start isEmpty. Operand 22440 states and 28451 transitions. [2023-12-16 00:55:12,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 00:55:12,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:55:12,808 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] [2023-12-16 00:55:12,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 00:55:13,013 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 [2023-12-16 00:55:13,013 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:55:13,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:55:13,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1418177617, now seen corresponding path program 1 times [2023-12-16 00:55:13,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:55:13,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512048767] [2023-12-16 00:55:13,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:55:13,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:55:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:55:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:55:14,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:55:14,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512048767] [2023-12-16 00:55:14,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512048767] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:55:14,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726854614] [2023-12-16 00:55:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:55:14,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:55:14,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:55:14,751 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) [2023-12-16 00:55:14,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 00:55:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:55:14,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-16 00:55:14,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:55:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:55:17,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:55:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:55:19,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726854614] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:55:19,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:55:19,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 19] total 61 [2023-12-16 00:55:19,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806922527] [2023-12-16 00:55:19,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:55:19,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-16 00:55:19,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:55:19,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-16 00:55:19,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3355, Unknown=0, NotChecked=0, Total=3660 [2023-12-16 00:55:19,996 INFO L87 Difference]: Start difference. First operand 22440 states and 28451 transitions. Second operand has 61 states, 61 states have (on average 3.262295081967213) internal successors, (199), 61 states have internal predecessors, (199), 0 states have call successors, (0), 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... [2023-12-16 00:55:41,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-12-16 00:55:41,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5238 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=3893, Invalid=16987, Unknown=0, NotChecked=0, Total=20880 [2023-12-16 00:55:41,111 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 2718 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 2631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:55:41,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2718 Valid, 2296 Invalid, 2631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 00:55:41,112 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 00:55:41,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 00:55:41,127 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:55:41,127 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 [2023-12-16 00:55:41,314 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 [2023-12-16 00:55:41,314 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (22440states) and FLOYD_HOARE automaton (currently 86 states, 61 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 145 known predicates. [2023-12-16 00:55:41,315 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 00:55:41,318 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] [2023-12-16 00:55:41,320 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:55:41,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:55:41 BoogieIcfgContainer [2023-12-16 00:55:41,321 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:55:41,322 INFO L158 Benchmark]: Toolchain (without parser) took 57853.85ms. Allocated memory was 202.4MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 144.7MB in the beginning and 656.2MB in the end (delta: -511.5MB). Peak memory consumption was 985.7MB. Max. memory is 8.0GB. [2023-12-16 00:55:41,322 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 202.4MB. Free memory is still 154.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:55:41,322 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1299.99ms. Allocated memory was 202.4MB in the beginning and 289.4MB in the end (delta: 87.0MB). Free memory was 144.7MB in the beginning and 195.5MB in the end (delta: -50.8MB). Peak memory consumption was 88.5MB. Max. memory is 8.0GB. [2023-12-16 00:55:41,322 INFO L158 Benchmark]: Boogie Procedure Inliner took 315.56ms. Allocated memory is still 289.4MB. Free memory was 195.5MB in the beginning and 190.1MB in the end (delta: 5.4MB). Peak memory consumption was 108.7MB. Max. memory is 8.0GB. [2023-12-16 00:55:41,322 INFO L158 Benchmark]: Boogie Preprocessor took 378.55ms. Allocated memory was 289.4MB in the beginning and 568.3MB in the end (delta: 278.9MB). Free memory was 190.1MB in the beginning and 380.4MB in the end (delta: -190.3MB). Peak memory consumption was 102.2MB. Max. memory is 8.0GB. [2023-12-16 00:55:41,323 INFO L158 Benchmark]: RCFGBuilder took 3055.09ms. Allocated memory was 568.3MB in the beginning and 763.4MB in the end (delta: 195.0MB). Free memory was 379.9MB in the beginning and 449.1MB in the end (delta: -69.2MB). Peak memory consumption was 147.8MB. Max. memory is 8.0GB. [2023-12-16 00:55:41,323 INFO L158 Benchmark]: TraceAbstraction took 52798.50ms. Allocated memory was 763.4MB in the beginning and 1.7GB in the end (delta: 935.3MB). Free memory was 448.1MB in the beginning and 656.2MB in the end (delta: -208.1MB). Peak memory consumption was 727.2MB. Max. memory is 8.0GB. [2023-12-16 00:55:41,324 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 202.4MB. Free memory is still 154.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1299.99ms. Allocated memory was 202.4MB in the beginning and 289.4MB in the end (delta: 87.0MB). Free memory was 144.7MB in the beginning and 195.5MB in the end (delta: -50.8MB). Peak memory consumption was 88.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 315.56ms. Allocated memory is still 289.4MB. Free memory was 195.5MB in the beginning and 190.1MB in the end (delta: 5.4MB). Peak memory consumption was 108.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 378.55ms. Allocated memory was 289.4MB in the beginning and 568.3MB in the end (delta: 278.9MB). Free memory was 190.1MB in the beginning and 380.4MB in the end (delta: -190.3MB). Peak memory consumption was 102.2MB. Max. memory is 8.0GB. * RCFGBuilder took 3055.09ms. Allocated memory was 568.3MB in the beginning and 763.4MB in the end (delta: 195.0MB). Free memory was 379.9MB in the beginning and 449.1MB in the end (delta: -69.2MB). Peak memory consumption was 147.8MB. Max. memory is 8.0GB. * TraceAbstraction took 52798.50ms. Allocated memory was 763.4MB in the beginning and 1.7GB in the end (delta: 935.3MB). Free memory was 448.1MB in the beginning and 656.2MB in the end (delta: -208.1MB). Peak memory consumption was 727.2MB. 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: 363]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 363). Cancelled while NwaCegarLoop was constructing difference of abstraction (22440states) and FLOYD_HOARE automaton (currently 86 states, 61 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 145 known predicates. - TimeoutResultAtElement [Line: 567]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 567). Cancelled while NwaCegarLoop was constructing difference of abstraction (22440states) and FLOYD_HOARE automaton (currently 86 states, 61 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 145 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 820 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 52.8s, OverallIterations: 24, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 33.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 96663 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 96663 mSDsluCounter, 82353 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47905 mSDsCounter, 953 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8173 IncrementalHoareTripleChecker+Invalid, 9126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 953 mSolverCounterUnsat, 34448 mSDtfsCounter, 8173 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1055 GetRequests, 646 SyntacticMatches, 0 SemanticMatches, 408 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8153 ImplicationChecksByTransitivity, 26.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22440occurred in iteration=23, InterpolantAutomatonStates: 206, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 31893 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 14.3s InterpolantComputationTime, 1644 NumberOfCodeBlocks, 1644 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1957 ConstructedInterpolants, 0 QuantifiedInterpolants, 24094 SizeOfPredicates, 28 NumberOfNonLiveVariables, 1759 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 34 InterpolantComputations, 19 PerfectInterpolantSequences, 208/296 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