/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.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 12:46:46,141 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 12:46:46,181 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 12:46:46,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 12:46:46,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 12:46:46,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 12:46:46,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 12:46:46,198 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 12:46:46,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 12:46:46,199 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 12:46:46,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 12:46:46,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 12:46:46,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 12:46:46,200 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 12:46:46,200 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 12:46:46,201 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 12:46:46,201 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 12:46:46,201 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 12:46:46,201 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 12:46:46,202 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 12:46:46,202 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 12:46:46,202 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 12:46:46,202 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 12:46:46,203 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 12:46:46,203 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 12:46:46,203 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 12:46:46,203 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 12:46:46,204 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 12:46:46,204 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 12:46:46,204 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 12:46:46,204 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 12:46:46,205 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 12:46:46,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:46:46,205 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 12:46:46,205 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 12:46:46,205 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 12:46:46,206 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 12:46:46,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 12:46:46,206 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 12:46:46,206 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 12:46:46,206 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 12:46:46,207 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 12:46:46,207 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 12:46:46,207 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 12:46:46,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 12:46:46,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 12:46:46,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 12:46:46,429 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 12:46:46,430 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 12:46:46,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-12-20 12:46:47,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 12:46:47,904 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 12:46:47,905 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-12-20 12:46:47,927 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f25df14e/e17e012ffcda4a2b8d841721fb0daabf/FLAG494beebaa [2023-12-20 12:46:47,940 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f25df14e/e17e012ffcda4a2b8d841721fb0daabf [2023-12-20 12:46:47,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 12:46:47,943 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 12:46:47,945 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 12:46:47,945 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 12:46:47,948 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 12:46:47,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:46:47" (1/1) ... [2023-12-20 12:46:47,949 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a60dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:46:47, skipping insertion in model container [2023-12-20 12:46:47,949 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:46:47" (1/1) ... [2023-12-20 12:46:48,044 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 12:46:48,283 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.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[6524,6537] [2023-12-20 12:46:48,322 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.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[14272,14285] [2023-12-20 12:46:48,770 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:46:48,778 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 12:46:48,806 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.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[6524,6537] [2023-12-20 12:46:48,814 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.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[14272,14285] [2023-12-20 12:46:49,131 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:46:49,151 INFO L206 MainTranslator]: Completed translation [2023-12-20 12:46:49,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:46:49 WrapperNode [2023-12-20 12:46:49,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 12:46:49,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 12:46:49,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 12:46:49,153 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 12:46:49,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:46:49" (1/1) ... [2023-12-20 12:46:49,184 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:46:49" (1/1) ... [2023-12-20 12:46:49,449 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4978 [2023-12-20 12:46:49,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 12:46:49,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 12:46:49,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 12:46:49,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 12:46:49,464 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:46:49" (1/1) ... [2023-12-20 12:46:49,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:46:49" (1/1) ... [2023-12-20 12:46:49,515 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:46:49" (1/1) ... [2023-12-20 12:46:49,618 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 12:46:49,619 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:46:49" (1/1) ... [2023-12-20 12:46:49,619 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:46:49" (1/1) ... [2023-12-20 12:46:49,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:46:49" (1/1) ... [2023-12-20 12:46:49,729 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:46:49" (1/1) ... [2023-12-20 12:46:49,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:46:49" (1/1) ... [2023-12-20 12:46:49,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:46:49" (1/1) ... [2023-12-20 12:46:49,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 12:46:49,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 12:46:49,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 12:46:49,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 12:46:49,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:46:49" (1/1) ... [2023-12-20 12:46:49,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:46:49,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:46:49,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 12:46:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 12:46:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 12:46:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 12:46:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 12:46:49,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 12:46:49,920 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 12:46:49,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 12:46:52,879 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 12:46:52,929 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 12:46:52,929 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 12:46:52,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:46:52 BoogieIcfgContainer [2023-12-20 12:46:52,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 12:46:52,932 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 12:46:52,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 12:46:52,934 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 12:46:52,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:46:47" (1/3) ... [2023-12-20 12:46:52,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ac1f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:46:52, skipping insertion in model container [2023-12-20 12:46:52,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:46:49" (2/3) ... [2023-12-20 12:46:52,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ac1f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:46:52, skipping insertion in model container [2023-12-20 12:46:52,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:46:52" (3/3) ... [2023-12-20 12:46:52,936 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-12-20 12:46:52,947 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 12:46:52,947 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 12:46:52,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 12:46:53,004 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;@54060b04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 12:46:53,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 12:46:53,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:53,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 12:46:53,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:53,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:46:53,019 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:53,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1100216757, now seen corresponding path program 1 times [2023-12-20 12:46:53,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:53,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342908275] [2023-12-20 12:46:53,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:53,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:53,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:53,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:53,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342908275] [2023-12-20 12:46:53,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342908275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:46:53,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:46:53,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:46:53,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026233599] [2023-12-20 12:46:53,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:46:53,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 12:46:53,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:53,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 12:46:53,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 12:46:53,233 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:53,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:53,316 INFO L93 Difference]: Finished difference Result 1593 states and 3145 transitions. [2023-12-20 12:46:53,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 12:46:53,318 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-20 12:46:53,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:53,335 INFO L225 Difference]: With dead ends: 1593 [2023-12-20 12:46:53,335 INFO L226 Difference]: Without dead ends: 803 [2023-12-20 12:46:53,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 12:46:53,345 INFO L413 NwaCegarLoop]: 1520 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, 1520 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 [2023-12-20 12:46:53,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1520 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:46:53,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-12-20 12:46:53,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-12-20 12:46:53,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:53,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2023-12-20 12:46:53,402 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2023-12-20 12:46:53,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:53,402 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2023-12-20 12:46:53,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:53,403 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2023-12-20 12:46:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 12:46:53,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:53,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:46:53,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 12:46:53,404 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:53,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:53,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1687022771, now seen corresponding path program 1 times [2023-12-20 12:46:53,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:53,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518728894] [2023-12-20 12:46:53,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:53,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:53,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:53,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518728894] [2023-12-20 12:46:53,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518728894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:46:53,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:46:53,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:46:53,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151639181] [2023-12-20 12:46:53,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:46:53,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:46:53,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:46:53,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:46:53,595 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:53,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:53,653 INFO L93 Difference]: Finished difference Result 835 states and 1570 transitions. [2023-12-20 12:46:53,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:46:53,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-20 12:46:53,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:53,657 INFO L225 Difference]: With dead ends: 835 [2023-12-20 12:46:53,657 INFO L226 Difference]: Without dead ends: 803 [2023-12-20 12:46:53,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:46:53,659 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 0 mSDsluCounter, 3016 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4534 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:53,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4534 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:46:53,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-12-20 12:46:53,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-12-20 12:46:53,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2023-12-20 12:46:53,684 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2023-12-20 12:46:53,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:53,684 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2023-12-20 12:46:53,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:53,684 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2023-12-20 12:46:53,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-20 12:46:53,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:53,685 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] [2023-12-20 12:46:53,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 12:46:53,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:53,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:53,686 INFO L85 PathProgramCache]: Analyzing trace with hash 613121839, now seen corresponding path program 1 times [2023-12-20 12:46:53,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:53,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936384181] [2023-12-20 12:46:53,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:53,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:53,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:53,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:53,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936384181] [2023-12-20 12:46:53,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936384181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:46:53,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:46:53,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:46:53,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600389419] [2023-12-20 12:46:53,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:46:53,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:46:53,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:53,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:46:53,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:46:53,785 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:53,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:53,891 INFO L93 Difference]: Finished difference Result 977 states and 1781 transitions. [2023-12-20 12:46:53,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 12:46:53,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-12-20 12:46:53,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:53,907 INFO L225 Difference]: With dead ends: 977 [2023-12-20 12:46:53,907 INFO L226 Difference]: Without dead ends: 948 [2023-12-20 12:46:53,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 12:46:53,909 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 4578 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:53,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 1841 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 12:46:53,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-12-20 12:46:53,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 830. [2023-12-20 12:46:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8695652173913044) internal successors, (1548), 829 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:53,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1548 transitions. [2023-12-20 12:46:53,921 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1548 transitions. Word has length 32 [2023-12-20 12:46:53,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:53,922 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1548 transitions. [2023-12-20 12:46:53,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:53,922 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1548 transitions. [2023-12-20 12:46:53,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 12:46:53,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:53,924 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] [2023-12-20 12:46:53,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 12:46:53,924 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:53,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:53,925 INFO L85 PathProgramCache]: Analyzing trace with hash 675954815, now seen corresponding path program 1 times [2023-12-20 12:46:53,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:53,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600349619] [2023-12-20 12:46:53,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:53,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:54,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:54,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600349619] [2023-12-20 12:46:54,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600349619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:46:54,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:46:54,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:46:54,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393821556] [2023-12-20 12:46:54,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:46:54,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:46:54,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:54,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:46:54,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:46:54,010 INFO L87 Difference]: Start difference. First operand 830 states and 1548 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:54,039 INFO L93 Difference]: Finished difference Result 931 states and 1707 transitions. [2023-12-20 12:46:54,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:46:54,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-20 12:46:54,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:54,042 INFO L225 Difference]: With dead ends: 931 [2023-12-20 12:46:54,042 INFO L226 Difference]: Without dead ends: 875 [2023-12-20 12:46:54,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:46:54,048 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:54,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:46:54,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-20 12:46:54,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-12-20 12:46:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8530424799081515) internal successors, (1614), 872 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1614 transitions. [2023-12-20 12:46:54,064 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1614 transitions. Word has length 34 [2023-12-20 12:46:54,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:54,065 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1614 transitions. [2023-12-20 12:46:54,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,065 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1614 transitions. [2023-12-20 12:46:54,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 12:46:54,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:54,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:46:54,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 12:46:54,070 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:54,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash 678099767, now seen corresponding path program 1 times [2023-12-20 12:46:54,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:54,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275295791] [2023-12-20 12:46:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:54,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:54,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:54,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275295791] [2023-12-20 12:46:54,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275295791] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:46:54,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:46:54,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:46:54,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117969203] [2023-12-20 12:46:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:46:54,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:46:54,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:54,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:46:54,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:46:54,213 INFO L87 Difference]: Start difference. First operand 873 states and 1614 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:54,276 INFO L93 Difference]: Finished difference Result 974 states and 1770 transitions. [2023-12-20 12:46:54,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:46:54,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-20 12:46:54,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:54,279 INFO L225 Difference]: With dead ends: 974 [2023-12-20 12:46:54,279 INFO L226 Difference]: Without dead ends: 875 [2023-12-20 12:46:54,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 12:46:54,282 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 1473 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:54,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1620 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:46:54,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-20 12:46:54,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-12-20 12:46:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8507462686567164) internal successors, (1612), 872 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1612 transitions. [2023-12-20 12:46:54,300 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1612 transitions. Word has length 34 [2023-12-20 12:46:54,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:54,301 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1612 transitions. [2023-12-20 12:46:54,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,302 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1612 transitions. [2023-12-20 12:46:54,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 12:46:54,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:54,305 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] [2023-12-20 12:46:54,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 12:46:54,305 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:54,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:54,306 INFO L85 PathProgramCache]: Analyzing trace with hash -582127364, now seen corresponding path program 1 times [2023-12-20 12:46:54,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:54,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666744640] [2023-12-20 12:46:54,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:54,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:54,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:54,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666744640] [2023-12-20 12:46:54,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666744640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:46:54,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:46:54,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:46:54,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048510015] [2023-12-20 12:46:54,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:46:54,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:46:54,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:54,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:46:54,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:46:54,458 INFO L87 Difference]: Start difference. First operand 873 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:54,486 INFO L93 Difference]: Finished difference Result 881 states and 1621 transitions. [2023-12-20 12:46:54,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:46:54,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-20 12:46:54,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:54,490 INFO L225 Difference]: With dead ends: 881 [2023-12-20 12:46:54,490 INFO L226 Difference]: Without dead ends: 879 [2023-12-20 12:46:54,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:46:54,491 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:54,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:46:54,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2023-12-20 12:46:54,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2023-12-20 12:46:54,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.8457142857142856) internal successors, (1615), 876 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1615 transitions. [2023-12-20 12:46:54,511 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1615 transitions. Word has length 35 [2023-12-20 12:46:54,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:54,511 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1615 transitions. [2023-12-20 12:46:54,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,511 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1615 transitions. [2023-12-20 12:46:54,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:46:54,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:54,512 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] [2023-12-20 12:46:54,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 12:46:54,512 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:54,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:54,513 INFO L85 PathProgramCache]: Analyzing trace with hash 2127458807, now seen corresponding path program 1 times [2023-12-20 12:46:54,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:54,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009758913] [2023-12-20 12:46:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:54,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:54,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:54,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:54,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009758913] [2023-12-20 12:46:54,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009758913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:46:54,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:46:54,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:46:54,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668805167] [2023-12-20 12:46:54,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:46:54,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:46:54,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:54,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:46:54,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:46:54,538 INFO L87 Difference]: Start difference. First operand 877 states and 1615 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:54,557 INFO L93 Difference]: Finished difference Result 991 states and 1788 transitions. [2023-12-20 12:46:54,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:46:54,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-20 12:46:54,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:54,560 INFO L225 Difference]: With dead ends: 991 [2023-12-20 12:46:54,560 INFO L226 Difference]: Without dead ends: 931 [2023-12-20 12:46:54,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:46:54,561 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:54,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:46:54,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-12-20 12:46:54,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2023-12-20 12:46:54,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 927 states have (on average 1.825242718446602) internal successors, (1692), 928 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1692 transitions. [2023-12-20 12:46:54,575 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1692 transitions. Word has length 36 [2023-12-20 12:46:54,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:54,576 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1692 transitions. [2023-12-20 12:46:54,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,576 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1692 transitions. [2023-12-20 12:46:54,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:46:54,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:54,576 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] [2023-12-20 12:46:54,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 12:46:54,576 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:54,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:54,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1501802743, now seen corresponding path program 1 times [2023-12-20 12:46:54,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:54,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198045125] [2023-12-20 12:46:54,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:54,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:54,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:54,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198045125] [2023-12-20 12:46:54,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198045125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:46:54,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:46:54,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:46:54,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307352162] [2023-12-20 12:46:54,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:46:54,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:46:54,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:54,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:46:54,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:46:54,605 INFO L87 Difference]: Start difference. First operand 929 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:54,625 INFO L93 Difference]: Finished difference Result 1211 states and 2112 transitions. [2023-12-20 12:46:54,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:46:54,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-20 12:46:54,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:54,628 INFO L225 Difference]: With dead ends: 1211 [2023-12-20 12:46:54,629 INFO L226 Difference]: Without dead ends: 1058 [2023-12-20 12:46:54,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:46:54,630 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:54,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:46:54,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2023-12-20 12:46:54,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1056. [2023-12-20 12:46:54,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1054 states have (on average 1.777988614800759) internal successors, (1874), 1055 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1874 transitions. [2023-12-20 12:46:54,648 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1874 transitions. Word has length 36 [2023-12-20 12:46:54,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:54,649 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1874 transitions. [2023-12-20 12:46:54,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1874 transitions. [2023-12-20 12:46:54,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:46:54,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:54,650 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] [2023-12-20 12:46:54,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 12:46:54,651 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:54,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:54,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1904431113, now seen corresponding path program 1 times [2023-12-20 12:46:54,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:54,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752222666] [2023-12-20 12:46:54,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:54,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:54,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:54,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:54,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752222666] [2023-12-20 12:46:54,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752222666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:46:54,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:46:54,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:46:54,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648366753] [2023-12-20 12:46:54,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:46:54,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:46:54,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:54,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:46:54,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:46:54,692 INFO L87 Difference]: Start difference. First operand 1056 states and 1874 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:54,716 INFO L93 Difference]: Finished difference Result 1568 states and 2616 transitions. [2023-12-20 12:46:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:46:54,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-20 12:46:54,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:54,722 INFO L225 Difference]: With dead ends: 1568 [2023-12-20 12:46:54,722 INFO L226 Difference]: Without dead ends: 1288 [2023-12-20 12:46:54,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:46:54,724 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:54,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:46:54,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-12-20 12:46:54,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2023-12-20 12:46:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1284 states have (on average 1.705607476635514) internal successors, (2190), 1285 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2190 transitions. [2023-12-20 12:46:54,745 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2190 transitions. Word has length 36 [2023-12-20 12:46:54,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:54,745 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 2190 transitions. [2023-12-20 12:46:54,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2190 transitions. [2023-12-20 12:46:54,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:46:54,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:54,746 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] [2023-12-20 12:46:54,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 12:46:54,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:54,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:54,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1853448570, now seen corresponding path program 1 times [2023-12-20 12:46:54,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:54,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442709119] [2023-12-20 12:46:54,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:54,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:46:54,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:54,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442709119] [2023-12-20 12:46:54,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442709119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:46:54,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:46:54,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:46:54,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510103164] [2023-12-20 12:46:54,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:46:54,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:46:54,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:54,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:46:54,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:46:54,839 INFO L87 Difference]: Start difference. First operand 1286 states and 2190 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:54,912 INFO L93 Difference]: Finished difference Result 2794 states and 4342 transitions. [2023-12-20 12:46:54,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:46:54,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-20 12:46:54,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:54,919 INFO L225 Difference]: With dead ends: 2794 [2023-12-20 12:46:54,919 INFO L226 Difference]: Without dead ends: 2424 [2023-12-20 12:46:54,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:46:54,920 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 3033 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 3141 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:54,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 3141 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:46:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2023-12-20 12:46:54,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 1726. [2023-12-20 12:46:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.6299303944315546) internal successors, (2810), 1725 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2810 transitions. [2023-12-20 12:46:54,951 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2810 transitions. Word has length 50 [2023-12-20 12:46:54,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:54,952 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2810 transitions. [2023-12-20 12:46:54,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2810 transitions. [2023-12-20 12:46:54,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:46:54,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:54,952 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] [2023-12-20 12:46:54,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 12:46:54,953 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:54,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:54,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1815862662, now seen corresponding path program 1 times [2023-12-20 12:46:54,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:54,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775345074] [2023-12-20 12:46:54,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:54,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 12:46:55,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:55,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775345074] [2023-12-20 12:46:55,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775345074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:46:55,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:46:55,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:46:55,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227357542] [2023-12-20 12:46:55,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:46:55,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:46:55,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:55,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:46:55,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:46:55,007 INFO L87 Difference]: Start difference. First operand 1726 states and 2810 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:55,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:55,094 INFO L93 Difference]: Finished difference Result 3302 states and 5062 transitions. [2023-12-20 12:46:55,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:46:55,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-20 12:46:55,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:55,102 INFO L225 Difference]: With dead ends: 3302 [2023-12-20 12:46:55,102 INFO L226 Difference]: Without dead ends: 2792 [2023-12-20 12:46:55,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:46:55,104 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 3035 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3035 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:55,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3035 Valid, 3130 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:46:55,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2023-12-20 12:46:55,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2418. [2023-12-20 12:46:55,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2416 states have (on average 1.5653973509933774) internal successors, (3782), 2417 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:55,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3782 transitions. [2023-12-20 12:46:55,148 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3782 transitions. Word has length 50 [2023-12-20 12:46:55,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:55,149 INFO L495 AbstractCegarLoop]: Abstraction has 2418 states and 3782 transitions. [2023-12-20 12:46:55,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:55,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3782 transitions. [2023-12-20 12:46:55,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:46:55,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:55,150 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] [2023-12-20 12:46:55,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 12:46:55,150 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:55,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:55,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1590371194, now seen corresponding path program 1 times [2023-12-20 12:46:55,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:55,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426212181] [2023-12-20 12:46:55,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:55,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:55,210 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 12:46:55,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:55,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426212181] [2023-12-20 12:46:55,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426212181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:46:55,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:46:55,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:46:55,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266698428] [2023-12-20 12:46:55,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:46:55,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:46:55,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:55,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:46:55,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:46:55,212 INFO L87 Difference]: Start difference. First operand 2418 states and 3782 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:55,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:55,314 INFO L93 Difference]: Finished difference Result 3810 states and 5778 transitions. [2023-12-20 12:46:55,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:46:55,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 50 [2023-12-20 12:46:55,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:55,323 INFO L225 Difference]: With dead ends: 3810 [2023-12-20 12:46:55,323 INFO L226 Difference]: Without dead ends: 3300 [2023-12-20 12:46:55,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:46:55,324 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 3041 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:55,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3134 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:46:55,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2023-12-20 12:46:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 2926. [2023-12-20 12:46:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5383036935704515) internal successors, (4498), 2925 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:55,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4498 transitions. [2023-12-20 12:46:55,383 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4498 transitions. Word has length 50 [2023-12-20 12:46:55,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:55,383 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 4498 transitions. [2023-12-20 12:46:55,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4498 transitions. [2023-12-20 12:46:55,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 12:46:55,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:55,384 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] [2023-12-20 12:46:55,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 12:46:55,384 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:55,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:55,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1183432324, now seen corresponding path program 1 times [2023-12-20 12:46:55,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:55,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938593975] [2023-12-20 12:46:55,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:55,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:55,466 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:55,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:55,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938593975] [2023-12-20 12:46:55,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938593975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:46:55,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:46:55,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:46:55,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628636812] [2023-12-20 12:46:55,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:46:55,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:46:55,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:55,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:46:55,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:46:55,468 INFO L87 Difference]: Start difference. First operand 2926 states and 4498 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:55,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:55,523 INFO L93 Difference]: Finished difference Result 5078 states and 7536 transitions. [2023-12-20 12:46:55,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:46:55,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-20 12:46:55,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:55,530 INFO L225 Difference]: With dead ends: 5078 [2023-12-20 12:46:55,530 INFO L226 Difference]: Without dead ends: 2928 [2023-12-20 12:46:55,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:46:55,533 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 29 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:55,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3011 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:46:55,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2023-12-20 12:46:55,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2926. [2023-12-20 12:46:55,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5212038303693571) internal successors, (4448), 2925 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4448 transitions. [2023-12-20 12:46:55,595 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4448 transitions. Word has length 51 [2023-12-20 12:46:55,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:55,596 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 4448 transitions. [2023-12-20 12:46:55,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:55,596 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4448 transitions. [2023-12-20 12:46:55,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 12:46:55,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:55,597 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] [2023-12-20 12:46:55,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 12:46:55,597 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:55,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:55,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1165828046, now seen corresponding path program 1 times [2023-12-20 12:46:55,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:55,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369161356] [2023-12-20 12:46:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:55,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:55,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:55,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:55,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369161356] [2023-12-20 12:46:55,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369161356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:46:55,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:46:55,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:46:55,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054804729] [2023-12-20 12:46:55,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:46:55,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:46:55,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:55,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:46:55,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:46:55,644 INFO L87 Difference]: Start difference. First operand 2926 states and 4448 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:55,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:55,684 INFO L93 Difference]: Finished difference Result 3772 states and 5635 transitions. [2023-12-20 12:46:55,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:46:55,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-20 12:46:55,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:55,689 INFO L225 Difference]: With dead ends: 3772 [2023-12-20 12:46:55,689 INFO L226 Difference]: Without dead ends: 1622 [2023-12-20 12:46:55,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:46:55,691 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 23 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:55,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3008 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:46:55,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2023-12-20 12:46:55,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1615. [2023-12-20 12:46:55,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1613 states have (on average 1.6261624302541848) internal successors, (2623), 1614 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:55,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2623 transitions. [2023-12-20 12:46:55,723 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2623 transitions. Word has length 52 [2023-12-20 12:46:55,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:55,723 INFO L495 AbstractCegarLoop]: Abstraction has 1615 states and 2623 transitions. [2023-12-20 12:46:55,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:55,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2623 transitions. [2023-12-20 12:46:55,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 12:46:55,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:55,724 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] [2023-12-20 12:46:55,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 12:46:55,724 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:55,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:55,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2138930058, now seen corresponding path program 1 times [2023-12-20 12:46:55,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:55,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478305035] [2023-12-20 12:46:55,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:55,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:55,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:55,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478305035] [2023-12-20 12:46:55,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478305035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:46:55,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:46:55,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:46:55,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425259719] [2023-12-20 12:46:55,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:46:55,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:46:55,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:55,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:46:55,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:46:55,789 INFO L87 Difference]: Start difference. First operand 1615 states and 2623 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:55,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:46:55,815 INFO L93 Difference]: Finished difference Result 2033 states and 3201 transitions. [2023-12-20 12:46:55,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:46:55,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-20 12:46:55,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:46:55,825 INFO L225 Difference]: With dead ends: 2033 [2023-12-20 12:46:55,826 INFO L226 Difference]: Without dead ends: 1203 [2023-12-20 12:46:55,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:46:55,828 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 25 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:55,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:46:55,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-12-20 12:46:55,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2023-12-20 12:46:55,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1199 states have (on average 1.6997497914929107) internal successors, (2038), 1200 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:55,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 2038 transitions. [2023-12-20 12:46:55,859 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 2038 transitions. Word has length 53 [2023-12-20 12:46:55,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:46:55,859 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 2038 transitions. [2023-12-20 12:46:55,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:46:55,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 2038 transitions. [2023-12-20 12:46:55,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 12:46:55,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:46:55,860 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] [2023-12-20 12:46:55,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 12:46:55,860 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:46:55,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:46:55,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1489407768, now seen corresponding path program 1 times [2023-12-20 12:46:55,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:46:55,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305482925] [2023-12-20 12:46:55,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:55,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:46:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:46:57,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:46:57,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305482925] [2023-12-20 12:46:57,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305482925] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:46:57,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586450142] [2023-12-20 12:46:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:46:57,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:46:57,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:46:57,938 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:46:57,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 12:46:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:46:58,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 12:46:58,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:46:58,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:46:58,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:46:58,255 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:46:58,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586450142] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:46:58,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:46:58,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-20 12:46:58,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63870824] [2023-12-20 12:46:58,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:46:58,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 12:46:58,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:46:58,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 12:46:58,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-20 12:46:58,257 INFO L87 Difference]: Start difference. First operand 1201 states and 2038 transitions. Second operand has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:00,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:47:00,843 INFO L93 Difference]: Finished difference Result 3344 states and 4834 transitions. [2023-12-20 12:47:00,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-20 12:47:00,844 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 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 55 [2023-12-20 12:47:00,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:47:00,854 INFO L225 Difference]: With dead ends: 3344 [2023-12-20 12:47:00,854 INFO L226 Difference]: Without dead ends: 2928 [2023-12-20 12:47:00,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=744, Invalid=2916, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 12:47:00,857 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 14309 mSDsluCounter, 4745 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14309 SdHoareTripleChecker+Valid, 6236 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:47:00,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14309 Valid, 6236 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 12:47:00,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2023-12-20 12:47:00,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2672. [2023-12-20 12:47:00,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2670 states have (on average 1.4576779026217228) internal successors, (3892), 2671 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:00,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 3892 transitions. [2023-12-20 12:47:00,918 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 3892 transitions. Word has length 55 [2023-12-20 12:47:00,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:47:00,918 INFO L495 AbstractCegarLoop]: Abstraction has 2672 states and 3892 transitions. [2023-12-20 12:47:00,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:00,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 3892 transitions. [2023-12-20 12:47:00,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 12:47:00,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:47:00,919 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:47:00,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 12:47:01,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-20 12:47:01,125 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:47:01,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:47:01,126 INFO L85 PathProgramCache]: Analyzing trace with hash -294784256, now seen corresponding path program 1 times [2023-12-20 12:47:01,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:47:01,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113979401] [2023-12-20 12:47:01,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:01,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:47:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:01,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:01,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:47:01,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113979401] [2023-12-20 12:47:01,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113979401] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:47:01,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113773461] [2023-12-20 12:47:01,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:01,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:47:01,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:47:01,338 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:47:01,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 12:47:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:01,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:47:01,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:47:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:01,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:47:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:02,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113773461] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:47:02,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:47:02,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-12-20 12:47:02,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947115432] [2023-12-20 12:47:02,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:47:02,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 12:47:02,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:47:02,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 12:47:02,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-12-20 12:47:02,660 INFO L87 Difference]: Start difference. First operand 2672 states and 3892 transitions. Second operand has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:47:03,308 INFO L93 Difference]: Finished difference Result 6001 states and 8124 transitions. [2023-12-20 12:47:03,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 12:47:03,308 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 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 56 [2023-12-20 12:47:03,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:47:03,314 INFO L225 Difference]: With dead ends: 6001 [2023-12-20 12:47:03,314 INFO L226 Difference]: Without dead ends: 4422 [2023-12-20 12:47:03,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=349, Invalid=1211, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 12:47:03,317 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 6153 mSDsluCounter, 10594 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6153 SdHoareTripleChecker+Valid, 12079 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:47:03,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6153 Valid, 12079 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:47:03,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2023-12-20 12:47:03,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4212. [2023-12-20 12:47:03,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4212 states, 4210 states have (on average 1.3888361045130642) internal successors, (5847), 4211 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 5847 transitions. [2023-12-20 12:47:03,449 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 5847 transitions. Word has length 56 [2023-12-20 12:47:03,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:47:03,449 INFO L495 AbstractCegarLoop]: Abstraction has 4212 states and 5847 transitions. [2023-12-20 12:47:03,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:03,449 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 5847 transitions. [2023-12-20 12:47:03,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 12:47:03,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:47:03,450 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:47:03,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 12:47:03,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-20 12:47:03,655 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:47:03,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:47:03,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2030773760, now seen corresponding path program 1 times [2023-12-20 12:47:03,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:47:03,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454648253] [2023-12-20 12:47:03,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:03,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:47:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:03,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:47:03,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454648253] [2023-12-20 12:47:03,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454648253] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:47:03,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099745960] [2023-12-20 12:47:03,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:03,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:47:03,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:47:03,910 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:47:03,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 12:47:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:03,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:47:03,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:47:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:04,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:47:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:04,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099745960] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:47:04,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:47:04,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 12:47:04,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893531315] [2023-12-20 12:47:04,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:47:04,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 12:47:04,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:47:04,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 12:47:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-20 12:47:04,947 INFO L87 Difference]: Start difference. First operand 4212 states and 5847 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:05,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:47:05,572 INFO L93 Difference]: Finished difference Result 7561 states and 10123 transitions. [2023-12-20 12:47:05,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 12:47:05,573 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 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 56 [2023-12-20 12:47:05,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:47:05,578 INFO L225 Difference]: With dead ends: 7561 [2023-12-20 12:47:05,578 INFO L226 Difference]: Without dead ends: 4560 [2023-12-20 12:47:05,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 12:47:05,581 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 13445 mSDsluCounter, 4640 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13445 SdHoareTripleChecker+Valid, 6133 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:47:05,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13445 Valid, 6133 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:47:05,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4560 states. [2023-12-20 12:47:05,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4560 to 4272. [2023-12-20 12:47:05,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 4270 states have (on average 1.3740046838407494) internal successors, (5867), 4271 states have internal predecessors, (5867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:05,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 5867 transitions. [2023-12-20 12:47:05,678 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 5867 transitions. Word has length 56 [2023-12-20 12:47:05,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:47:05,678 INFO L495 AbstractCegarLoop]: Abstraction has 4272 states and 5867 transitions. [2023-12-20 12:47:05,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 5867 transitions. [2023-12-20 12:47:05,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 12:47:05,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:47:05,679 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:47:05,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 12:47:05,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 12:47:05,884 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:47:05,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:47:05,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1035298560, now seen corresponding path program 1 times [2023-12-20 12:47:05,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:47:05,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787228337] [2023-12-20 12:47:05,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:05,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:47:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:06,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:47:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787228337] [2023-12-20 12:47:06,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787228337] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:47:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882494568] [2023-12-20 12:47:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:06,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:47:06,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:47:06,075 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:47:06,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 12:47:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:06,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:47:06,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:47:06,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:06,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:47:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:07,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882494568] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:47:07,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:47:07,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-20 12:47:07,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546626778] [2023-12-20 12:47:07,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:47:07,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 12:47:07,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:47:07,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 12:47:07,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-12-20 12:47:07,083 INFO L87 Difference]: Start difference. First operand 4272 states and 5867 transitions. Second operand has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 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) [2023-12-20 12:47:07,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:47:07,794 INFO L93 Difference]: Finished difference Result 10853 states and 14150 transitions. [2023-12-20 12:47:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 12:47:07,795 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 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 56 [2023-12-20 12:47:07,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:47:07,809 INFO L225 Difference]: With dead ends: 10853 [2023-12-20 12:47:07,810 INFO L226 Difference]: Without dead ends: 8091 [2023-12-20 12:47:07,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 12:47:07,814 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 10515 mSDsluCounter, 9054 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10515 SdHoareTripleChecker+Valid, 10538 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:47:07,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10515 Valid, 10538 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:47:07,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8091 states. [2023-12-20 12:47:08,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8091 to 7571. [2023-12-20 12:47:08,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7571 states, 7569 states have (on average 1.3065134099616857) internal successors, (9889), 7570 states have internal predecessors, (9889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:08,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7571 states to 7571 states and 9889 transitions. [2023-12-20 12:47:08,039 INFO L78 Accepts]: Start accepts. Automaton has 7571 states and 9889 transitions. Word has length 56 [2023-12-20 12:47:08,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:47:08,039 INFO L495 AbstractCegarLoop]: Abstraction has 7571 states and 9889 transitions. [2023-12-20 12:47:08,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 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) [2023-12-20 12:47:08,039 INFO L276 IsEmpty]: Start isEmpty. Operand 7571 states and 9889 transitions. [2023-12-20 12:47:08,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 12:47:08,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:47:08,041 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 12:47:08,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 12:47:08,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:47:08,246 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:47:08,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:47:08,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1142870954, now seen corresponding path program 1 times [2023-12-20 12:47:08,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:47:08,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146332746] [2023-12-20 12:47:08,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:08,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:47:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:09,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:47:09,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146332746] [2023-12-20 12:47:09,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146332746] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:47:09,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184582996] [2023-12-20 12:47:09,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:09,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:47:09,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:47:09,210 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:47:09,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 12:47:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:09,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 12:47:09,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:47:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:09,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:47:10,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:10,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184582996] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:47:10,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:47:10,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 39 [2023-12-20 12:47:10,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837306643] [2023-12-20 12:47:10,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:47:10,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-20 12:47:10,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:47:10,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-20 12:47:10,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 12:47:10,639 INFO L87 Difference]: Start difference. First operand 7571 states and 9889 transitions. Second operand has 39 states, 39 states have (on average 3.8974358974358974) internal successors, (152), 39 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) [2023-12-20 12:47:29,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:47:29,215 INFO L93 Difference]: Finished difference Result 11787 states and 15049 transitions. [2023-12-20 12:47:29,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2023-12-20 12:47:29,215 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.8974358974358974) internal successors, (152), 39 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 57 [2023-12-20 12:47:29,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:47:29,225 INFO L225 Difference]: With dead ends: 11787 [2023-12-20 12:47:29,226 INFO L226 Difference]: Without dead ends: 8173 [2023-12-20 12:47:29,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13453 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=6891, Invalid=32115, Unknown=0, NotChecked=0, Total=39006 [2023-12-20 12:47:29,235 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 13974 mSDsluCounter, 26232 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13974 SdHoareTripleChecker+Valid, 27808 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:47:29,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13974 Valid, 27808 Invalid, 1940 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [128 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 12:47:29,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8173 states. [2023-12-20 12:47:29,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8173 to 6461. [2023-12-20 12:47:29,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6461 states, 6459 states have (on average 1.3147546059761572) internal successors, (8492), 6460 states have internal predecessors, (8492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6461 states to 6461 states and 8492 transitions. [2023-12-20 12:47:29,430 INFO L78 Accepts]: Start accepts. Automaton has 6461 states and 8492 transitions. Word has length 57 [2023-12-20 12:47:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:47:29,430 INFO L495 AbstractCegarLoop]: Abstraction has 6461 states and 8492 transitions. [2023-12-20 12:47:29,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.8974358974358974) internal successors, (152), 39 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) [2023-12-20 12:47:29,430 INFO L276 IsEmpty]: Start isEmpty. Operand 6461 states and 8492 transitions. [2023-12-20 12:47:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 12:47:29,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:47:29,431 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] [2023-12-20 12:47:29,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 12:47:29,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:47:29,636 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:47:29,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:47:29,636 INFO L85 PathProgramCache]: Analyzing trace with hash 200986498, now seen corresponding path program 1 times [2023-12-20 12:47:29,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:47:29,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934000444] [2023-12-20 12:47:29,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:29,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:47:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:30,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:30,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:47:30,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934000444] [2023-12-20 12:47:30,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934000444] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:47:30,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113440025] [2023-12-20 12:47:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:30,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:47:30,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:47:30,237 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:47:30,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 12:47:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:30,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 12:47:30,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:47:31,030 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:31,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:47:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:32,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113440025] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:47:32,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:47:32,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 13] total 36 [2023-12-20 12:47:32,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906447268] [2023-12-20 12:47:32,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:47:32,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 12:47:32,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:47:32,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 12:47:32,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1096, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 12:47:32,003 INFO L87 Difference]: Start difference. First operand 6461 states and 8492 transitions. Second operand has 36 states, 36 states have (on average 4.361111111111111) internal successors, (157), 36 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:33,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:47:33,990 INFO L93 Difference]: Finished difference Result 8057 states and 10458 transitions. [2023-12-20 12:47:33,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-20 12:47:33,995 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.361111111111111) internal successors, (157), 36 states have internal predecessors, (157), 0 states have call successors, (0), 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 58 [2023-12-20 12:47:33,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:47:34,003 INFO L225 Difference]: With dead ends: 8057 [2023-12-20 12:47:34,003 INFO L226 Difference]: Without dead ends: 5289 [2023-12-20 12:47:34,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=912, Invalid=3378, Unknown=0, NotChecked=0, Total=4290 [2023-12-20 12:47:34,007 INFO L413 NwaCegarLoop]: 1486 mSDtfsCounter, 15581 mSDsluCounter, 19154 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15581 SdHoareTripleChecker+Valid, 20640 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:47:34,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15581 Valid, 20640 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 12:47:34,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5289 states. [2023-12-20 12:47:34,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5289 to 5083. [2023-12-20 12:47:34,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5083 states, 5081 states have (on average 1.3332021255658335) internal successors, (6774), 5082 states have internal predecessors, (6774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5083 states to 5083 states and 6774 transitions. [2023-12-20 12:47:34,211 INFO L78 Accepts]: Start accepts. Automaton has 5083 states and 6774 transitions. Word has length 58 [2023-12-20 12:47:34,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:47:34,211 INFO L495 AbstractCegarLoop]: Abstraction has 5083 states and 6774 transitions. [2023-12-20 12:47:34,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.361111111111111) internal successors, (157), 36 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:34,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5083 states and 6774 transitions. [2023-12-20 12:47:34,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 12:47:34,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:47:34,212 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] [2023-12-20 12:47:34,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 12:47:34,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:47:34,417 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:47:34,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:47:34,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1726555136, now seen corresponding path program 1 times [2023-12-20 12:47:34,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:47:34,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370412660] [2023-12-20 12:47:34,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:34,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:47:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:34,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:34,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:47:34,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370412660] [2023-12-20 12:47:34,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370412660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:47:34,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843700751] [2023-12-20 12:47:34,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:34,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:47:34,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:47:34,811 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:47:34,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 12:47:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:34,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 12:47:34,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:47:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:36,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:47:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:38,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843700751] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:47:38,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:47:38,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 17] total 42 [2023-12-20 12:47:38,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440501041] [2023-12-20 12:47:38,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:47:38,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-20 12:47:38,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:47:38,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-20 12:47:38,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1511, Unknown=0, NotChecked=0, Total=1722 [2023-12-20 12:47:38,221 INFO L87 Difference]: Start difference. First operand 5083 states and 6774 transitions. Second operand has 42 states, 42 states have (on average 3.6666666666666665) internal successors, (154), 42 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:45,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:47:45,825 INFO L93 Difference]: Finished difference Result 8994 states and 11617 transitions. [2023-12-20 12:47:45,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-20 12:47:45,825 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.6666666666666665) internal successors, (154), 42 states have internal predecessors, (154), 0 states have call successors, (0), 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 59 [2023-12-20 12:47:45,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:47:45,832 INFO L225 Difference]: With dead ends: 8994 [2023-12-20 12:47:45,833 INFO L226 Difference]: Without dead ends: 6842 [2023-12-20 12:47:45,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3738 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2741, Invalid=9915, Unknown=0, NotChecked=0, Total=12656 [2023-12-20 12:47:45,837 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 20817 mSDsluCounter, 18244 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20817 SdHoareTripleChecker+Valid, 19756 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:47:45,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20817 Valid, 19756 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 12:47:45,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6842 states. [2023-12-20 12:47:45,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6842 to 3911. [2023-12-20 12:47:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3911 states, 3909 states have (on average 1.363008442056792) internal successors, (5328), 3910 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:45,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 5328 transitions. [2023-12-20 12:47:45,999 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 5328 transitions. Word has length 59 [2023-12-20 12:47:45,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:47:45,999 INFO L495 AbstractCegarLoop]: Abstraction has 3911 states and 5328 transitions. [2023-12-20 12:47:45,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.6666666666666665) internal successors, (154), 42 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:45,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 5328 transitions. [2023-12-20 12:47:46,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 12:47:46,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:47:46,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:47:46,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 12:47:46,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:47:46,208 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:47:46,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:47:46,209 INFO L85 PathProgramCache]: Analyzing trace with hash -314623887, now seen corresponding path program 1 times [2023-12-20 12:47:46,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:47:46,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455585875] [2023-12-20 12:47:46,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:46,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:47:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:46,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:47:46,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455585875] [2023-12-20 12:47:46,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455585875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:47:46,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:47:46,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:47:46,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117625677] [2023-12-20 12:47:46,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:47:46,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:47:46,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:47:46,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:47:46,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:47:46,284 INFO L87 Difference]: Start difference. First operand 3911 states and 5328 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:51,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:47:51,268 INFO L93 Difference]: Finished difference Result 6166 states and 9637 transitions. [2023-12-20 12:47:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:47:51,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 12:47:51,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:47:51,274 INFO L225 Difference]: With dead ends: 6166 [2023-12-20 12:47:51,274 INFO L226 Difference]: Without dead ends: 5413 [2023-12-20 12:47:51,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:47:51,276 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 2312 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2312 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-20 12:47:51,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2312 Valid, 756 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-20 12:47:51,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5413 states. [2023-12-20 12:47:51,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5413 to 5413. [2023-12-20 12:47:51,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5413 states, 5411 states have (on average 1.375346516355572) internal successors, (7442), 5412 states have internal predecessors, (7442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:51,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5413 states to 5413 states and 7442 transitions. [2023-12-20 12:47:51,439 INFO L78 Accepts]: Start accepts. Automaton has 5413 states and 7442 transitions. Word has length 66 [2023-12-20 12:47:51,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:47:51,440 INFO L495 AbstractCegarLoop]: Abstraction has 5413 states and 7442 transitions. [2023-12-20 12:47:51,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:47:51,440 INFO L276 IsEmpty]: Start isEmpty. Operand 5413 states and 7442 transitions. [2023-12-20 12:47:51,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 12:47:51,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:47:51,441 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:47:51,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 12:47:51,441 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:47:51,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:47:51,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1874846004, now seen corresponding path program 1 times [2023-12-20 12:47:51,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:47:51,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251645229] [2023-12-20 12:47:51,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:51,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:47:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:52,024 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:52,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:47:52,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251645229] [2023-12-20 12:47:52,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251645229] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:47:52,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064245472] [2023-12-20 12:47:52,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:47:52,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:47:52,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:47:52,025 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:47:52,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 12:47:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:47:52,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 12:47:52,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:47:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:52,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:47:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:47:53,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064245472] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:47:53,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:47:53,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-20 12:47:53,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417192149] [2023-12-20 12:47:53,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:47:53,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 12:47:53,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:47:53,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 12:47:53,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1139, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 12:47:53,743 INFO L87 Difference]: Start difference. First operand 5413 states and 7442 transitions. Second operand has 36 states, 36 states have (on average 6.944444444444445) internal successors, (250), 35 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:48:00,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:48:00,979 INFO L93 Difference]: Finished difference Result 9694 states and 12722 transitions. [2023-12-20 12:48:00,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-12-20 12:48:00,979 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.944444444444445) internal successors, (250), 35 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-20 12:48:00,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:48:00,986 INFO L225 Difference]: With dead ends: 9694 [2023-12-20 12:48:00,986 INFO L226 Difference]: Without dead ends: 7284 [2023-12-20 12:48:00,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9657 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=4374, Invalid=25038, Unknown=0, NotChecked=0, Total=29412 [2023-12-20 12:48:00,989 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 25172 mSDsluCounter, 15972 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25172 SdHoareTripleChecker+Valid, 17512 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 12:48:00,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25172 Valid, 17512 Invalid, 1901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 12:48:00,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7284 states. [2023-12-20 12:48:01,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7284 to 6421. [2023-12-20 12:48:01,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6421 states, 6419 states have (on average 1.3481850755569402) internal successors, (8654), 6420 states have internal predecessors, (8654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:48:01,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6421 states to 6421 states and 8654 transitions. [2023-12-20 12:48:01,235 INFO L78 Accepts]: Start accepts. Automaton has 6421 states and 8654 transitions. Word has length 93 [2023-12-20 12:48:01,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:48:01,235 INFO L495 AbstractCegarLoop]: Abstraction has 6421 states and 8654 transitions. [2023-12-20 12:48:01,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 6.944444444444445) internal successors, (250), 35 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:48:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 6421 states and 8654 transitions. [2023-12-20 12:48:01,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 12:48:01,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:48:01,236 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:48:01,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 12:48:01,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-20 12:48:01,441 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:48:01,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:48:01,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1009068314, now seen corresponding path program 1 times [2023-12-20 12:48:01,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:48:01,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362496911] [2023-12-20 12:48:01,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:48:01,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:48:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:48:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 51 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 12:48:02,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:48:02,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362496911] [2023-12-20 12:48:02,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362496911] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:48:02,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158992164] [2023-12-20 12:48:02,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:48:02,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:48:02,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:48:02,093 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:48:02,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 12:48:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:48:02,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 12:48:02,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:48:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:48:02,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:48:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 13 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:48:03,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158992164] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:48:03,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:48:03,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 38 [2023-12-20 12:48:03,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712649799] [2023-12-20 12:48:03,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:48:03,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-20 12:48:03,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:48:03,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-20 12:48:03,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1336, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 12:48:03,962 INFO L87 Difference]: Start difference. First operand 6421 states and 8654 transitions. Second operand has 39 states, 39 states have (on average 6.487179487179487) internal successors, (253), 38 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:48:10,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:48:10,309 INFO L93 Difference]: Finished difference Result 9229 states and 12120 transitions. [2023-12-20 12:48:10,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-12-20 12:48:10,309 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.487179487179487) internal successors, (253), 38 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-20 12:48:10,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:48:10,314 INFO L225 Difference]: With dead ends: 9229 [2023-12-20 12:48:10,314 INFO L226 Difference]: Without dead ends: 6533 [2023-12-20 12:48:10,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5217 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2715, Invalid=15645, Unknown=0, NotChecked=0, Total=18360 [2023-12-20 12:48:10,317 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 21877 mSDsluCounter, 20805 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21877 SdHoareTripleChecker+Valid, 22372 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:48:10,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21877 Valid, 22372 Invalid, 2413 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 12:48:10,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6533 states. [2023-12-20 12:48:10,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6533 to 6357. [2023-12-20 12:48:10,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6357 states, 6355 states have (on average 1.3413060582218725) internal successors, (8524), 6356 states have internal predecessors, (8524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:48:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6357 states to 6357 states and 8524 transitions. [2023-12-20 12:48:10,590 INFO L78 Accepts]: Start accepts. Automaton has 6357 states and 8524 transitions. Word has length 93 [2023-12-20 12:48:10,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:48:10,590 INFO L495 AbstractCegarLoop]: Abstraction has 6357 states and 8524 transitions. [2023-12-20 12:48:10,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.487179487179487) internal successors, (253), 38 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:48:10,590 INFO L276 IsEmpty]: Start isEmpty. Operand 6357 states and 8524 transitions. [2023-12-20 12:48:10,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 12:48:10,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:48:10,592 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:48:10,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-20 12:48:10,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-20 12:48:10,797 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:48:10,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:48:10,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1951891590, now seen corresponding path program 1 times [2023-12-20 12:48:10,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:48:10,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159195221] [2023-12-20 12:48:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:48:10,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:48:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:48:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 23 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:48:11,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:48:11,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159195221] [2023-12-20 12:48:11,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159195221] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:48:11,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903346322] [2023-12-20 12:48:11,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:48:11,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:48:11,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:48:11,530 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:48:11,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 12:48:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:48:11,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-20 12:48:11,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:48:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 23 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:48:12,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:48:15,251 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 23 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:48:15,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903346322] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:48:15,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:48:15,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 54 [2023-12-20 12:48:15,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102195103] [2023-12-20 12:48:15,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:48:15,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-20 12:48:15,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:48:15,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-20 12:48:15,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=2604, Unknown=0, NotChecked=0, Total=2862 [2023-12-20 12:48:15,256 INFO L87 Difference]: Start difference. First operand 6357 states and 8524 transitions. Second operand has 54 states, 54 states have (on average 4.796296296296297) internal successors, (259), 54 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:48:27,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:48:27,871 INFO L93 Difference]: Finished difference Result 16069 states and 20337 transitions. [2023-12-20 12:48:27,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-12-20 12:48:27,871 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.796296296296297) internal successors, (259), 54 states have internal predecessors, (259), 0 states have call successors, (0), 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 95 [2023-12-20 12:48:27,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:48:27,882 INFO L225 Difference]: With dead ends: 16069 [2023-12-20 12:48:27,882 INFO L226 Difference]: Without dead ends: 14558 [2023-12-20 12:48:27,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9546 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=5460, Invalid=23270, Unknown=0, NotChecked=0, Total=28730 [2023-12-20 12:48:27,897 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 18452 mSDsluCounter, 24292 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18452 SdHoareTripleChecker+Valid, 25867 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 12:48:27,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18452 Valid, 25867 Invalid, 2781 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [154 Valid, 2627 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 12:48:27,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14558 states. [2023-12-20 12:48:28,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14558 to 7469. [2023-12-20 12:48:28,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7469 states, 7467 states have (on average 1.319673228873711) internal successors, (9854), 7468 states have internal predecessors, (9854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:48:28,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7469 states to 7469 states and 9854 transitions. [2023-12-20 12:48:28,313 INFO L78 Accepts]: Start accepts. Automaton has 7469 states and 9854 transitions. Word has length 95 [2023-12-20 12:48:28,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:48:28,313 INFO L495 AbstractCegarLoop]: Abstraction has 7469 states and 9854 transitions. [2023-12-20 12:48:28,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.796296296296297) internal successors, (259), 54 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:48:28,314 INFO L276 IsEmpty]: Start isEmpty. Operand 7469 states and 9854 transitions. [2023-12-20 12:48:28,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 12:48:28,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:48:28,315 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:48:28,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 12:48:28,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 12:48:28,520 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:48:28,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:48:28,521 INFO L85 PathProgramCache]: Analyzing trace with hash -861125406, now seen corresponding path program 1 times [2023-12-20 12:48:28,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:48:28,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018817961] [2023-12-20 12:48:28,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:48:28,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:48:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:48:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:48:29,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:48:29,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018817961] [2023-12-20 12:48:29,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018817961] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:48:29,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443140771] [2023-12-20 12:48:29,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:48:29,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:48:29,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:48:29,189 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:48:29,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 12:48:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:48:29,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-20 12:48:29,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:48:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:48:30,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:48:36,125 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:48:36,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443140771] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:48:36,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:48:36,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 22] total 61 [2023-12-20 12:48:36,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174302148] [2023-12-20 12:48:36,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:48:36,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-20 12:48:36,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:48:36,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-20 12:48:36,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=3326, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 12:48:36,127 INFO L87 Difference]: Start difference. First operand 7469 states and 9854 transitions. Second operand has 61 states, 61 states have (on average 4.295081967213115) internal successors, (262), 61 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:51:17,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:51:17,563 INFO L93 Difference]: Finished difference Result 20569 states and 25700 transitions. [2023-12-20 12:51:17,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 477 states. [2023-12-20 12:51:17,564 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.295081967213115) internal successors, (262), 61 states have internal predecessors, (262), 0 states have call successors, (0), 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 95 [2023-12-20 12:51:17,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:51:17,580 INFO L225 Difference]: With dead ends: 20569 [2023-12-20 12:51:17,581 INFO L226 Difference]: Without dead ends: 18803 [2023-12-20 12:51:17,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118355 ImplicationChecksByTransitivity, 155.7s TimeCoverageRelationStatistics Valid=26514, Invalid=253856, Unknown=0, NotChecked=0, Total=280370 [2023-12-20 12:51:17,593 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 24843 mSDsluCounter, 42987 mSDsCounter, 0 mSdLazyCounter, 4432 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24843 SdHoareTripleChecker+Valid, 44564 SdHoareTripleChecker+Invalid, 4722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 4432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-20 12:51:17,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24843 Valid, 44564 Invalid, 4722 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [290 Valid, 4432 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-20 12:51:17,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18803 states. [2023-12-20 12:51:18,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18803 to 10442. [2023-12-20 12:51:18,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10442 states, 10440 states have (on average 1.286015325670498) internal successors, (13426), 10441 states have internal predecessors, (13426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:51:18,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10442 states to 10442 states and 13426 transitions. [2023-12-20 12:51:18,555 INFO L78 Accepts]: Start accepts. Automaton has 10442 states and 13426 transitions. Word has length 95 [2023-12-20 12:51:18,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:51:18,556 INFO L495 AbstractCegarLoop]: Abstraction has 10442 states and 13426 transitions. [2023-12-20 12:51:18,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.295081967213115) internal successors, (262), 61 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:51:18,556 INFO L276 IsEmpty]: Start isEmpty. Operand 10442 states and 13426 transitions. [2023-12-20 12:51:18,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 12:51:18,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:51:18,558 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:51:18,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 12:51:18,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 12:51:18,764 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:51:18,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:51:18,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2045724958, now seen corresponding path program 1 times [2023-12-20 12:51:18,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:51:18,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457304439] [2023-12-20 12:51:18,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:51:18,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:51:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:51:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:51:19,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:51:19,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457304439] [2023-12-20 12:51:19,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457304439] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:51:19,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779385299] [2023-12-20 12:51:19,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:51:19,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:51:19,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:51:19,943 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:51:19,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 12:51:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:51:20,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 12:51:20,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:51:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:51:21,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:51:23,491 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:51:23,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779385299] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:51:23,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:51:23,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18, 18] total 58 [2023-12-20 12:51:23,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425248758] [2023-12-20 12:51:23,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:51:23,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-20 12:51:23,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:51:23,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-20 12:51:23,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=3073, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 12:51:23,492 INFO L87 Difference]: Start difference. First operand 10442 states and 13426 transitions. Second operand has 58 states, 58 states have (on average 4.672413793103448) internal successors, (271), 58 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:52:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:52:39,647 INFO L93 Difference]: Finished difference Result 29688 states and 36439 transitions. [2023-12-20 12:52:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 427 states. [2023-12-20 12:52:39,647 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.672413793103448) internal successors, (271), 58 states have internal predecessors, (271), 0 states have call successors, (0), 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 95 [2023-12-20 12:52:39,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:52:39,669 INFO L225 Difference]: With dead ends: 29688 [2023-12-20 12:52:39,670 INFO L226 Difference]: Without dead ends: 25320 [2023-12-20 12:52:39,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 481 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98087 ImplicationChecksByTransitivity, 69.1s TimeCoverageRelationStatistics Valid=26855, Invalid=205951, Unknown=0, NotChecked=0, Total=232806 [2023-12-20 12:52:39,738 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 24082 mSDsluCounter, 39338 mSDsCounter, 0 mSdLazyCounter, 7832 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24082 SdHoareTripleChecker+Valid, 41054 SdHoareTripleChecker+Invalid, 8289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 7832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:52:39,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24082 Valid, 41054 Invalid, 8289 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [457 Valid, 7832 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-20 12:52:39,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25320 states. [2023-12-20 12:52:40,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25320 to 11286. [2023-12-20 12:52:40,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11286 states, 11284 states have (on average 1.2772066643034385) internal successors, (14412), 11285 states have internal predecessors, (14412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:52:40,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11286 states to 11286 states and 14412 transitions. [2023-12-20 12:52:40,871 INFO L78 Accepts]: Start accepts. Automaton has 11286 states and 14412 transitions. Word has length 95 [2023-12-20 12:52:40,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:52:40,871 INFO L495 AbstractCegarLoop]: Abstraction has 11286 states and 14412 transitions. [2023-12-20 12:52:40,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.672413793103448) internal successors, (271), 58 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:52:40,871 INFO L276 IsEmpty]: Start isEmpty. Operand 11286 states and 14412 transitions. [2023-12-20 12:52:40,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 12:52:40,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:52:40,872 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:52:40,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 12:52:41,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 12:52:41,078 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:52:41,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:52:41,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1075755614, now seen corresponding path program 1 times [2023-12-20 12:52:41,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:52:41,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554867624] [2023-12-20 12:52:41,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:52:41,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:52:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:52:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:52:41,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:52:41,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554867624] [2023-12-20 12:52:41,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554867624] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:52:41,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982615217] [2023-12-20 12:52:41,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:52:41,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:52:41,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:52:41,906 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:52:41,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 12:52:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:52:42,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-20 12:52:42,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:52:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:52:43,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:52:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:52:46,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982615217] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:52:46,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:52:46,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 64 [2023-12-20 12:52:46,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819856621] [2023-12-20 12:52:46,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:52:46,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-20 12:52:46,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:52:46,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-20 12:52:46,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=3636, Unknown=0, NotChecked=0, Total=4032 [2023-12-20 12:52:46,500 INFO L87 Difference]: Start difference. First operand 11286 states and 14412 transitions. Second operand has 64 states, 64 states have (on average 4.21875) internal successors, (270), 64 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:53:32,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:53:32,529 INFO L93 Difference]: Finished difference Result 20897 states and 25912 transitions. [2023-12-20 12:53:32,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2023-12-20 12:53:32,539 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.21875) internal successors, (270), 64 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-20 12:53:32,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:53:32,553 INFO L225 Difference]: With dead ends: 20897 [2023-12-20 12:53:32,553 INFO L226 Difference]: Without dead ends: 18073 [2023-12-20 12:53:32,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29564 ImplicationChecksByTransitivity, 41.7s TimeCoverageRelationStatistics Valid=11663, Invalid=70419, Unknown=0, NotChecked=0, Total=82082 [2023-12-20 12:53:32,560 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 17877 mSDsluCounter, 32854 mSDsCounter, 0 mSdLazyCounter, 3450 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17877 SdHoareTripleChecker+Valid, 34424 SdHoareTripleChecker+Invalid, 3679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 3450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:53:32,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17877 Valid, 34424 Invalid, 3679 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [229 Valid, 3450 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 12:53:32,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18073 states. [2023-12-20 12:53:34,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18073 to 14744. [2023-12-20 12:53:34,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14744 states, 14742 states have (on average 1.2619047619047619) internal successors, (18603), 14743 states have internal predecessors, (18603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:53:34,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14744 states to 14744 states and 18603 transitions. [2023-12-20 12:53:34,231 INFO L78 Accepts]: Start accepts. Automaton has 14744 states and 18603 transitions. Word has length 96 [2023-12-20 12:53:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:53:34,231 INFO L495 AbstractCegarLoop]: Abstraction has 14744 states and 18603 transitions. [2023-12-20 12:53:34,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.21875) internal successors, (270), 64 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:53:34,231 INFO L276 IsEmpty]: Start isEmpty. Operand 14744 states and 18603 transitions. [2023-12-20 12:53:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:53:34,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:53:34,233 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:53:34,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 12:53:34,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 12:53:34,438 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:53:34,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:53:34,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1300029024, now seen corresponding path program 1 times [2023-12-20 12:53:34,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:53:34,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252861547] [2023-12-20 12:53:34,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:53:34,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:53:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:53:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:53:35,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:53:35,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252861547] [2023-12-20 12:53:35,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252861547] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:53:35,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399784313] [2023-12-20 12:53:35,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:53:35,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:53:35,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:53:35,231 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:53:35,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 12:53:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:53:35,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:53:35,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:53:36,264 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:53:36,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:53:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:53:37,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399784313] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:53:37,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:53:37,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 15] total 45 [2023-12-20 12:53:37,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336794043] [2023-12-20 12:53:37,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:53:37,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-20 12:53:37,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:53:37,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-20 12:53:37,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1802, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 12:53:37,363 INFO L87 Difference]: Start difference. First operand 14744 states and 18603 transitions. Second operand has 45 states, 45 states have (on average 5.8) internal successors, (261), 45 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:53:54,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:53:54,669 INFO L93 Difference]: Finished difference Result 33616 states and 41441 transitions. [2023-12-20 12:53:54,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2023-12-20 12:53:54,669 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.8) internal successors, (261), 45 states have internal predecessors, (261), 0 states have call successors, (0), 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 97 [2023-12-20 12:53:54,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:53:54,687 INFO L225 Difference]: With dead ends: 33616 [2023-12-20 12:53:54,687 INFO L226 Difference]: Without dead ends: 23017 [2023-12-20 12:53:54,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15308 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=7178, Invalid=37132, Unknown=0, NotChecked=0, Total=44310 [2023-12-20 12:53:54,696 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 24411 mSDsluCounter, 23813 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24411 SdHoareTripleChecker+Valid, 25362 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:53:54,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24411 Valid, 25362 Invalid, 2218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [212 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 12:53:54,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23017 states. [2023-12-20 12:53:57,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23017 to 20147. [2023-12-20 12:53:57,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20147 states, 20145 states have (on average 1.2462645817820799) internal successors, (25106), 20146 states have internal predecessors, (25106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:53:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20147 states to 20147 states and 25106 transitions. [2023-12-20 12:53:57,231 INFO L78 Accepts]: Start accepts. Automaton has 20147 states and 25106 transitions. Word has length 97 [2023-12-20 12:53:57,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:53:57,232 INFO L495 AbstractCegarLoop]: Abstraction has 20147 states and 25106 transitions. [2023-12-20 12:53:57,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.8) internal successors, (261), 45 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:53:57,232 INFO L276 IsEmpty]: Start isEmpty. Operand 20147 states and 25106 transitions. [2023-12-20 12:53:57,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:53:57,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:53:57,233 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:53:57,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 12:53:57,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:53:57,439 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:53:57,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:53:57,439 INFO L85 PathProgramCache]: Analyzing trace with hash -927858116, now seen corresponding path program 1 times [2023-12-20 12:53:57,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:53:57,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888148779] [2023-12-20 12:53:57,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:53:57,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:53:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:53:57,845 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:53:57,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:53:57,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888148779] [2023-12-20 12:53:57,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888148779] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:53:57,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767372998] [2023-12-20 12:53:57,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:53:57,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:53:57,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:53:57,858 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:53:57,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 12:53:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:53:57,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:53:57,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:53:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:53:58,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:53:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:53:59,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767372998] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:53:59,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:53:59,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 40 [2023-12-20 12:53:59,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290081336] [2023-12-20 12:53:59,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:53:59,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-20 12:53:59,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:53:59,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-20 12:53:59,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 12:53:59,858 INFO L87 Difference]: Start difference. First operand 20147 states and 25106 transitions. Second operand has 40 states, 40 states have (on average 6.375) internal successors, (255), 40 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:54:09,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:54:09,809 INFO L93 Difference]: Finished difference Result 58135 states and 71262 transitions. [2023-12-20 12:54:09,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-20 12:54:09,810 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.375) internal successors, (255), 40 states have internal predecessors, (255), 0 states have call successors, (0), 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 97 [2023-12-20 12:54:09,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:54:09,852 INFO L225 Difference]: With dead ends: 58135 [2023-12-20 12:54:09,852 INFO L226 Difference]: Without dead ends: 42769 [2023-12-20 12:54:09,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4367 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2845, Invalid=11917, Unknown=0, NotChecked=0, Total=14762 [2023-12-20 12:54:09,864 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 28795 mSDsluCounter, 21104 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28795 SdHoareTripleChecker+Valid, 22647 SdHoareTripleChecker+Invalid, 2295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:54:09,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28795 Valid, 22647 Invalid, 2295 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 12:54:09,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42769 states. [2023-12-20 12:54:13,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42769 to 23039. [2023-12-20 12:54:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23039 states, 23037 states have (on average 1.2445630941528845) internal successors, (28671), 23038 states have internal predecessors, (28671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:54:13,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23039 states to 23039 states and 28671 transitions. [2023-12-20 12:54:13,462 INFO L78 Accepts]: Start accepts. Automaton has 23039 states and 28671 transitions. Word has length 97 [2023-12-20 12:54:13,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:54:13,462 INFO L495 AbstractCegarLoop]: Abstraction has 23039 states and 28671 transitions. [2023-12-20 12:54:13,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.375) internal successors, (255), 40 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:54:13,463 INFO L276 IsEmpty]: Start isEmpty. Operand 23039 states and 28671 transitions. [2023-12-20 12:54:13,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 12:54:13,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:54:13,464 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:54:13,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-20 12:54:13,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:54:13,670 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:54:13,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:54:13,670 INFO L85 PathProgramCache]: Analyzing trace with hash -357546266, now seen corresponding path program 1 times [2023-12-20 12:54:13,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:54:13,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736360239] [2023-12-20 12:54:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:54:13,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:54:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:54:14,686 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:54:14,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:54:14,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736360239] [2023-12-20 12:54:14,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736360239] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:54:14,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733246850] [2023-12-20 12:54:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:54:14,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:54:14,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:54:14,688 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:54:14,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 12:54:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:54:14,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-20 12:54:14,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:54:17,640 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:54:17,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:54:22,944 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:54:22,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733246850] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:54:22,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:54:22,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 27] total 74 [2023-12-20 12:54:22,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194136896] [2023-12-20 12:54:22,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:54:22,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-20 12:54:22,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:54:22,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-20 12:54:22,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=4832, Unknown=0, NotChecked=0, Total=5402 [2023-12-20 12:54:22,948 INFO L87 Difference]: Start difference. First operand 23039 states and 28671 transitions. Second operand has 74 states, 74 states have (on average 3.675675675675676) internal successors, (272), 74 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:57:49,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:57:49,824 INFO L93 Difference]: Finished difference Result 63536 states and 77755 transitions. [2023-12-20 12:57:49,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 544 states. [2023-12-20 12:57:49,825 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.675675675675676) internal successors, (272), 74 states have internal predecessors, (272), 0 states have call successors, (0), 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 98 [2023-12-20 12:57:49,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:57:49,886 INFO L225 Difference]: With dead ends: 63536 [2023-12-20 12:57:49,886 INFO L226 Difference]: Without dead ends: 51067 [2023-12-20 12:57:49,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 608 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165714 ImplicationChecksByTransitivity, 193.0s TimeCoverageRelationStatistics Valid=44983, Invalid=326507, Unknown=0, NotChecked=0, Total=371490 [2023-12-20 12:57:49,915 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 37274 mSDsluCounter, 35705 mSDsCounter, 0 mSdLazyCounter, 5960 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37274 SdHoareTripleChecker+Valid, 37335 SdHoareTripleChecker+Invalid, 6396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 5960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:57:49,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37274 Valid, 37335 Invalid, 6396 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [436 Valid, 5960 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-20 12:57:49,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51067 states. [2023-12-20 12:57:54,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51067 to 27708. [2023-12-20 12:57:54,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27708 states, 27706 states have (on average 1.2381072691835704) internal successors, (34303), 27707 states have internal predecessors, (34303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:57:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27708 states to 27708 states and 34303 transitions. [2023-12-20 12:57:54,509 INFO L78 Accepts]: Start accepts. Automaton has 27708 states and 34303 transitions. Word has length 98 [2023-12-20 12:57:54,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:57:54,509 INFO L495 AbstractCegarLoop]: Abstraction has 27708 states and 34303 transitions. [2023-12-20 12:57:54,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.675675675675676) internal successors, (272), 74 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:57:54,510 INFO L276 IsEmpty]: Start isEmpty. Operand 27708 states and 34303 transitions. [2023-12-20 12:57:54,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 12:57:54,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:57:54,511 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:57:54,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 12:57:54,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:57:54,725 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:57:54,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:57:54,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1826687318, now seen corresponding path program 1 times [2023-12-20 12:57:54,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:57:54,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892418054] [2023-12-20 12:57:54,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:57:54,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:57:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:57:56,045 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 38 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:57:56,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:57:56,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892418054] [2023-12-20 12:57:56,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892418054] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:57:56,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593882026] [2023-12-20 12:57:56,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:57:56,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:57:56,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:57:56,048 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:57:56,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 12:57:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:57:56,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-20 12:57:56,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:57:59,602 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 39 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:57:59,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:58:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 34 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:58:08,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593882026] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:58:08,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:58:08,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 31, 33] total 86 [2023-12-20 12:58:08,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982521674] [2023-12-20 12:58:08,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:58:08,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-20 12:58:08,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:58:08,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-20 12:58:08,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=687, Invalid=6623, Unknown=0, NotChecked=0, Total=7310 [2023-12-20 12:58:08,701 INFO L87 Difference]: Start difference. First operand 27708 states and 34303 transitions. Second operand has 86 states, 86 states have (on average 3.046511627906977) internal successors, (262), 86 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:00:05,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:00:05,744 INFO L93 Difference]: Finished difference Result 56480 states and 68550 transitions. [2023-12-20 13:00:05,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 407 states. [2023-12-20 13:00:05,745 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.046511627906977) internal successors, (262), 86 states have internal predecessors, (262), 0 states have call successors, (0), 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 98 [2023-12-20 13:00:05,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:00:05,793 INFO L225 Difference]: With dead ends: 56480 [2023-12-20 13:00:05,794 INFO L226 Difference]: Without dead ends: 47704 [2023-12-20 13:00:05,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 484 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97685 ImplicationChecksByTransitivity, 107.0s TimeCoverageRelationStatistics Valid=28172, Invalid=207538, Unknown=0, NotChecked=0, Total=235710 [2023-12-20 13:00:05,813 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 33414 mSDsluCounter, 40171 mSDsCounter, 0 mSdLazyCounter, 6564 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33414 SdHoareTripleChecker+Valid, 41785 SdHoareTripleChecker+Invalid, 6925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 6564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:00:05,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33414 Valid, 41785 Invalid, 6925 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [361 Valid, 6564 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-20 13:00:05,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47704 states. [2023-12-20 13:00:11,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47704 to 30420. [2023-12-20 13:00:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30420 states, 30418 states have (on average 1.235551318298376) internal successors, (37583), 30419 states have internal predecessors, (37583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:00:11,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30420 states to 30420 states and 37583 transitions. [2023-12-20 13:00:11,337 INFO L78 Accepts]: Start accepts. Automaton has 30420 states and 37583 transitions. Word has length 98 [2023-12-20 13:00:11,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:00:11,337 INFO L495 AbstractCegarLoop]: Abstraction has 30420 states and 37583 transitions. [2023-12-20 13:00:11,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.046511627906977) internal successors, (262), 86 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:00:11,337 INFO L276 IsEmpty]: Start isEmpty. Operand 30420 states and 37583 transitions. [2023-12-20 13:00:11,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 13:00:11,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:00:11,341 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 13:00:11,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 13:00:11,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:00:11,548 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:00:11,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:00:11,548 INFO L85 PathProgramCache]: Analyzing trace with hash -495167586, now seen corresponding path program 2 times [2023-12-20 13:00:11,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:00:11,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503679905] [2023-12-20 13:00:11,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:00:11,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:00:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:00:12,161 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 50 proven. 168 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:00:12,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:00:12,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503679905] [2023-12-20 13:00:12,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503679905] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:00:12,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929957852] [2023-12-20 13:00:12,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 13:00:12,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:00:12,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:00:12,162 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:00:12,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 13:00:12,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 13:00:12,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 13:00:12,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-20 13:00:12,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:00:14,483 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 86 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:00:14,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:00:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 40 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:00:18,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929957852] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:00:18,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:00:18,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 26, 22] total 67 [2023-12-20 13:00:18,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663303452] [2023-12-20 13:00:18,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:00:18,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-20 13:00:18,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:00:18,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-20 13:00:18,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=4001, Unknown=0, NotChecked=0, Total=4422 [2023-12-20 13:00:18,849 INFO L87 Difference]: Start difference. First operand 30420 states and 37583 transitions. Second operand has 67 states, 67 states have (on average 5.567164179104478) internal successors, (373), 67 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-20 13:00:49,892 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 13:00:49,893 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 13:00:49,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2023-12-20 13:00:49,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30208 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=10690, Invalid=77816, Unknown=0, NotChecked=0, Total=88506 [2023-12-20 13:00:49,906 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 9509 mSDsluCounter, 8482 mSDsCounter, 0 mSdLazyCounter, 4893 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9509 SdHoareTripleChecker+Valid, 8864 SdHoareTripleChecker+Invalid, 5291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 4893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:00:49,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9509 Valid, 8864 Invalid, 5291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 4893 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 13:00:49,907 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 13:00:49,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-20 13:00:50,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:00:50,108 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (30420states) and FLOYD_HOARE automaton (currently 235 states, 67 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-30-4-4-3-2-2-1 term,while SimplifyDDA2 was simplifying 31 xjuncts wrt. a ATOM-1 context. [2023-12-20 13:00:50,109 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 13:00:50,111 INFO L445 BasicCegarLoop]: Path program histogram: [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] [2023-12-20 13:00:50,113 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 13:00:50,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 01:00:50 BoogieIcfgContainer [2023-12-20 13:00:50,114 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 13:00:50,114 INFO L158 Benchmark]: Toolchain (without parser) took 842171.50ms. Allocated memory was 250.6MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 199.5MB in the beginning and 427.1MB in the end (delta: -227.6MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-20 13:00:50,115 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 208.7MB. Free memory was 155.0MB in the beginning and 154.9MB in the end (delta: 155.2kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 13:00:50,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1207.88ms. Allocated memory is still 250.6MB. Free memory was 199.1MB in the beginning and 171.4MB in the end (delta: 27.7MB). Peak memory consumption was 102.6MB. Max. memory is 8.0GB. [2023-12-20 13:00:50,115 INFO L158 Benchmark]: Boogie Procedure Inliner took 296.27ms. Allocated memory was 250.6MB in the beginning and 378.5MB in the end (delta: 127.9MB). Free memory was 171.4MB in the beginning and 276.6MB in the end (delta: -105.2MB). Peak memory consumption was 110.4MB. Max. memory is 8.0GB. [2023-12-20 13:00:50,115 INFO L158 Benchmark]: Boogie Preprocessor took 347.37ms. Allocated memory is still 378.5MB. Free memory was 276.6MB in the beginning and 241.0MB in the end (delta: 35.7MB). Peak memory consumption was 85.5MB. Max. memory is 8.0GB. [2023-12-20 13:00:50,115 INFO L158 Benchmark]: RCFGBuilder took 3131.54ms. Allocated memory was 378.5MB in the beginning and 757.1MB in the end (delta: 378.5MB). Free memory was 241.0MB in the beginning and 561.8MB in the end (delta: -320.8MB). Peak memory consumption was 235.9MB. Max. memory is 8.0GB. [2023-12-20 13:00:50,115 INFO L158 Benchmark]: TraceAbstraction took 837182.39ms. Allocated memory was 757.1MB in the beginning and 2.1GB in the end (delta: 1.3GB). Free memory was 561.3MB in the beginning and 427.1MB in the end (delta: 134.2MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-20 13:00:50,116 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 208.7MB. Free memory was 155.0MB in the beginning and 154.9MB in the end (delta: 155.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1207.88ms. Allocated memory is still 250.6MB. Free memory was 199.1MB in the beginning and 171.4MB in the end (delta: 27.7MB). Peak memory consumption was 102.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 296.27ms. Allocated memory was 250.6MB in the beginning and 378.5MB in the end (delta: 127.9MB). Free memory was 171.4MB in the beginning and 276.6MB in the end (delta: -105.2MB). Peak memory consumption was 110.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 347.37ms. Allocated memory is still 378.5MB. Free memory was 276.6MB in the beginning and 241.0MB in the end (delta: 35.7MB). Peak memory consumption was 85.5MB. Max. memory is 8.0GB. * RCFGBuilder took 3131.54ms. Allocated memory was 378.5MB in the beginning and 757.1MB in the end (delta: 378.5MB). Free memory was 241.0MB in the beginning and 561.8MB in the end (delta: -320.8MB). Peak memory consumption was 235.9MB. Max. memory is 8.0GB. * TraceAbstraction took 837182.39ms. Allocated memory was 757.1MB in the beginning and 2.1GB in the end (delta: 1.3GB). Free memory was 561.3MB in the beginning and 427.1MB in the end (delta: 134.2MB). Peak memory consumption was 1.4GB. 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: 294]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 294). Cancelled while NwaCegarLoop was constructing difference of abstraction (30420states) and FLOYD_HOARE automaton (currently 235 states, 67 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-30-4-4-3-2-2-1 term,while SimplifyDDA2 was simplifying 31 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 510]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 510). Cancelled while NwaCegarLoop was constructing difference of abstraction (30420states) and FLOYD_HOARE automaton (currently 235 states, 67 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-30-4-4-3-2-2-1 term,while SimplifyDDA2 was simplifying 31 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 807 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 837.1s, OverallIterations: 34, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 731.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 383930 SdHoareTripleChecker+Valid, 44.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 383930 mSDsluCounter, 464441 SdHoareTripleChecker+Invalid, 39.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 414114 mSDsCounter, 4402 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55423 IncrementalHoareTripleChecker+Invalid, 59825 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4402 mSolverCounterUnsat, 50327 mSDtfsCounter, 55423 mSolverCounterSat, 1.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6565 GetRequests, 2483 SyntacticMatches, 7 SemanticMatches, 4074 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603872 ImplicationChecksByTransitivity, 665.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30420occurred in iteration=33, InterpolantAutomatonStates: 3129, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 22.6s AutomataMinimizationTime, 33 MinimizatonAttempts, 104805 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 76.6s InterpolantComputationTime, 3623 NumberOfCodeBlocks, 3623 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 5040 ConstructedInterpolants, 0 QuantifiedInterpolants, 118643 SizeOfPredicates, 165 NumberOfNonLiveVariables, 6762 ConjunctsInSsa, 505 ConjunctsInUnsatCore, 70 InterpolantComputations, 16 PerfectInterpolantSequences, 1166/3513 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