/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-crafted/zero_sum5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 19:30:50,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 19:30:50,865 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 19:30:50,874 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 19:30:50,874 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 19:30:50,902 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 19:30:50,903 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 19:30:50,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 19:30:50,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 19:30:50,907 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 19:30:50,908 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 19:30:50,908 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 19:30:50,908 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 19:30:50,910 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 19:30:50,910 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 19:30:50,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 19:30:50,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 19:30:50,910 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 19:30:50,911 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 19:30:50,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 19:30:50,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 19:30:50,918 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 19:30:50,918 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 19:30:50,918 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 19:30:50,918 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 19:30:50,918 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 19:30:50,919 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 19:30:50,919 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 19:30:50,920 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 19:30:50,920 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 19:30:50,921 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 19:30:50,921 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 19:30:50,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 19:30:50,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 19:30:50,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 19:30:50,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 19:30:50,922 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 19:30:50,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 19:30:50,922 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 19:30:50,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 19:30:50,922 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 19:30:50,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 19:30:50,923 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 19:30:50,923 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 19:30:51,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 19:30:51,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 19:30:51,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 19:30:51,146 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 19:30:51,147 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 19:30:51,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum5.c [2023-12-18 19:30:52,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 19:30:52,458 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 19:30:52,459 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum5.c [2023-12-18 19:30:52,469 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/476646d78/ae828dde69f54f5aa3d24da303d01e4d/FLAG96f271ada [2023-12-18 19:30:52,485 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/476646d78/ae828dde69f54f5aa3d24da303d01e4d [2023-12-18 19:30:52,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 19:30:52,489 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 19:30:52,491 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 19:30:52,491 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 19:30:52,495 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 19:30:52,496 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:30:52" (1/1) ... [2023-12-18 19:30:52,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305c3abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:30:52, skipping insertion in model container [2023-12-18 19:30:52,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:30:52" (1/1) ... [2023-12-18 19:30:52,516 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 19:30:52,614 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum5.c[400,413] [2023-12-18 19:30:52,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 19:30:52,637 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 19:30:52,645 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum5.c[400,413] [2023-12-18 19:30:52,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 19:30:52,663 INFO L206 MainTranslator]: Completed translation [2023-12-18 19:30:52,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:30:52 WrapperNode [2023-12-18 19:30:52,663 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 19:30:52,664 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 19:30:52,664 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 19:30:52,664 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 19:30:52,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:30:52" (1/1) ... [2023-12-18 19:30:52,676 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:30:52" (1/1) ... [2023-12-18 19:30:52,694 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 152 [2023-12-18 19:30:52,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 19:30:52,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 19:30:52,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 19:30:52,695 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 19:30:52,704 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:30:52" (1/1) ... [2023-12-18 19:30:52,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:30:52" (1/1) ... [2023-12-18 19:30:52,706 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:30:52" (1/1) ... [2023-12-18 19:30:52,716 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-18 19:30:52,716 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:30:52" (1/1) ... [2023-12-18 19:30:52,716 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:30:52" (1/1) ... [2023-12-18 19:30:52,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:30:52" (1/1) ... [2023-12-18 19:30:52,726 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:30:52" (1/1) ... [2023-12-18 19:30:52,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:30:52" (1/1) ... [2023-12-18 19:30:52,730 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:30:52" (1/1) ... [2023-12-18 19:30:52,732 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 19:30:52,732 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 19:30:52,732 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 19:30:52,733 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 19:30:52,733 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:30:52" (1/1) ... [2023-12-18 19:30:52,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 19:30:52,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:30:52,783 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) [2023-12-18 19:30:52,812 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 [2023-12-18 19:30:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 19:30:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 19:30:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-18 19:30:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-18 19:30:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-18 19:30:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-18 19:30:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 19:30:52,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 19:30:52,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-18 19:30:52,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-18 19:30:52,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-18 19:30:52,911 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 19:30:52,913 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 19:30:53,070 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 19:30:53,104 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 19:30:53,105 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-18 19:30:53,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:30:53 BoogieIcfgContainer [2023-12-18 19:30:53,105 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 19:30:53,106 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 19:30:53,107 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 19:30:53,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 19:30:53,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:30:52" (1/3) ... [2023-12-18 19:30:53,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca9e0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:30:53, skipping insertion in model container [2023-12-18 19:30:53,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:30:52" (2/3) ... [2023-12-18 19:30:53,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca9e0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:30:53, skipping insertion in model container [2023-12-18 19:30:53,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:30:53" (3/3) ... [2023-12-18 19:30:53,111 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum5.c [2023-12-18 19:30:53,123 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 19:30:53,123 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-18 19:30:53,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 19:30:53,160 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;@195af98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 19:30:53,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-18 19:30:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 29 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) [2023-12-18 19:30:53,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-18 19:30:53,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:30:53,168 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] [2023-12-18 19:30:53,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:30:53,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:30:53,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1439288402, now seen corresponding path program 1 times [2023-12-18 19:30:53,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:30:53,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452192802] [2023-12-18 19:30:53,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:30:53,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:30:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:30:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:30:53,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:30:53,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452192802] [2023-12-18 19:30:53,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452192802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 19:30:53,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 19:30:53,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 19:30:53,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795213910] [2023-12-18 19:30:53,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 19:30:53,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 19:30:53,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:30:53,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 19:30:53,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 19:30:53,377 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 29 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) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:53,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:30:53,433 INFO L93 Difference]: Finished difference Result 57 states and 100 transitions. [2023-12-18 19:30:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 19:30:53,435 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-18 19:30:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:30:53,441 INFO L225 Difference]: With dead ends: 57 [2023-12-18 19:30:53,441 INFO L226 Difference]: Without dead ends: 27 [2023-12-18 19:30:53,443 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 [2023-12-18 19:30:53,448 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 19:30:53,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 19:30:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-18 19:30:53,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-12-18 19:30:53,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2023-12-18 19:30:53,475 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 26 [2023-12-18 19:30:53,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:30:53,475 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2023-12-18 19:30:53,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:53,475 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2023-12-18 19:30:53,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-18 19:30:53,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:30:53,476 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] [2023-12-18 19:30:53,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 19:30:53,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:30:53,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:30:53,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1795376710, now seen corresponding path program 1 times [2023-12-18 19:30:53,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:30:53,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103626369] [2023-12-18 19:30:53,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:30:53,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:30:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:30:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:30:53,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:30:53,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103626369] [2023-12-18 19:30:53,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103626369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 19:30:53,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 19:30:53,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 19:30:53,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198681583] [2023-12-18 19:30:53,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 19:30:53,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 19:30:53,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:30:53,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 19:30:53,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 19:30:53,630 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:53,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:30:53,682 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2023-12-18 19:30:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 19:30:53,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-18 19:30:53,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:30:53,684 INFO L225 Difference]: With dead ends: 52 [2023-12-18 19:30:53,684 INFO L226 Difference]: Without dead ends: 28 [2023-12-18 19:30:53,685 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 [2023-12-18 19:30:53,686 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 19:30:53,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 19:30:53,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-18 19:30:53,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-18 19:30:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2023-12-18 19:30:53,692 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 26 [2023-12-18 19:30:53,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:30:53,692 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2023-12-18 19:30:53,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:53,692 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2023-12-18 19:30:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-18 19:30:53,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:30:53,693 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] [2023-12-18 19:30:53,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 19:30:53,693 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:30:53,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:30:53,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1649880805, now seen corresponding path program 1 times [2023-12-18 19:30:53,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:30:53,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904438965] [2023-12-18 19:30:53,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:30:53,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:30:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:30:53,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-18 19:30:53,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:30:53,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904438965] [2023-12-18 19:30:53,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904438965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 19:30:53,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 19:30:53,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 19:30:53,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302248849] [2023-12-18 19:30:53,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 19:30:53,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 19:30:53,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:30:53,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 19:30:53,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 19:30:53,774 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:53,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:30:53,853 INFO L93 Difference]: Finished difference Result 60 states and 88 transitions. [2023-12-18 19:30:53,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 19:30:53,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-12-18 19:30:53,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:30:53,855 INFO L225 Difference]: With dead ends: 60 [2023-12-18 19:30:53,855 INFO L226 Difference]: Without dead ends: 38 [2023-12-18 19:30:53,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 19:30:53,861 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 33 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:30:53,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 17 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:30:53,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-18 19:30:53,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-18 19:30:53,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2023-12-18 19:30:53,870 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 27 [2023-12-18 19:30:53,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:30:53,871 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2023-12-18 19:30:53,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:53,871 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2023-12-18 19:30:53,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-18 19:30:53,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:30:53,872 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] [2023-12-18 19:30:53,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 19:30:53,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:30:53,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:30:53,872 INFO L85 PathProgramCache]: Analyzing trace with hash -903484266, now seen corresponding path program 1 times [2023-12-18 19:30:53,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:30:53,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327305402] [2023-12-18 19:30:53,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:30:53,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:30:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:30:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 19:30:53,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:30:53,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327305402] [2023-12-18 19:30:53,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327305402] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:30:53,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169975809] [2023-12-18 19:30:53,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:30:53,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:30:53,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:30:53,991 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) [2023-12-18 19:30:54,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 19:30:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:30:54,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-18 19:30:54,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:30:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 19:30:54,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:30:54,204 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 19:30:54,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169975809] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:30:54,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:30:54,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-12-18 19:30:54,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707373789] [2023-12-18 19:30:54,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:30:54,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 19:30:54,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:30:54,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 19:30:54,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-12-18 19:30:54,210 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:54,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:30:54,280 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2023-12-18 19:30:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 19:30:54,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-18 19:30:54,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:30:54,281 INFO L225 Difference]: With dead ends: 73 [2023-12-18 19:30:54,282 INFO L226 Difference]: Without dead ends: 39 [2023-12-18 19:30:54,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-12-18 19:30:54,287 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:30:54,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:30:54,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-18 19:30:54,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-18 19:30:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 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) [2023-12-18 19:30:54,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2023-12-18 19:30:54,297 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 37 [2023-12-18 19:30:54,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:30:54,297 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2023-12-18 19:30:54,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:54,297 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2023-12-18 19:30:54,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-18 19:30:54,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:30:54,298 INFO L195 NwaCegarLoop]: trace 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, 1, 1, 1, 1] [2023-12-18 19:30:54,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-18 19:30:54,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:30:54,503 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:30:54,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:30:54,505 INFO L85 PathProgramCache]: Analyzing trace with hash -702104937, now seen corresponding path program 2 times [2023-12-18 19:30:54,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:30:54,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379368305] [2023-12-18 19:30:54,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:30:54,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:30:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:30:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 19:30:54,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:30:54,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379368305] [2023-12-18 19:30:54,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379368305] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:30:54,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453499981] [2023-12-18 19:30:54,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:30:54,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:30:54,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:30:54,666 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) [2023-12-18 19:30:54,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 19:30:54,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 19:30:54,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:30:54,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-18 19:30:54,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:30:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 19:30:54,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:30:54,870 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 19:30:54,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453499981] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:30:54,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:30:54,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-12-18 19:30:54,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535709352] [2023-12-18 19:30:54,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:30:54,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-18 19:30:54,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:30:54,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-18 19:30:54,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-18 19:30:54,872 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:54,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:30:54,971 INFO L93 Difference]: Finished difference Result 80 states and 108 transitions. [2023-12-18 19:30:54,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 19:30:54,971 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 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 38 [2023-12-18 19:30:54,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:30:54,972 INFO L225 Difference]: With dead ends: 80 [2023-12-18 19:30:54,972 INFO L226 Difference]: Without dead ends: 49 [2023-12-18 19:30:54,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-18 19:30:54,973 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:30:54,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:30:54,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-18 19:30:54,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-18 19:30:54,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 48 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:54,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2023-12-18 19:30:54,982 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 38 [2023-12-18 19:30:54,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:30:54,982 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2023-12-18 19:30:54,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:54,982 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2023-12-18 19:30:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-18 19:30:54,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:30:54,987 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:30:54,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 19:30:55,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:30:55,192 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:30:55,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:30:55,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1904690106, now seen corresponding path program 3 times [2023-12-18 19:30:55,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:30:55,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044226621] [2023-12-18 19:30:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:30:55,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:30:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:30:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:30:57,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:30:57,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044226621] [2023-12-18 19:30:57,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044226621] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:30:57,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020658505] [2023-12-18 19:30:57,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 19:30:57,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:30:57,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:30:57,826 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) [2023-12-18 19:30:57,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 19:30:57,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-18 19:30:57,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:30:57,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-18 19:30:57,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:30:57,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:30:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:30:58,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:30:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-18 19:30:58,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020658505] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:30:58,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:30:58,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 9] total 18 [2023-12-18 19:30:58,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907374935] [2023-12-18 19:30:58,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:30:58,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-18 19:30:58,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:30:58,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-18 19:30:58,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-12-18 19:30:58,324 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:58,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:30:58,638 INFO L93 Difference]: Finished difference Result 90 states and 109 transitions. [2023-12-18 19:30:58,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-18 19:30:58,639 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 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 48 [2023-12-18 19:30:58,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:30:58,641 INFO L225 Difference]: With dead ends: 90 [2023-12-18 19:30:58,642 INFO L226 Difference]: Without dead ends: 86 [2023-12-18 19:30:58,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-18 19:30:58,643 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:30:58,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 183 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 19:30:58,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-18 19:30:58,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2023-12-18 19:30:58,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 83 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:58,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2023-12-18 19:30:58,666 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 48 [2023-12-18 19:30:58,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:30:58,667 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2023-12-18 19:30:58,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:58,667 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2023-12-18 19:30:58,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-18 19:30:58,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:30:58,671 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 19:30:58,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 19:30:58,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:30:58,876 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:30:58,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:30:58,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1358968049, now seen corresponding path program 4 times [2023-12-18 19:30:58,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:30:58,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238646530] [2023-12-18 19:30:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:30:58,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:30:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:30:58,954 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-18 19:30:58,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:30:58,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238646530] [2023-12-18 19:30:58,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238646530] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:30:58,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698485122] [2023-12-18 19:30:58,955 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 19:30:58,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:30:58,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:30:58,964 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) [2023-12-18 19:30:59,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 19:30:59,065 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 19:30:59,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:30:59,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-18 19:30:59,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:30:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-18 19:30:59,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:30:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-18 19:30:59,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698485122] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:30:59,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:30:59,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-12-18 19:30:59,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645756605] [2023-12-18 19:30:59,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:30:59,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-18 19:30:59,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:30:59,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-18 19:30:59,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-12-18 19:30:59,194 INFO L87 Difference]: Start difference. First operand 84 states and 103 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:59,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:30:59,740 INFO L93 Difference]: Finished difference Result 177 states and 224 transitions. [2023-12-18 19:30:59,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-18 19:30:59,740 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-18 19:30:59,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:30:59,741 INFO L225 Difference]: With dead ends: 177 [2023-12-18 19:30:59,741 INFO L226 Difference]: Without dead ends: 96 [2023-12-18 19:30:59,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 84 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2023-12-18 19:30:59,742 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 112 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 19:30:59,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 124 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 19:30:59,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-18 19:30:59,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2023-12-18 19:30:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 88 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:59,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2023-12-18 19:30:59,767 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 49 [2023-12-18 19:30:59,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:30:59,767 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2023-12-18 19:30:59,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:30:59,767 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2023-12-18 19:30:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-18 19:30:59,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:30:59,768 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-18 19:30:59,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-18 19:30:59,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:30:59,972 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:30:59,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:30:59,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1405545912, now seen corresponding path program 5 times [2023-12-18 19:30:59,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:30:59,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130671576] [2023-12-18 19:30:59,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:30:59,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:30:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:31:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-18 19:31:00,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:31:00,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130671576] [2023-12-18 19:31:00,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130671576] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:31:00,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927378686] [2023-12-18 19:31:00,086 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 19:31:00,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:31:00,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:31:00,109 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) [2023-12-18 19:31:00,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 19:31:00,256 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-18 19:31:00,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:31:00,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-18 19:31:00,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:31:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-18 19:31:00,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:31:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-18 19:31:00,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927378686] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:31:00,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:31:00,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-12-18 19:31:00,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652795409] [2023-12-18 19:31:00,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:31:00,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-18 19:31:00,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:31:00,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-18 19:31:00,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-12-18 19:31:00,348 INFO L87 Difference]: Start difference. First operand 89 states and 107 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:31:00,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:31:00,444 INFO L93 Difference]: Finished difference Result 134 states and 160 transitions. [2023-12-18 19:31:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 19:31:00,445 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2023-12-18 19:31:00,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:31:00,445 INFO L225 Difference]: With dead ends: 134 [2023-12-18 19:31:00,445 INFO L226 Difference]: Without dead ends: 60 [2023-12-18 19:31:00,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 89 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-12-18 19:31:00,446 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 43 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:31:00,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 59 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:31:00,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-18 19:31:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-12-18 19:31:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:31:00,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2023-12-18 19:31:00,450 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 50 [2023-12-18 19:31:00,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:31:00,450 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2023-12-18 19:31:00,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:31:00,450 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2023-12-18 19:31:00,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-18 19:31:00,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:31:00,451 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:31:00,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-18 19:31:00,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:31:00,652 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:31:00,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:31:00,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1880623638, now seen corresponding path program 6 times [2023-12-18 19:31:00,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:31:00,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580477608] [2023-12-18 19:31:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:31:00,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:31:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:31:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:31:03,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:31:03,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580477608] [2023-12-18 19:31:03,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580477608] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:31:03,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587083769] [2023-12-18 19:31:03,639 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 19:31:03,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:31:03,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:31:03,640 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) [2023-12-18 19:31:03,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 19:31:03,712 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-18 19:31:03,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:31:03,715 WARN L260 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 130 conjunts are in the unsatisfiable core [2023-12-18 19:31:03,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:31:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 19:31:04,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:31:04,387 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:31:04,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 52 treesize of output 89 [2023-12-18 19:31:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 19:31:04,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587083769] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:31:04,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:31:04,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 12, 12] total 49 [2023-12-18 19:31:04,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320758626] [2023-12-18 19:31:04,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:31:04,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-18 19:31:04,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:31:04,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-18 19:31:04,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2165, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 19:31:04,516 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:31:07,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:31:07,250 INFO L93 Difference]: Finished difference Result 159 states and 198 transitions. [2023-12-18 19:31:07,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-18 19:31:07,251 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 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 [2023-12-18 19:31:07,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:31:07,252 INFO L225 Difference]: With dead ends: 159 [2023-12-18 19:31:07,252 INFO L226 Difference]: Without dead ends: 155 [2023-12-18 19:31:07,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=598, Invalid=5882, Unknown=0, NotChecked=0, Total=6480 [2023-12-18 19:31:07,254 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 240 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 3117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:31:07,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 213 Invalid, 3117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-18 19:31:07,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-18 19:31:07,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 63. [2023-12-18 19:31:07,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 62 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:31:07,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2023-12-18 19:31:07,268 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 59 [2023-12-18 19:31:07,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:31:07,269 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2023-12-18 19:31:07,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:31:07,269 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2023-12-18 19:31:07,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-18 19:31:07,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:31:07,269 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:31:07,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-18 19:31:07,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:31:07,487 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:31:07,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:31:07,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1799050761, now seen corresponding path program 7 times [2023-12-18 19:31:07,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:31:07,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567931191] [2023-12-18 19:31:07,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:31:07,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:31:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:31:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-18 19:31:07,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:31:07,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567931191] [2023-12-18 19:31:07,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567931191] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:31:07,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421582660] [2023-12-18 19:31:07,634 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 19:31:07,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:31:07,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:31:07,649 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) [2023-12-18 19:31:07,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 19:31:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:31:07,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-18 19:31:07,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:31:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-18 19:31:07,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:31:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-18 19:31:07,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421582660] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:31:07,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:31:07,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-12-18 19:31:07,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280979678] [2023-12-18 19:31:07,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:31:07,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-18 19:31:07,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:31:07,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-18 19:31:07,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-12-18 19:31:07,918 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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) [2023-12-18 19:31:08,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:31:08,102 INFO L93 Difference]: Finished difference Result 167 states and 198 transitions. [2023-12-18 19:31:08,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-18 19:31:08,102 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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 60 [2023-12-18 19:31:08,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:31:08,103 INFO L225 Difference]: With dead ends: 167 [2023-12-18 19:31:08,103 INFO L226 Difference]: Without dead ends: 64 [2023-12-18 19:31:08,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 107 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-12-18 19:31:08,105 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 46 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 19:31:08,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 57 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 19:31:08,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-18 19:31:08,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-18 19:31:08,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 63 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:31:08,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2023-12-18 19:31:08,117 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 60 [2023-12-18 19:31:08,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:31:08,117 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2023-12-18 19:31:08,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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) [2023-12-18 19:31:08,117 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2023-12-18 19:31:08,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 19:31:08,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:31:08,118 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:31:08,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 19:31:08,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:31:08,339 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:31:08,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:31:08,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1170057942, now seen corresponding path program 8 times [2023-12-18 19:31:08,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:31:08,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660467686] [2023-12-18 19:31:08,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:31:08,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:31:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:31:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-18 19:31:08,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:31:08,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660467686] [2023-12-18 19:31:08,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660467686] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:31:08,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344373639] [2023-12-18 19:31:08,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:31:08,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:31:08,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:31:08,450 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) [2023-12-18 19:31:08,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 19:31:08,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 19:31:08,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:31:08,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-18 19:31:08,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:31:08,583 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-18 19:31:08,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:31:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-18 19:31:08,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344373639] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:31:08,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:31:08,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-12-18 19:31:08,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058427267] [2023-12-18 19:31:08,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:31:08,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-18 19:31:08,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:31:08,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-18 19:31:08,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 19:31:08,643 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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) [2023-12-18 19:31:08,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:31:08,813 INFO L93 Difference]: Finished difference Result 123 states and 152 transitions. [2023-12-18 19:31:08,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-18 19:31:08,814 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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 61 [2023-12-18 19:31:08,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:31:08,814 INFO L225 Difference]: With dead ends: 123 [2023-12-18 19:31:08,815 INFO L226 Difference]: Without dead ends: 71 [2023-12-18 19:31:08,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 108 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-18 19:31:08,815 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 62 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:31:08,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 74 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:31:08,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-18 19:31:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-12-18 19:31:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 70 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:31:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2023-12-18 19:31:08,828 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 61 [2023-12-18 19:31:08,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:31:08,828 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2023-12-18 19:31:08,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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) [2023-12-18 19:31:08,828 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2023-12-18 19:31:08,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-18 19:31:08,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:31:08,829 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:31:08,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 19:31:09,034 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,SelfDestructingSolverStorable10 [2023-12-18 19:31:09,034 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:31:09,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:31:09,034 INFO L85 PathProgramCache]: Analyzing trace with hash 466932294, now seen corresponding path program 9 times [2023-12-18 19:31:09,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:31:09,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148486042] [2023-12-18 19:31:09,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:31:09,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:31:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:31:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 2 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:31:13,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:31:13,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148486042] [2023-12-18 19:31:13,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148486042] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:31:13,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219461463] [2023-12-18 19:31:13,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 19:31:13,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:31:13,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:31:13,117 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) [2023-12-18 19:31:13,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 19:31:13,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-18 19:31:13,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:31:13,214 WARN L260 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-18 19:31:13,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:31:14,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:31:14,994 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:31:14,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 41 [2023-12-18 19:31:15,123 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 2 proven. 107 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-18 19:31:15,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:32:31,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:32:31,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 52 treesize of output 89 [2023-12-18 19:32:31,899 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 19:32:31,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219461463] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:32:31,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:32:31,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 36, 39] total 109 [2023-12-18 19:32:31,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949589719] [2023-12-18 19:32:31,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:32:31,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2023-12-18 19:32:31,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:32:31,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2023-12-18 19:32:31,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=765, Invalid=10988, Unknown=19, NotChecked=0, Total=11772 [2023-12-18 19:32:31,903 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 109 states, 109 states have (on average 1.834862385321101) internal successors, (200), 109 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:32:45,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:32:45,531 INFO L93 Difference]: Finished difference Result 324 states and 385 transitions. [2023-12-18 19:32:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-18 19:32:45,532 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 1.834862385321101) internal successors, (200), 109 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-18 19:32:45,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:32:45,533 INFO L225 Difference]: With dead ends: 324 [2023-12-18 19:32:45,533 INFO L226 Difference]: Without dead ends: 133 [2023-12-18 19:32:45,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 88 SyntacticMatches, 4 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6654 ImplicationChecksByTransitivity, 84.6s TimeCoverageRelationStatistics Valid=3136, Invalid=23577, Unknown=19, NotChecked=0, Total=26732 [2023-12-18 19:32:45,538 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 923 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 8173 mSolverCounterSat, 2406 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 10583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2406 IncrementalHoareTripleChecker+Valid, 8173 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-18 19:32:45,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 550 Invalid, 10583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2406 Valid, 8173 Invalid, 4 Unknown, 0 Unchecked, 7.2s Time] [2023-12-18 19:32:45,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-12-18 19:32:45,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 86. [2023-12-18 19:32:45,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1764705882352942) internal successors, (100), 85 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:32:45,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 100 transitions. [2023-12-18 19:32:45,561 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 100 transitions. Word has length 70 [2023-12-18 19:32:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:32:45,561 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 100 transitions. [2023-12-18 19:32:45,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 1.834862385321101) internal successors, (200), 109 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:32:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 100 transitions. [2023-12-18 19:32:45,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-18 19:32:45,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:32:45,561 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:32:45,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-18 19:32:45,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:32:45,763 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:32:45,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:32:45,764 INFO L85 PathProgramCache]: Analyzing trace with hash 56649590, now seen corresponding path program 10 times [2023-12-18 19:32:45,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:32:45,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642855368] [2023-12-18 19:32:45,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:32:45,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:32:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:32:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-18 19:32:45,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:32:45,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642855368] [2023-12-18 19:32:45,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642855368] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:32:45,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531289230] [2023-12-18 19:32:45,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 19:32:45,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:32:45,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:32:45,926 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) [2023-12-18 19:32:45,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 19:32:46,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 19:32:46,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:32:46,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-18 19:32:46,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:32:46,130 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-18 19:32:46,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:32:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-18 19:32:46,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531289230] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:32:46,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:32:46,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2023-12-18 19:32:46,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155912627] [2023-12-18 19:32:46,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:32:46,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-18 19:32:46,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:32:46,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-18 19:32:46,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-12-18 19:32:46,223 INFO L87 Difference]: Start difference. First operand 86 states and 100 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:32:46,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:32:46,574 INFO L93 Difference]: Finished difference Result 145 states and 173 transitions. [2023-12-18 19:32:46,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 19:32:46,574 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-18 19:32:46,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:32:46,574 INFO L225 Difference]: With dead ends: 145 [2023-12-18 19:32:46,574 INFO L226 Difference]: Without dead ends: 82 [2023-12-18 19:32:46,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 133 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=695, Unknown=0, NotChecked=0, Total=870 [2023-12-18 19:32:46,575 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 101 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:32:46,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 62 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 19:32:46,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-18 19:32:46,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-12-18 19:32:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 81 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:32:46,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2023-12-18 19:32:46,595 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 77 [2023-12-18 19:32:46,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:32:46,595 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2023-12-18 19:32:46,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 24 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:32:46,595 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2023-12-18 19:32:46,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-18 19:32:46,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:32:46,595 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:32:46,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 19:32:46,800 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,SelfDestructingSolverStorable12 [2023-12-18 19:32:46,801 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:32:46,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:32:46,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1937881194, now seen corresponding path program 11 times [2023-12-18 19:32:46,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:32:46,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848824874] [2023-12-18 19:32:46,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:32:46,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:32:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:32:52,970 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 7 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:32:52,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:32:52,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848824874] [2023-12-18 19:32:52,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848824874] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:32:52,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731200505] [2023-12-18 19:32:52,971 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 19:32:52,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:32:52,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:32:52,972 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) [2023-12-18 19:32:52,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 19:32:53,145 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-18 19:32:53,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:32:53,149 WARN L260 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 222 conjunts are in the unsatisfiable core [2023-12-18 19:32:53,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:32:53,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:32:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:32:53,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:32:54,529 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-18 19:32:54,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731200505] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:32:54,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:32:54,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 21, 15] total 74 [2023-12-18 19:32:54,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682495269] [2023-12-18 19:32:54,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:32:54,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-18 19:32:54,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:32:54,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-18 19:32:54,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=5076, Unknown=0, NotChecked=0, Total=5402 [2023-12-18 19:32:54,534 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 74 states, 74 states have (on average 2.891891891891892) internal successors, (214), 74 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:32:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:32:59,114 INFO L93 Difference]: Finished difference Result 331 states and 387 transitions. [2023-12-18 19:32:59,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-18 19:32:59,114 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.891891891891892) internal successors, (214), 74 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-12-18 19:32:59,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:32:59,115 INFO L225 Difference]: With dead ends: 331 [2023-12-18 19:32:59,115 INFO L226 Difference]: Without dead ends: 225 [2023-12-18 19:32:59,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3629 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1022, Invalid=12088, Unknown=0, NotChecked=0, Total=13110 [2023-12-18 19:32:59,117 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 199 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 4498 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 5253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 4498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-18 19:32:59,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 439 Invalid, 5253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 4498 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-18 19:32:59,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-18 19:32:59,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 135. [2023-12-18 19:32:59,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.1417910447761195) internal successors, (153), 134 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:32:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 153 transitions. [2023-12-18 19:32:59,162 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 153 transitions. Word has length 81 [2023-12-18 19:32:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:32:59,162 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 153 transitions. [2023-12-18 19:32:59,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.891891891891892) internal successors, (214), 74 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:32:59,163 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 153 transitions. [2023-12-18 19:32:59,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-18 19:32:59,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:32:59,163 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:32:59,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-18 19:32:59,369 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,SelfDestructingSolverStorable13 [2023-12-18 19:32:59,369 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:32:59,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:32:59,369 INFO L85 PathProgramCache]: Analyzing trace with hash -459714087, now seen corresponding path program 12 times [2023-12-18 19:32:59,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:32:59,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941936510] [2023-12-18 19:32:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:32:59,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:32:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:32:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-12-18 19:32:59,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:32:59,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941936510] [2023-12-18 19:32:59,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941936510] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:32:59,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751927616] [2023-12-18 19:32:59,548 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 19:32:59,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:32:59,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:32:59,553 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) [2023-12-18 19:32:59,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-18 19:32:59,662 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-18 19:32:59,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:32:59,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-18 19:32:59,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:32:59,773 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-12-18 19:32:59,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:32:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-12-18 19:32:59,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751927616] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:32:59,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:32:59,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2023-12-18 19:32:59,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608904506] [2023-12-18 19:32:59,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:32:59,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-18 19:32:59,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:32:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-18 19:32:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2023-12-18 19:32:59,862 INFO L87 Difference]: Start difference. First operand 135 states and 153 transitions. Second operand has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:33:00,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:33:00,082 INFO L93 Difference]: Finished difference Result 212 states and 248 transitions. [2023-12-18 19:33:00,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-18 19:33:00,083 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 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 83 [2023-12-18 19:33:00,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:33:00,083 INFO L225 Difference]: With dead ends: 212 [2023-12-18 19:33:00,083 INFO L226 Difference]: Without dead ends: 93 [2023-12-18 19:33:00,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 146 SyntacticMatches, 12 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2023-12-18 19:33:00,084 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 26 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 19:33:00,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 68 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 19:33:00,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-18 19:33:00,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-12-18 19:33:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.1195652173913044) internal successors, (103), 92 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:33:00,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2023-12-18 19:33:00,109 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 83 [2023-12-18 19:33:00,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:33:00,110 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2023-12-18 19:33:00,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:33:00,110 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2023-12-18 19:33:00,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-18 19:33:00,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:33:00,110 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:33:00,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-18 19:33:00,315 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,SelfDestructingSolverStorable14 [2023-12-18 19:33:00,315 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:33:00,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:33:00,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1908701114, now seen corresponding path program 13 times [2023-12-18 19:33:00,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:33:00,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734524870] [2023-12-18 19:33:00,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:33:00,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:33:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:33:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 10 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:33:09,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:33:09,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734524870] [2023-12-18 19:33:09,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734524870] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:33:09,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168947924] [2023-12-18 19:33:09,572 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 19:33:09,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:33:09,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:33:09,573 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) [2023-12-18 19:33:09,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-18 19:33:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:33:09,687 WARN L260 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 264 conjunts are in the unsatisfiable core [2023-12-18 19:33:09,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:33:09,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:33:10,531 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:33:10,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:33:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-18 19:33:11,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168947924] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:33:11,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:33:11,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 24, 17] total 86 [2023-12-18 19:33:11,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227805158] [2023-12-18 19:33:11,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:33:11,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-18 19:33:11,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:33:11,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-18 19:33:11,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=6998, Unknown=0, NotChecked=0, Total=7310 [2023-12-18 19:33:11,580 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand has 86 states, 86 states have (on average 2.86046511627907) internal successors, (246), 86 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:33:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:33:17,763 INFO L93 Difference]: Finished difference Result 397 states and 453 transitions. [2023-12-18 19:33:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-18 19:33:17,764 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.86046511627907) internal successors, (246), 86 states have internal predecessors, (246), 0 states have call successors, (0), 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 92 [2023-12-18 19:33:17,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:33:17,764 INFO L225 Difference]: With dead ends: 397 [2023-12-18 19:33:17,765 INFO L226 Difference]: Without dead ends: 281 [2023-12-18 19:33:17,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4463 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1402, Invalid=18058, Unknown=0, NotChecked=0, Total=19460 [2023-12-18 19:33:17,766 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 317 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 5778 mSolverCounterSat, 1349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 7127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1349 IncrementalHoareTripleChecker+Valid, 5778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-18 19:33:17,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 404 Invalid, 7127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1349 Valid, 5778 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-18 19:33:17,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-18 19:33:17,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 204. [2023-12-18 19:33:17,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.1379310344827587) internal successors, (231), 203 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:33:17,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 231 transitions. [2023-12-18 19:33:17,830 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 231 transitions. Word has length 92 [2023-12-18 19:33:17,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:33:17,831 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 231 transitions. [2023-12-18 19:33:17,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.86046511627907) internal successors, (246), 86 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:33:17,831 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 231 transitions. [2023-12-18 19:33:17,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-18 19:33:17,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:33:17,831 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:33:17,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-18 19:33:18,036 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,SelfDestructingSolverStorable15 [2023-12-18 19:33:18,037 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:33:18,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:33:18,037 INFO L85 PathProgramCache]: Analyzing trace with hash -223703231, now seen corresponding path program 14 times [2023-12-18 19:33:18,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:33:18,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158844362] [2023-12-18 19:33:18,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:33:18,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:33:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:33:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-18 19:33:18,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:33:18,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158844362] [2023-12-18 19:33:18,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158844362] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:33:18,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713621709] [2023-12-18 19:33:18,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:33:18,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:33:18,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:33:18,235 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) [2023-12-18 19:33:18,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-18 19:33:18,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 19:33:18,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:33:18,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-18 19:33:18,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:33:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-18 19:33:18,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:33:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-18 19:33:18,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713621709] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:33:18,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:33:18,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2023-12-18 19:33:18,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750016402] [2023-12-18 19:33:18,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:33:18,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-18 19:33:18,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:33:18,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-18 19:33:18,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2023-12-18 19:33:18,531 INFO L87 Difference]: Start difference. First operand 204 states and 231 transitions. Second operand has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:33:18,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:33:18,807 INFO L93 Difference]: Finished difference Result 281 states and 324 transitions. [2023-12-18 19:33:18,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-18 19:33:18,818 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-18 19:33:18,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:33:18,819 INFO L225 Difference]: With dead ends: 281 [2023-12-18 19:33:18,819 INFO L226 Difference]: Without dead ends: 104 [2023-12-18 19:33:18,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 165 SyntacticMatches, 14 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2023-12-18 19:33:18,819 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 98 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 19:33:18,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 101 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 19:33:18,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-18 19:33:18,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-12-18 19:33:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.1067961165048543) internal successors, (114), 103 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:33:18,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2023-12-18 19:33:18,854 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 94 [2023-12-18 19:33:18,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:33:18,854 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2023-12-18 19:33:18,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:33:18,854 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2023-12-18 19:33:18,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-18 19:33:18,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:33:18,855 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:33:18,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-18 19:33:19,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:33:19,060 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:33:19,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:33:19,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1251255574, now seen corresponding path program 15 times [2023-12-18 19:33:19,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:33:19,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607974446] [2023-12-18 19:33:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:33:19,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:33:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:33:30,958 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 40 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:33:30,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:33:30,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607974446] [2023-12-18 19:33:30,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607974446] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:33:30,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142480378] [2023-12-18 19:33:30,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 19:33:30,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:33:30,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:33:30,960 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) [2023-12-18 19:33:30,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-18 19:33:31,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-18 19:33:31,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:33:31,161 WARN L260 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 311 conjunts are in the unsatisfiable core [2023-12-18 19:33:31,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:33:31,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 19:33:34,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:33:34,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:33:34,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:33:34,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:33:34,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 44 treesize of output 59 [2023-12-18 19:33:35,114 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 7 proven. 280 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-18 19:33:35,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:33:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 298 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 19:33:40,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142480378] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:33:40,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:33:40,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 46, 47] total 147 [2023-12-18 19:33:40,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353478159] [2023-12-18 19:33:40,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:33:40,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2023-12-18 19:33:40,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:33:40,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2023-12-18 19:33:40,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1334, Invalid=20128, Unknown=0, NotChecked=0, Total=21462 [2023-12-18 19:33:40,773 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand has 147 states, 147 states have (on average 2.006802721088435) internal successors, (295), 147 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:33:54,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 19:33:58,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:33:58,085 INFO L93 Difference]: Finished difference Result 446 states and 503 transitions. [2023-12-18 19:33:58,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2023-12-18 19:33:58,086 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 2.006802721088435) internal successors, (295), 147 states have internal predecessors, (295), 0 states have call successors, (0), 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 103 [2023-12-18 19:33:58,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:33:58,093 INFO L225 Difference]: With dead ends: 446 [2023-12-18 19:33:58,093 INFO L226 Difference]: Without dead ends: 320 [2023-12-18 19:33:58,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 145 SyntacticMatches, 8 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14254 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=3577, Invalid=47273, Unknown=0, NotChecked=0, Total=50850 [2023-12-18 19:33:58,111 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 371 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 8949 mSolverCounterSat, 1676 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 10626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1676 IncrementalHoareTripleChecker+Valid, 8949 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-18 19:33:58,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 527 Invalid, 10626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1676 Valid, 8949 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2023-12-18 19:33:58,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-12-18 19:33:58,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 248. [2023-12-18 19:33:58,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.1133603238866396) internal successors, (275), 247 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:33:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 275 transitions. [2023-12-18 19:33:58,225 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 275 transitions. Word has length 103 [2023-12-18 19:33:58,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:33:58,226 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 275 transitions. [2023-12-18 19:33:58,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 2.006802721088435) internal successors, (295), 147 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:33:58,226 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 275 transitions. [2023-12-18 19:33:58,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-18 19:33:58,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:33:58,227 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:33:58,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-18 19:33:58,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-18 19:33:58,433 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:33:58,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:33:58,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1143972903, now seen corresponding path program 16 times [2023-12-18 19:33:58,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:33:58,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817697701] [2023-12-18 19:33:58,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:33:58,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:33:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:33:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-12-18 19:33:58,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:33:58,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817697701] [2023-12-18 19:33:58,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817697701] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:33:58,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965491532] [2023-12-18 19:33:58,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 19:33:58,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:33:58,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:33:58,709 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) [2023-12-18 19:33:58,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-18 19:33:58,838 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 19:33:58,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:33:58,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-18 19:33:58,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:33:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-12-18 19:33:59,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:33:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-12-18 19:33:59,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965491532] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:33:59,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:33:59,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 36 [2023-12-18 19:33:59,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871004640] [2023-12-18 19:33:59,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:33:59,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-18 19:33:59,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:33:59,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-18 19:33:59,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1024, Unknown=0, NotChecked=0, Total=1260 [2023-12-18 19:33:59,269 INFO L87 Difference]: Start difference. First operand 248 states and 275 transitions. Second operand has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:33:59,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:33:59,869 INFO L93 Difference]: Finished difference Result 333 states and 376 transitions. [2023-12-18 19:33:59,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-18 19:33:59,869 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 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 106 [2023-12-18 19:33:59,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:33:59,870 INFO L225 Difference]: With dead ends: 333 [2023-12-18 19:33:59,870 INFO L226 Difference]: Without dead ends: 135 [2023-12-18 19:33:59,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 179 SyntacticMatches, 16 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=370, Invalid=1610, Unknown=0, NotChecked=0, Total=1980 [2023-12-18 19:33:59,872 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 110 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 19:33:59,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 77 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 19:33:59,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-18 19:33:59,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 115. [2023-12-18 19:33:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0964912280701755) internal successors, (125), 114 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:33:59,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2023-12-18 19:33:59,952 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 106 [2023-12-18 19:33:59,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:33:59,952 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2023-12-18 19:33:59,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:33:59,953 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2023-12-18 19:33:59,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-18 19:33:59,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:33:59,953 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:33:59,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-18 19:34:00,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:34:00,158 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:34:00,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:34:00,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1758518854, now seen corresponding path program 17 times [2023-12-18 19:34:00,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:34:00,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734770937] [2023-12-18 19:34:00,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:34:00,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:34:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:34:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 34 proven. 362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:34:16,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:34:16,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734770937] [2023-12-18 19:34:16,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734770937] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:34:16,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907064924] [2023-12-18 19:34:16,214 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 19:34:16,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:34:16,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:34:16,215 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) [2023-12-18 19:34:16,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-18 19:34:16,544 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-18 19:34:16,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:34:16,551 WARN L260 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 356 conjunts are in the unsatisfiable core [2023-12-18 19:34:16,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:34:16,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:34:16,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:34:16,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:34:16,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:34:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:34:22,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:34:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-18 19:34:29,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907064924] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:34:29,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:34:29,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 57, 56] total 164 [2023-12-18 19:34:29,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231185890] [2023-12-18 19:34:29,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:34:29,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2023-12-18 19:34:29,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:34:29,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2023-12-18 19:34:29,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=25579, Unknown=0, NotChecked=0, Total=26732 [2023-12-18 19:34:29,464 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand has 164 states, 164 states have (on average 1.920731707317073) internal successors, (315), 164 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:34:50,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:34:50,732 INFO L93 Difference]: Finished difference Result 286 states and 323 transitions. [2023-12-18 19:34:50,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-12-18 19:34:50,732 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 164 states have (on average 1.920731707317073) internal successors, (315), 164 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-18 19:34:50,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:34:50,735 INFO L225 Difference]: With dead ends: 286 [2023-12-18 19:34:50,735 INFO L226 Difference]: Without dead ends: 152 [2023-12-18 19:34:50,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16660 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=3616, Invalid=51844, Unknown=0, NotChecked=0, Total=55460 [2023-12-18 19:34:50,737 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 352 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 11887 mSolverCounterSat, 1471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 13358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1471 IncrementalHoareTripleChecker+Valid, 11887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:34:50,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 322 Invalid, 13358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1471 Valid, 11887 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-12-18 19:34:50,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-18 19:34:50,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 140. [2023-12-18 19:34:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.1007194244604317) internal successors, (153), 139 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:34:50,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 153 transitions. [2023-12-18 19:34:50,818 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 153 transitions. Word has length 114 [2023-12-18 19:34:50,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:34:50,820 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 153 transitions. [2023-12-18 19:34:50,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 1.920731707317073) internal successors, (315), 164 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:34:50,820 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 153 transitions. [2023-12-18 19:34:50,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-18 19:34:50,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:34:50,821 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:34:50,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-18 19:34:51,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:34:51,028 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:34:51,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:34:51,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1097685642, now seen corresponding path program 18 times [2023-12-18 19:34:51,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:34:51,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050344872] [2023-12-18 19:34:51,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:34:51,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:34:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:34:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 28 proven. 53 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-18 19:34:51,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:34:51,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050344872] [2023-12-18 19:34:51,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050344872] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:34:51,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451532108] [2023-12-18 19:34:51,449 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 19:34:51,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:34:51,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:34:51,450 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) [2023-12-18 19:34:51,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-18 19:34:51,823 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-18 19:34:51,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:34:51,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-18 19:34:51,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:34:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-18 19:34:52,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:34:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-18 19:34:52,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451532108] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:34:52,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:34:52,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2023-12-18 19:34:52,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78336822] [2023-12-18 19:34:52,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:34:52,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-18 19:34:52,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:34:52,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-18 19:34:52,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=749, Unknown=0, NotChecked=0, Total=992 [2023-12-18 19:34:52,303 INFO L87 Difference]: Start difference. First operand 140 states and 153 transitions. Second operand has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:34:52,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:34:52,607 INFO L93 Difference]: Finished difference Result 233 states and 262 transitions. [2023-12-18 19:34:52,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-18 19:34:52,608 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 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 116 [2023-12-18 19:34:52,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:34:52,608 INFO L225 Difference]: With dead ends: 233 [2023-12-18 19:34:52,608 INFO L226 Difference]: Without dead ends: 126 [2023-12-18 19:34:52,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 203 SyntacticMatches, 18 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=801, Unknown=0, NotChecked=0, Total=1056 [2023-12-18 19:34:52,610 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 19:34:52,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 47 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 19:34:52,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-18 19:34:52,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-12-18 19:34:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.088) internal successors, (136), 125 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:34:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions. [2023-12-18 19:34:52,674 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 116 [2023-12-18 19:34:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:34:52,674 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions. [2023-12-18 19:34:52,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:34:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions. [2023-12-18 19:34:52,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-18 19:34:52,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:34:52,675 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:34:52,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-18 19:34:52,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:34:52,881 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:34:52,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:34:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash -577297770, now seen corresponding path program 19 times [2023-12-18 19:34:52,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:34:52,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859263826] [2023-12-18 19:34:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:34:52,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:34:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:35:13,806 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 57 proven. 438 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:35:13,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:35:13,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859263826] [2023-12-18 19:35:13,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859263826] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:35:13,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581010379] [2023-12-18 19:35:13,806 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 19:35:13,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:35:13,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:35:13,808 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:35:13,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-18 19:35:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:35:13,991 WARN L260 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 390 conjunts are in the unsatisfiable core [2023-12-18 19:35:13,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:35:14,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:35:15,348 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:35:15,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:35:17,704 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-18 19:35:17,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581010379] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:35:17,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:35:17,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 33, 23] total 115 [2023-12-18 19:35:17,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293983940] [2023-12-18 19:35:17,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:35:17,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2023-12-18 19:35:17,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:35:17,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2023-12-18 19:35:17,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=12509, Unknown=0, NotChecked=0, Total=13110 [2023-12-18 19:35:17,719 INFO L87 Difference]: Start difference. First operand 126 states and 136 transitions. Second operand has 115 states, 115 states have (on average 2.765217391304348) internal successors, (318), 115 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:35:29,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:35:29,747 INFO L93 Difference]: Finished difference Result 483 states and 539 transitions. [2023-12-18 19:35:29,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-18 19:35:29,749 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.765217391304348) internal successors, (318), 115 states have internal predecessors, (318), 0 states have call successors, (0), 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 125 [2023-12-18 19:35:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:35:29,750 INFO L225 Difference]: With dead ends: 483 [2023-12-18 19:35:29,750 INFO L226 Difference]: Without dead ends: 337 [2023-12-18 19:35:29,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9278 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=2288, Invalid=31018, Unknown=0, NotChecked=0, Total=33306 [2023-12-18 19:35:29,752 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 262 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 9470 mSolverCounterSat, 1739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 11209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1739 IncrementalHoareTripleChecker+Valid, 9470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-18 19:35:29,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 509 Invalid, 11209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1739 Valid, 9470 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-18 19:35:29,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-12-18 19:35:29,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 207. [2023-12-18 19:35:29,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.0922330097087378) internal successors, (225), 206 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:35:29,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 225 transitions. [2023-12-18 19:35:29,942 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 225 transitions. Word has length 125 [2023-12-18 19:35:29,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:35:29,942 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 225 transitions. [2023-12-18 19:35:29,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 2.765217391304348) internal successors, (318), 115 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:35:29,942 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 225 transitions. [2023-12-18 19:35:29,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-18 19:35:29,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:35:29,953 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:35:29,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-18 19:35:30,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:35:30,159 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:35:30,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:35:30,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1916099623, now seen corresponding path program 20 times [2023-12-18 19:35:30,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:35:30,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661548976] [2023-12-18 19:35:30,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:35:30,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:35:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:35:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2023-12-18 19:35:30,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:35:30,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661548976] [2023-12-18 19:35:30,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661548976] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:35:30,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721056217] [2023-12-18 19:35:30,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:35:30,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:35:30,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:35:30,486 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:35:30,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-18 19:35:30,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 19:35:30,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:35:30,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-18 19:35:30,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:35:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2023-12-18 19:35:30,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:35:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2023-12-18 19:35:31,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721056217] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:35:31,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:35:31,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2023-12-18 19:35:31,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628450761] [2023-12-18 19:35:31,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:35:31,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-18 19:35:31,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:35:31,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-18 19:35:31,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=901, Unknown=0, NotChecked=0, Total=1190 [2023-12-18 19:35:31,004 INFO L87 Difference]: Start difference. First operand 207 states and 225 transitions. Second operand has 35 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 35 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:35:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:35:31,443 INFO L93 Difference]: Finished difference Result 320 states and 356 transitions. [2023-12-18 19:35:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-18 19:35:31,443 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 35 states have internal predecessors, (69), 0 states have call successors, (0), 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 127 [2023-12-18 19:35:31,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:35:31,444 INFO L225 Difference]: With dead ends: 320 [2023-12-18 19:35:31,444 INFO L226 Difference]: Without dead ends: 137 [2023-12-18 19:35:31,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 222 SyntacticMatches, 20 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=958, Unknown=0, NotChecked=0, Total=1260 [2023-12-18 19:35:31,447 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 35 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:35:31,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 104 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 19:35:31,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-18 19:35:31,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-12-18 19:35:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0808823529411764) internal successors, (147), 136 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:35:31,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2023-12-18 19:35:31,524 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 127 [2023-12-18 19:35:31,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:35:31,524 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2023-12-18 19:35:31,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 35 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:35:31,524 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2023-12-18 19:35:31,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-18 19:35:31,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:35:31,541 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:35:31,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-18 19:35:31,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-18 19:35:31,742 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:35:31,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:35:31,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1991824454, now seen corresponding path program 21 times [2023-12-18 19:35:31,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:35:31,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479689925] [2023-12-18 19:35:31,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:35:31,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:35:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:36:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 99 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:36:01,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:36:01,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479689925] [2023-12-18 19:36:01,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479689925] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:36:01,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284432968] [2023-12-18 19:36:01,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 19:36:01,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:36:01,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:36:01,150 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:36:01,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-18 19:36:01,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-18 19:36:01,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:36:01,470 WARN L260 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 440 conjunts are in the unsatisfiable core [2023-12-18 19:36:01,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:36:01,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-18 19:36:01,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-18 19:36:01,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 19:36:11,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:36:11,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:36:11,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:36:11,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:36:11,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:36:11,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:36:11,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:36:11,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 18 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 58 treesize of output 93 [2023-12-18 19:36:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 10 proven. 550 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-18 19:36:11,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:36:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 584 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-18 19:36:25,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284432968] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:36:25,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:36:25,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 62, 74] total 221 [2023-12-18 19:36:25,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491069401] [2023-12-18 19:36:25,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:36:25,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 221 states [2023-12-18 19:36:25,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:36:25,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2023-12-18 19:36:25,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2572, Invalid=46048, Unknown=0, NotChecked=0, Total=48620 [2023-12-18 19:36:25,214 INFO L87 Difference]: Start difference. First operand 137 states and 147 transitions. Second operand has 221 states, 221 states have (on average 1.760180995475113) internal successors, (389), 221 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:36:35,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 19:37:06,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 19:37:11,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 19:37:24,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:37:24,011 INFO L93 Difference]: Finished difference Result 528 states and 597 transitions. [2023-12-18 19:37:24,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2023-12-18 19:37:24,012 INFO L78 Accepts]: Start accepts. Automaton has has 221 states, 221 states have (on average 1.760180995475113) internal successors, (389), 221 states have internal predecessors, (389), 0 states have call successors, (0), 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 136 [2023-12-18 19:37:24,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:37:24,013 INFO L225 Difference]: With dead ends: 528 [2023-12-18 19:37:24,013 INFO L226 Difference]: Without dead ends: 246 [2023-12-18 19:37:24,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 170 SyntacticMatches, 8 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29923 ImplicationChecksByTransitivity, 58.2s TimeCoverageRelationStatistics Valid=10108, Invalid=88802, Unknown=0, NotChecked=0, Total=98910 [2023-12-18 19:37:24,017 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 1621 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 25099 mSolverCounterSat, 6841 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 31943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6841 IncrementalHoareTripleChecker+Valid, 25099 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2023-12-18 19:37:24,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 755 Invalid, 31943 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6841 Valid, 25099 Invalid, 3 Unknown, 0 Unchecked, 25.7s Time] [2023-12-18 19:37:24,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-12-18 19:37:24,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 151. [2023-12-18 19:37:24,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.1) internal successors, (165), 150 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:37:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 165 transitions. [2023-12-18 19:37:24,114 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 165 transitions. Word has length 136 [2023-12-18 19:37:24,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:37:24,114 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 165 transitions. [2023-12-18 19:37:24,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 221 states, 221 states have (on average 1.760180995475113) internal successors, (389), 221 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:37:24,114 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 165 transitions. [2023-12-18 19:37:24,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-18 19:37:24,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:37:24,115 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:37:24,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-18 19:37:24,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-18 19:37:24,322 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:37:24,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:37:24,322 INFO L85 PathProgramCache]: Analyzing trace with hash 44694871, now seen corresponding path program 22 times [2023-12-18 19:37:24,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:37:24,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173062018] [2023-12-18 19:37:24,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:37:24,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:37:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:37:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 56 proven. 65 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2023-12-18 19:37:24,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:37:24,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173062018] [2023-12-18 19:37:24,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173062018] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:37:24,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630220722] [2023-12-18 19:37:24,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 19:37:24,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:37:24,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:37:24,703 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:37:24,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-18 19:37:24,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 19:37:24,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:37:24,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-18 19:37:24,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:37:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 55 proven. 66 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2023-12-18 19:37:25,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:37:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 55 proven. 66 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2023-12-18 19:37:25,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630220722] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:37:25,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:37:25,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 59 [2023-12-18 19:37:25,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628985858] [2023-12-18 19:37:25,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:37:25,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-18 19:37:25,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:37:25,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-18 19:37:25,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=2963, Unknown=0, NotChecked=0, Total=3422 [2023-12-18 19:37:25,727 INFO L87 Difference]: Start difference. First operand 151 states and 165 transitions. Second operand has 59 states, 59 states have (on average 1.6271186440677967) internal successors, (96), 59 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:37:26,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:37:26,708 INFO L93 Difference]: Finished difference Result 286 states and 318 transitions. [2023-12-18 19:37:26,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-18 19:37:26,709 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.6271186440677967) internal successors, (96), 59 states have internal predecessors, (96), 0 states have call successors, (0), 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 142 [2023-12-18 19:37:26,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:37:26,709 INFO L225 Difference]: With dead ends: 286 [2023-12-18 19:37:26,709 INFO L226 Difference]: Without dead ends: 148 [2023-12-18 19:37:26,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 238 SyntacticMatches, 12 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2403 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=929, Invalid=5877, Unknown=0, NotChecked=0, Total=6806 [2023-12-18 19:37:26,711 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 84 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 1520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 19:37:26,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 73 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 1520 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 19:37:26,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-18 19:37:26,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-12-18 19:37:26,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0748299319727892) internal successors, (158), 147 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:37:26,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2023-12-18 19:37:26,859 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 142 [2023-12-18 19:37:26,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:37:26,859 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2023-12-18 19:37:26,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.6271186440677967) internal successors, (96), 59 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:37:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2023-12-18 19:37:26,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-18 19:37:26,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:37:26,864 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:37:26,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-18 19:37:27,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:37:27,069 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:37:27,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:37:27,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1086439446, now seen corresponding path program 23 times [2023-12-18 19:37:27,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:37:27,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566045957] [2023-12-18 19:37:27,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:37:27,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:37:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:38:04,526 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 92 proven. 634 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:38:04,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:38:04,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566045957] [2023-12-18 19:38:04,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566045957] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:38:04,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178962844] [2023-12-18 19:38:04,527 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 19:38:04,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:38:04,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:38:04,528 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:38:04,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-18 19:38:05,116 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-12-18 19:38:05,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:38:05,127 WARN L260 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 486 conjunts are in the unsatisfiable core [2023-12-18 19:38:05,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:38:05,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:38:05,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:38:05,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:38:05,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:38:05,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:38:05,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:38:05,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:38:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 726 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:38:06,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:38:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-18 19:38:10,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178962844] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:38:10,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:38:10,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 39, 27] total 134 [2023-12-18 19:38:10,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381981791] [2023-12-18 19:38:10,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:38:10,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2023-12-18 19:38:10,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:38:10,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2023-12-18 19:38:10,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=659, Invalid=17163, Unknown=0, NotChecked=0, Total=17822 [2023-12-18 19:38:10,456 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand has 134 states, 134 states have (on average 2.791044776119403) internal successors, (374), 134 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:38:28,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:38:28,512 INFO L93 Difference]: Finished difference Result 575 states and 635 transitions. [2023-12-18 19:38:28,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-12-18 19:38:28,512 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 2.791044776119403) internal successors, (374), 134 states have internal predecessors, (374), 0 states have call successors, (0), 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 147 [2023-12-18 19:38:28,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:38:28,513 INFO L225 Difference]: With dead ends: 575 [2023-12-18 19:38:28,513 INFO L226 Difference]: Without dead ends: 409 [2023-12-18 19:38:28,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11957 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=3323, Invalid=45297, Unknown=0, NotChecked=0, Total=48620 [2023-12-18 19:38:28,515 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 406 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 12314 mSolverCounterSat, 2617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 14931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2617 IncrementalHoareTripleChecker+Valid, 12314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-18 19:38:28,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 332 Invalid, 14931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2617 Valid, 12314 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-12-18 19:38:28,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-12-18 19:38:28,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 299. [2023-12-18 19:38:28,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.0906040268456376) internal successors, (325), 298 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:38:28,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 325 transitions. [2023-12-18 19:38:28,724 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 325 transitions. Word has length 147 [2023-12-18 19:38:28,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:38:28,724 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 325 transitions. [2023-12-18 19:38:28,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.791044776119403) internal successors, (374), 134 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:38:28,725 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 325 transitions. [2023-12-18 19:38:28,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-18 19:38:28,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:38:28,725 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:38:28,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-18 19:38:28,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:38:28,933 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:38:28,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:38:28,934 INFO L85 PathProgramCache]: Analyzing trace with hash 621760470, now seen corresponding path program 24 times [2023-12-18 19:38:28,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:38:28,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825437409] [2023-12-18 19:38:28,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:38:28,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:38:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:38:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 55 proven. 89 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2023-12-18 19:38:29,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:38:29,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825437409] [2023-12-18 19:38:29,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825437409] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:38:29,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383202386] [2023-12-18 19:38:29,384 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 19:38:29,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:38:29,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:38:29,385 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:38:29,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-18 19:38:29,922 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-18 19:38:29,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:38:29,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-18 19:38:29,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:38:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 66 proven. 78 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2023-12-18 19:38:30,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:38:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 66 proven. 78 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2023-12-18 19:38:30,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383202386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:38:30,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:38:30,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2023-12-18 19:38:30,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597058260] [2023-12-18 19:38:30,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:38:30,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-18 19:38:30,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:38:30,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-18 19:38:30,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=1247, Unknown=0, NotChecked=0, Total=1640 [2023-12-18 19:38:30,545 INFO L87 Difference]: Start difference. First operand 299 states and 325 transitions. Second operand has 41 states, 41 states have (on average 2.5365853658536586) internal successors, (104), 41 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:38:30,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:38:30,959 INFO L93 Difference]: Finished difference Result 402 states and 442 transitions. [2023-12-18 19:38:30,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-18 19:38:30,960 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.5365853658536586) internal successors, (104), 41 states have internal predecessors, (104), 0 states have call successors, (0), 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 149 [2023-12-18 19:38:30,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:38:30,960 INFO L225 Difference]: With dead ends: 402 [2023-12-18 19:38:30,960 INFO L226 Difference]: Without dead ends: 159 [2023-12-18 19:38:30,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 260 SyntacticMatches, 24 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2023-12-18 19:38:30,961 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:38:30,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 59 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 19:38:30,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-18 19:38:31,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-12-18 19:38:31,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.0696202531645569) internal successors, (169), 158 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:38:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2023-12-18 19:38:31,067 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 149 [2023-12-18 19:38:31,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:38:31,067 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2023-12-18 19:38:31,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.5365853658536586) internal successors, (104), 41 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:38:31,067 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2023-12-18 19:38:31,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-18 19:38:31,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:38:31,068 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:38:31,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-18 19:38:31,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-18 19:38:31,274 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:38:31,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:38:31,274 INFO L85 PathProgramCache]: Analyzing trace with hash 186083910, now seen corresponding path program 25 times [2023-12-18 19:38:31,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:38:31,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885425902] [2023-12-18 19:38:31,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:38:31,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:38:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:39:11,130 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 93 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:39:11,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:39:11,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885425902] [2023-12-18 19:39:11,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885425902] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:39:11,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430000722] [2023-12-18 19:39:11,131 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 19:39:11,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:39:11,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:39:11,132 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:39:11,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-18 19:39:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:39:11,371 WARN L260 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 516 conjunts are in the unsatisfiable core [2023-12-18 19:39:11,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:39:11,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:39:13,055 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 858 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:39:13,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:39:17,610 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-18 19:39:17,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430000722] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:39:17,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:39:17,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 42, 29] total 154 [2023-12-18 19:39:17,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657125153] [2023-12-18 19:39:17,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:39:17,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2023-12-18 19:39:17,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:39:17,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2023-12-18 19:39:17,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=808, Invalid=22754, Unknown=0, NotChecked=0, Total=23562 [2023-12-18 19:39:17,613 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand has 154 states, 154 states have (on average 2.6233766233766236) internal successors, (404), 154 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:39:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:39:41,448 INFO L93 Difference]: Finished difference Result 649 states and 705 transitions. [2023-12-18 19:39:41,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2023-12-18 19:39:41,449 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 154 states have (on average 2.6233766233766236) internal successors, (404), 154 states have internal predecessors, (404), 0 states have call successors, (0), 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 158 [2023-12-18 19:39:41,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:39:41,450 INFO L225 Difference]: With dead ends: 649 [2023-12-18 19:39:41,450 INFO L226 Difference]: Without dead ends: 473 [2023-12-18 19:39:41,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15607 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=3996, Invalid=55296, Unknown=0, NotChecked=0, Total=59292 [2023-12-18 19:39:41,452 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 429 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 14469 mSolverCounterSat, 3101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 17570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3101 IncrementalHoareTripleChecker+Valid, 14469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:39:41,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 582 Invalid, 17570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3101 Valid, 14469 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-12-18 19:39:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-12-18 19:39:41,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 348. [2023-12-18 19:39:41,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.080691642651297) internal successors, (375), 347 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:39:41,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 375 transitions. [2023-12-18 19:39:41,706 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 375 transitions. Word has length 158 [2023-12-18 19:39:41,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:39:41,706 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 375 transitions. [2023-12-18 19:39:41,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 154 states have (on average 2.6233766233766236) internal successors, (404), 154 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:39:41,707 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 375 transitions. [2023-12-18 19:39:41,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-18 19:39:41,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:39:41,707 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:39:41,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-18 19:39:41,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-18 19:39:41,915 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:39:41,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:39:41,915 INFO L85 PathProgramCache]: Analyzing trace with hash 893140417, now seen corresponding path program 26 times [2023-12-18 19:39:41,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:39:41,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345003206] [2023-12-18 19:39:41,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:39:41,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:39:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:39:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 66 proven. 103 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-18 19:39:42,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:39:42,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345003206] [2023-12-18 19:39:42,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345003206] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:39:42,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809556390] [2023-12-18 19:39:42,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:39:42,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:39:42,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:39:42,489 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:39:42,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-18 19:39:42,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 19:39:42,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:39:42,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-18 19:39:42,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:39:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 78 proven. 91 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-18 19:39:42,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:39:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 78 proven. 91 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-18 19:39:43,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809556390] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:39:43,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:39:43,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2023-12-18 19:39:43,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535583357] [2023-12-18 19:39:43,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:39:43,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-18 19:39:43,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:39:43,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-18 19:39:43,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=1441, Unknown=0, NotChecked=0, Total=1892 [2023-12-18 19:39:43,262 INFO L87 Difference]: Start difference. First operand 348 states and 375 transitions. Second operand has 44 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:39:43,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:39:43,730 INFO L93 Difference]: Finished difference Result 473 states and 516 transitions. [2023-12-18 19:39:43,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-18 19:39:43,730 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 0 states have call successors, (0), 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 160 [2023-12-18 19:39:43,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:39:43,731 INFO L225 Difference]: With dead ends: 473 [2023-12-18 19:39:43,731 INFO L226 Difference]: Without dead ends: 170 [2023-12-18 19:39:43,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 279 SyntacticMatches, 26 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1374 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=467, Invalid=1513, Unknown=0, NotChecked=0, Total=1980 [2023-12-18 19:39:43,732 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 37 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:39:43,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 62 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 19:39:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-18 19:39:43,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-12-18 19:39:43,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.0650887573964498) internal successors, (180), 169 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:39:43,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 180 transitions. [2023-12-18 19:39:43,879 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 180 transitions. Word has length 160 [2023-12-18 19:39:43,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:39:43,879 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 180 transitions. [2023-12-18 19:39:43,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:39:43,879 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 180 transitions. [2023-12-18 19:39:43,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-18 19:39:43,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:39:43,880 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:39:43,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-18 19:39:44,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-18 19:39:44,087 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:39:44,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:39:44,087 INFO L85 PathProgramCache]: Analyzing trace with hash -145719914, now seen corresponding path program 27 times [2023-12-18 19:39:44,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:39:44,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044942358] [2023-12-18 19:39:44,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:39:44,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:39:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:40:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 166 proven. 835 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:40:28,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:40:28,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044942358] [2023-12-18 19:40:28,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044942358] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:40:28,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973951621] [2023-12-18 19:40:28,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 19:40:28,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:40:28,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:40:28,655 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:40:28,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-18 19:40:29,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-18 19:40:29,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:40:29,094 WARN L260 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 555 conjunts are in the unsatisfiable core [2023-12-18 19:40:29,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:40:29,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-18 19:40:41,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:40:41,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:40:41,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:40:41,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:40:41,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:40:41,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:40:41,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:40:41,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:40:41,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:40:41,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:40:41,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:40:41,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:40:41,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:40:41,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:40:41,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:40:42,078 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:40:42,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 86 treesize of output 185 [2023-12-18 19:40:42,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 13 proven. 910 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-18 19:40:42,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:40:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 965 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-18 19:40:57,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973951621] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:40:57,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:40:57,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 72, 76] total 247 [2023-12-18 19:40:57,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812961555] [2023-12-18 19:40:57,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:40:57,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 247 states [2023-12-18 19:40:57,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:40:57,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 247 interpolants. [2023-12-18 19:40:57,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3206, Invalid=57556, Unknown=0, NotChecked=0, Total=60762 [2023-12-18 19:40:57,905 INFO L87 Difference]: Start difference. First operand 170 states and 180 transitions. Second operand has 247 states, 247 states have (on average 1.9271255060728745) internal successors, (476), 247 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:51,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:51,630 INFO L93 Difference]: Finished difference Result 477 states and 530 transitions. [2023-12-18 19:41:51,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-12-18 19:41:51,631 INFO L78 Accepts]: Start accepts. Automaton has has 247 states, 247 states have (on average 1.9271255060728745) internal successors, (476), 247 states have internal predecessors, (476), 0 states have call successors, (0), 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 169 [2023-12-18 19:41:51,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:51,645 INFO L225 Difference]: With dead ends: 477 [2023-12-18 19:41:51,645 INFO L226 Difference]: Without dead ends: 323 [2023-12-18 19:41:51,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 232 SyntacticMatches, 19 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33879 ImplicationChecksByTransitivity, 67.1s TimeCoverageRelationStatistics Valid=8878, Invalid=115378, Unknown=0, NotChecked=0, Total=124256 [2023-12-18 19:41:51,650 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 898 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 20757 mSolverCounterSat, 5105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 25862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5105 IncrementalHoareTripleChecker+Valid, 20757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:51,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 583 Invalid, 25862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5105 Valid, 20757 Invalid, 0 Unknown, 0 Unchecked, 18.3s Time] [2023-12-18 19:41:51,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-12-18 19:41:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 183. [2023-12-18 19:41:51,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.0824175824175823) internal successors, (197), 182 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:51,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 197 transitions. [2023-12-18 19:41:51,836 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 197 transitions. Word has length 169 [2023-12-18 19:41:51,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:51,837 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 197 transitions. [2023-12-18 19:41:51,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 247 states, 247 states have (on average 1.9271255060728745) internal successors, (476), 247 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:51,837 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 197 transitions. [2023-12-18 19:41:51,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-18 19:41:51,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:51,837 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:41:51,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-18 19:41:52,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:52,045 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:52,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:52,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1939205915, now seen corresponding path program 28 times [2023-12-18 19:41:52,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:52,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470876659] [2023-12-18 19:41:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:52,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 92 proven. 104 refuted. 0 times theorem prover too weak. 875 trivial. 0 not checked. [2023-12-18 19:41:52,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:52,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470876659] [2023-12-18 19:41:52,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470876659] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:52,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514947858] [2023-12-18 19:41:52,887 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 19:41:52,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:52,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:52,888 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:41:52,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-18 19:41:53,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 19:41:53,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:41:53,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-18 19:41:53,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 91 proven. 105 refuted. 0 times theorem prover too weak. 875 trivial. 0 not checked. [2023-12-18 19:41:53,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:41:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 91 proven. 105 refuted. 0 times theorem prover too weak. 875 trivial. 0 not checked. [2023-12-18 19:41:54,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514947858] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:41:54,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:41:54,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 74 [2023-12-18 19:41:54,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728771509] [2023-12-18 19:41:54,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:41:54,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-18 19:41:54,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:41:54,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-18 19:41:54,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=708, Invalid=4694, Unknown=0, NotChecked=0, Total=5402 [2023-12-18 19:41:54,408 INFO L87 Difference]: Start difference. First operand 183 states and 197 transitions. Second operand has 74 states, 74 states have (on average 1.5) internal successors, (111), 74 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:56,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:41:56,038 INFO L93 Difference]: Finished difference Result 376 states and 409 transitions. [2023-12-18 19:41:56,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-18 19:41:56,038 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.5) internal successors, (111), 74 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2023-12-18 19:41:56,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:41:56,039 INFO L225 Difference]: With dead ends: 376 [2023-12-18 19:41:56,039 INFO L226 Difference]: Without dead ends: 196 [2023-12-18 19:41:56,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 290 SyntacticMatches, 15 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3957 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1461, Invalid=9459, Unknown=0, NotChecked=0, Total=10920 [2023-12-18 19:41:56,042 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 131 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 969 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 3646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 969 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 19:41:56,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 118 Invalid, 3646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [969 Valid, 2677 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 19:41:56,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-18 19:41:56,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 180. [2023-12-18 19:41:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.0614525139664805) internal successors, (190), 179 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 190 transitions. [2023-12-18 19:41:56,337 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 190 transitions. Word has length 174 [2023-12-18 19:41:56,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:41:56,337 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 190 transitions. [2023-12-18 19:41:56,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.5) internal successors, (111), 74 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:41:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 190 transitions. [2023-12-18 19:41:56,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-18 19:41:56,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:41:56,338 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:41:56,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-18 19:41:56,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:56,545 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:41:56,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:41:56,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1866346159, now seen corresponding path program 29 times [2023-12-18 19:41:56,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:41:56,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426909126] [2023-12-18 19:41:56,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:41:56,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:41:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:41:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 78 proven. 118 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2023-12-18 19:41:57,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:41:57,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426909126] [2023-12-18 19:41:57,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426909126] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:41:57,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327088062] [2023-12-18 19:41:57,223 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 19:41:57,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:41:57,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:41:57,224 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:41:57,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-18 19:41:59,127 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-12-18 19:41:59,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:41:59,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-18 19:41:59,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:41:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2023-12-18 19:41:59,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:42:00,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2023-12-18 19:42:00,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327088062] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:42:00,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:42:00,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 74 [2023-12-18 19:42:00,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22248545] [2023-12-18 19:42:00,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:42:00,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-18 19:42:00,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:42:00,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-18 19:42:00,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=721, Invalid=4681, Unknown=0, NotChecked=0, Total=5402 [2023-12-18 19:42:00,358 INFO L87 Difference]: Start difference. First operand 180 states and 190 transitions. Second operand has 74 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 74 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:42:01,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:42:01,167 INFO L93 Difference]: Finished difference Result 329 states and 348 transitions. [2023-12-18 19:42:01,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-18 19:42:01,167 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 74 states have internal predecessors, (110), 0 states have call successors, (0), 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 179 [2023-12-18 19:42:01,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:42:01,168 INFO L225 Difference]: With dead ends: 329 [2023-12-18 19:42:01,168 INFO L226 Difference]: Without dead ends: 181 [2023-12-18 19:42:01,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 300 SyntacticMatches, 15 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2968 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1066, Invalid=6766, Unknown=0, NotChecked=0, Total=7832 [2023-12-18 19:42:01,169 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 180 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 19:42:01,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 96 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 19:42:01,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-18 19:42:01,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-12-18 19:42:01,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.0611111111111111) internal successors, (191), 180 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:42:01,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 191 transitions. [2023-12-18 19:42:01,362 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 191 transitions. Word has length 179 [2023-12-18 19:42:01,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:42:01,362 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 191 transitions. [2023-12-18 19:42:01,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 74 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:42:01,362 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 191 transitions. [2023-12-18 19:42:01,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-18 19:42:01,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:42:01,363 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:42:01,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-18 19:42:01,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:42:01,573 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:42:01,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:42:01,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1091608646, now seen corresponding path program 30 times [2023-12-18 19:42:01,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:42:01,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910648319] [2023-12-18 19:42:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:42:01,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:42:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:42:57,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 187 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:42:57,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:42:57,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910648319] [2023-12-18 19:42:57,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910648319] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:42:57,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709027037] [2023-12-18 19:42:57,467 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 19:42:57,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:42:57,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:42:57,471 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:42:57,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-18 19:42:58,106 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-12-18 19:42:58,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:42:58,118 WARN L260 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 617 conjunts are in the unsatisfiable core [2023-12-18 19:42:58,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:42:58,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:42:58,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-18 19:43:06,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:43:06,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:43:06,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-18 19:43:06,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 19:43:06,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 44 treesize of output 59 [2023-12-18 19:43:06,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:43:06,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:43:26,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:43:26,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709027037] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:43:26,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:43:26,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 52, 92] total 265 [2023-12-18 19:43:26,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916537208] [2023-12-18 19:43:26,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:43:26,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 265 states [2023-12-18 19:43:26,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:43:26,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 265 interpolants. [2023-12-18 19:43:26,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3387, Invalid=66573, Unknown=0, NotChecked=0, Total=69960 [2023-12-18 19:43:26,146 INFO L87 Difference]: Start difference. First operand 181 states and 191 transitions. Second operand has 265 states, 265 states have (on average 1.9773584905660377) internal successors, (524), 265 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:44:08,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-18 19:44:29,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:44:29,146 INFO L93 Difference]: Finished difference Result 853 states and 933 transitions. [2023-12-18 19:44:29,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2023-12-18 19:44:29,147 INFO L78 Accepts]: Start accepts. Automaton has has 265 states, 265 states have (on average 1.9773584905660377) internal successors, (524), 265 states have internal predecessors, (524), 0 states have call successors, (0), 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 180 [2023-12-18 19:44:29,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:44:29,148 INFO L225 Difference]: With dead ends: 853 [2023-12-18 19:44:29,148 INFO L226 Difference]: Without dead ends: 586 [2023-12-18 19:44:29,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 257 SyntacticMatches, 9 SemanticMatches, 371 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44807 ImplicationChecksByTransitivity, 67.1s TimeCoverageRelationStatistics Valid=9605, Invalid=129150, Unknown=1, NotChecked=0, Total=138756 [2023-12-18 19:44:29,153 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 817 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 32767 mSolverCounterSat, 4181 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 36949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4181 IncrementalHoareTripleChecker+Valid, 32767 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2023-12-18 19:44:29,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 916 Invalid, 36949 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4181 Valid, 32767 Invalid, 1 Unknown, 0 Unchecked, 28.5s Time] [2023-12-18 19:44:29,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2023-12-18 19:44:29,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 396. [2023-12-18 19:44:29,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 1.070886075949367) internal successors, (423), 395 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:44:29,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 423 transitions. [2023-12-18 19:44:29,605 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 423 transitions. Word has length 180 [2023-12-18 19:44:29,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:44:29,606 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 423 transitions. [2023-12-18 19:44:29,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 265 states, 265 states have (on average 1.9773584905660377) internal successors, (524), 265 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:44:29,606 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 423 transitions. [2023-12-18 19:44:29,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-18 19:44:29,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:44:29,607 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:44:29,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-18 19:44:29,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-18 19:44:29,815 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:44:29,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:44:29,815 INFO L85 PathProgramCache]: Analyzing trace with hash 229772609, now seen corresponding path program 31 times [2023-12-18 19:44:29,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:44:29,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049874451] [2023-12-18 19:44:29,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:44:29,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:44:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:44:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 91 proven. 134 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2023-12-18 19:44:30,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:44:30,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049874451] [2023-12-18 19:44:30,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049874451] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 19:44:30,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347707553] [2023-12-18 19:44:30,484 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 19:44:30,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:44:30,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:44:30,485 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:44:30,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-18 19:44:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:44:30,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-18 19:44:30,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:44:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 105 proven. 120 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2023-12-18 19:44:31,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:44:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 105 proven. 120 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2023-12-18 19:44:31,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347707553] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:44:31,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 19:44:31,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2023-12-18 19:44:31,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013642121] [2023-12-18 19:44:31,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 19:44:31,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-18 19:44:31,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:44:31,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-18 19:44:31,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=1871, Unknown=0, NotChecked=0, Total=2450 [2023-12-18 19:44:31,390 INFO L87 Difference]: Start difference. First operand 396 states and 423 transitions. Second operand has 50 states, 50 states have (on average 1.68) internal successors, (84), 50 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:44:32,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:44:32,001 INFO L93 Difference]: Finished difference Result 537 states and 580 transitions. [2023-12-18 19:44:32,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-18 19:44:32,001 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.68) internal successors, (84), 50 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2023-12-18 19:44:32,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:44:32,002 INFO L225 Difference]: With dead ends: 537 [2023-12-18 19:44:32,002 INFO L226 Difference]: Without dead ends: 192 [2023-12-18 19:44:32,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 317 SyntacticMatches, 30 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1813 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=1953, Unknown=0, NotChecked=0, Total=2550 [2023-12-18 19:44:32,003 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 136 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:44:32,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 62 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 19:44:32,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-18 19:44:32,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2023-12-18 19:44:32,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.057591623036649) internal successors, (202), 191 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:44:32,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 202 transitions. [2023-12-18 19:44:32,265 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 202 transitions. Word has length 182 [2023-12-18 19:44:32,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:44:32,265 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 202 transitions. [2023-12-18 19:44:32,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.68) internal successors, (84), 50 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:44:32,265 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 202 transitions. [2023-12-18 19:44:32,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-18 19:44:32,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:44:32,266 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:44:32,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-18 19:44:32,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:44:32,472 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:44:32,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:44:32,473 INFO L85 PathProgramCache]: Analyzing trace with hash -864068842, now seen corresponding path program 32 times [2023-12-18 19:44:32,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:44:32,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741076033] [2023-12-18 19:44:32,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:44:32,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:44:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-18 19:44:53,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-18 19:44:53,514 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Termination requested (timeout or resource limit) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:152) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:869) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:793) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-18 19:44:53,517 INFO L158 Benchmark]: Toolchain (without parser) took 841028.77ms. Allocated memory was 173.0MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 124.9MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-18 19:44:53,517 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 173.0MB. Free memory is still 124.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 19:44:53,518 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.75ms. Allocated memory is still 173.0MB. Free memory was 124.9MB in the beginning and 113.1MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-18 19:44:53,518 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.27ms. Allocated memory is still 173.0MB. Free memory was 113.1MB in the beginning and 111.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 19:44:53,518 INFO L158 Benchmark]: Boogie Preprocessor took 36.79ms. Allocated memory is still 173.0MB. Free memory was 111.3MB in the beginning and 108.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 19:44:53,518 INFO L158 Benchmark]: RCFGBuilder took 372.68ms. Allocated memory is still 173.0MB. Free memory was 108.9MB in the beginning and 92.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-18 19:44:53,518 INFO L158 Benchmark]: TraceAbstraction took 840410.63ms. Allocated memory was 173.0MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 91.4MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-18 19:44:53,519 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 173.0MB. Free memory is still 124.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 172.75ms. Allocated memory is still 173.0MB. Free memory was 124.9MB in the beginning and 113.1MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.27ms. Allocated memory is still 173.0MB. Free memory was 113.1MB in the beginning and 111.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.79ms. Allocated memory is still 173.0MB. Free memory was 111.3MB in the beginning and 108.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 372.68ms. Allocated memory is still 173.0MB. Free memory was 108.9MB in the beginning and 92.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 840410.63ms. Allocated memory was 173.0MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 91.4MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Termination requested (timeout or resource limit) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Termination requested (timeout or resource limit): de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown