/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/loops-crafted-1/loopv3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 18:21:41,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 18:21:41,182 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 18:21:41,186 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 18:21:41,186 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 18:21:41,208 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 18:21:41,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 18:21:41,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 18:21:41,209 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 18:21:41,212 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 18:21:41,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 18:21:41,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 18:21:41,213 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 18:21:41,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 18:21:41,214 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 18:21:41,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 18:21:41,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 18:21:41,214 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 18:21:41,214 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 18:21:41,215 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 18:21:41,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 18:21:41,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 18:21:41,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 18:21:41,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 18:21:41,216 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 18:21:41,216 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 18:21:41,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 18:21:41,217 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 18:21:41,217 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 18:21:41,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 18:21:41,218 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 18:21:41,218 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 18:21:41,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 18:21:41,218 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 18:21:41,218 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 18:21:41,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 18:21:41,219 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 18:21:41,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 18:21:41,219 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 18:21:41,219 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 18:21:41,219 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 18:21:41,219 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 18:21:41,219 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 18:21:41,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 18:21:41,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 18:21:41,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 18:21:41,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 18:21:41,416 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 18:21:41,417 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 18:21:41,418 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv3.c [2023-12-19 18:21:42,347 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 18:21:42,458 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 18:21:42,459 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c [2023-12-19 18:21:42,463 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97bec4ed/7da6f85e7e7d4c499de3a92d563dfd54/FLAGdc44bdba4 [2023-12-19 18:21:42,472 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97bec4ed/7da6f85e7e7d4c499de3a92d563dfd54 [2023-12-19 18:21:42,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 18:21:42,475 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 18:21:42,476 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 18:21:42,476 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 18:21:42,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 18:21:42,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:21:42" (1/1) ... [2023-12-19 18:21:42,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18da7322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:21:42, skipping insertion in model container [2023-12-19 18:21:42,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:21:42" (1/1) ... [2023-12-19 18:21:42,493 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 18:21:42,602 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c[456,469] [2023-12-19 18:21:42,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 18:21:42,620 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 18:21:42,630 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c[456,469] [2023-12-19 18:21:42,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 18:21:42,643 INFO L206 MainTranslator]: Completed translation [2023-12-19 18:21:42,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:21:42 WrapperNode [2023-12-19 18:21:42,643 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 18:21:42,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 18:21:42,645 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 18:21:42,645 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 18:21:42,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:21:42" (1/1) ... [2023-12-19 18:21:42,653 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:21:42" (1/1) ... [2023-12-19 18:21:42,664 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2023-12-19 18:21:42,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 18:21:42,665 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 18:21:42,665 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 18:21:42,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 18:21:42,672 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:21:42" (1/1) ... [2023-12-19 18:21:42,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:21:42" (1/1) ... [2023-12-19 18:21:42,673 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:21:42" (1/1) ... [2023-12-19 18:21:42,683 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 18:21:42,684 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:21:42" (1/1) ... [2023-12-19 18:21:42,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:21:42" (1/1) ... [2023-12-19 18:21:42,686 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:21:42" (1/1) ... [2023-12-19 18:21:42,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:21:42" (1/1) ... [2023-12-19 18:21:42,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:21:42" (1/1) ... [2023-12-19 18:21:42,690 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:21:42" (1/1) ... [2023-12-19 18:21:42,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 18:21:42,697 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 18:21:42,697 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 18:21:42,697 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 18:21:42,698 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:21:42" (1/1) ... [2023-12-19 18:21:42,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 18:21:42,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:21:42,728 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) [2023-12-19 18:21:42,746 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 [2023-12-19 18:21:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 18:21:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 18:21:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 18:21:42,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 18:21:42,795 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 18:21:42,797 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 18:21:42,887 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 18:21:42,907 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 18:21:42,907 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 18:21:42,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:21:42 BoogieIcfgContainer [2023-12-19 18:21:42,908 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 18:21:42,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 18:21:42,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 18:21:42,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 18:21:42,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:21:42" (1/3) ... [2023-12-19 18:21:42,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fab0098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:21:42, skipping insertion in model container [2023-12-19 18:21:42,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:21:42" (2/3) ... [2023-12-19 18:21:42,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fab0098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:21:42, skipping insertion in model container [2023-12-19 18:21:42,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:21:42" (3/3) ... [2023-12-19 18:21:42,913 INFO L112 eAbstractionObserver]: Analyzing ICFG loopv3.c [2023-12-19 18:21:42,924 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 18:21:42,924 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 18:21:42,960 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 18:21:42,969 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;@38b2d2f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 18:21:42,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 18:21:42,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:42,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-19 18:21:42,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:21:42,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-19 18:21:42,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:21:42,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:21:42,985 INFO L85 PathProgramCache]: Analyzing trace with hash 63386408, now seen corresponding path program 1 times [2023-12-19 18:21:42,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:21:42,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730628677] [2023-12-19 18:21:42,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:21:42,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:21:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:21:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:43,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:21:43,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730628677] [2023-12-19 18:21:43,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730628677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:21:43,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:21:43,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 18:21:43,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180130412] [2023-12-19 18:21:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:21:43,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 18:21:43,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:21:43,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 18:21:43,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 18:21:43,099 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:43,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:21:43,130 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2023-12-19 18:21:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 18:21:43,132 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-12-19 18:21:43,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:21:43,136 INFO L225 Difference]: With dead ends: 15 [2023-12-19 18:21:43,136 INFO L226 Difference]: Without dead ends: 7 [2023-12-19 18:21:43,138 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 [2023-12-19 18:21:43,140 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:21:43,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:21:43,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-12-19 18:21:43,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-12-19 18:21:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:43,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2023-12-19 18:21:43,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2023-12-19 18:21:43,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:21:43,159 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-12-19 18:21:43,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:43,159 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2023-12-19 18:21:43,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-19 18:21:43,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:21:43,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-19 18:21:43,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 18:21:43,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:21:43,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:21:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash 63088498, now seen corresponding path program 1 times [2023-12-19 18:21:43,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:21:43,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51283442] [2023-12-19 18:21:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:21:43,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:21:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:21:43,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:43,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:21:43,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51283442] [2023-12-19 18:21:43,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51283442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:21:43,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:21:43,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 18:21:43,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986082505] [2023-12-19 18:21:43,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:21:43,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 18:21:43,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:21:43,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 18:21:43,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 18:21:43,275 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:43,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:21:43,305 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2023-12-19 18:21:43,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 18:21:43,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-12-19 18:21:43,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:21:43,307 INFO L225 Difference]: With dead ends: 13 [2023-12-19 18:21:43,307 INFO L226 Difference]: Without dead ends: 9 [2023-12-19 18:21:43,308 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 [2023-12-19 18:21:43,308 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:21:43,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:21:43,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-19 18:21:43,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-19 18:21:43,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:43,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2023-12-19 18:21:43,311 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2023-12-19 18:21:43,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:21:43,311 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-12-19 18:21:43,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:43,311 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-12-19 18:21:43,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-19 18:21:43,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:21:43,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:21:43,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 18:21:43,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:21:43,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:21:43,312 INFO L85 PathProgramCache]: Analyzing trace with hash 550694231, now seen corresponding path program 1 times [2023-12-19 18:21:43,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:21:43,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47653951] [2023-12-19 18:21:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:21:43,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:21:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:21:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:43,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:21:43,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47653951] [2023-12-19 18:21:43,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47653951] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:21:43,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894579259] [2023-12-19 18:21:43,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:21:43,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:21:43,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:21:43,390 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) [2023-12-19 18:21:43,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 18:21:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:21:43,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 18:21:43,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:21:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:43,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:21:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:43,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894579259] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:21:43,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:21:43,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-12-19 18:21:43,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685472970] [2023-12-19 18:21:43,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:21:43,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 18:21:43,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:21:43,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 18:21:43,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-19 18:21:43,524 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:21:43,557 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2023-12-19 18:21:43,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 18:21:43,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 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 7 [2023-12-19 18:21:43,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:21:43,558 INFO L225 Difference]: With dead ends: 18 [2023-12-19 18:21:43,558 INFO L226 Difference]: Without dead ends: 14 [2023-12-19 18:21:43,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-19 18:21:43,559 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:21:43,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 10 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:21:43,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-19 18:21:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-19 18:21:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:43,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2023-12-19 18:21:43,564 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 7 [2023-12-19 18:21:43,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:21:43,564 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2023-12-19 18:21:43,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2023-12-19 18:21:43,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-19 18:21:43,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:21:43,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-12-19 18:21:43,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 18:21:43,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:21:43,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:21:43,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:21:43,770 INFO L85 PathProgramCache]: Analyzing trace with hash -788486024, now seen corresponding path program 1 times [2023-12-19 18:21:43,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:21:43,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923450907] [2023-12-19 18:21:43,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:21:43,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:21:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:21:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:43,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:21:43,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923450907] [2023-12-19 18:21:43,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923450907] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:21:43,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890327319] [2023-12-19 18:21:43,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:21:43,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:21:43,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:21:43,826 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) [2023-12-19 18:21:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:21:43,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 18:21:43,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 18:21:43,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:21:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:43,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:21:43,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:43,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890327319] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:21:43,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:21:43,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-12-19 18:21:43,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978845825] [2023-12-19 18:21:43,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:21:43,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 18:21:43,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:21:43,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 18:21:43,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2023-12-19 18:21:43,959 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:44,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:21:44,006 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2023-12-19 18:21:44,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 18:21:44,006 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 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 9 [2023-12-19 18:21:44,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:21:44,008 INFO L225 Difference]: With dead ends: 28 [2023-12-19 18:21:44,008 INFO L226 Difference]: Without dead ends: 24 [2023-12-19 18:21:44,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2023-12-19 18:21:44,012 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:21:44,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:21:44,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-19 18:21:44,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2023-12-19 18:21:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2023-12-19 18:21:44,017 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 9 [2023-12-19 18:21:44,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:21:44,017 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2023-12-19 18:21:44,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:44,017 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2023-12-19 18:21:44,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-19 18:21:44,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:21:44,018 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1] [2023-12-19 18:21:44,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 18:21:44,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-19 18:21:44,224 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:21:44,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:21:44,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1746265072, now seen corresponding path program 2 times [2023-12-19 18:21:44,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:21:44,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394429567] [2023-12-19 18:21:44,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:21:44,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:21:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:21:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:44,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:21:44,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394429567] [2023-12-19 18:21:44,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394429567] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:21:44,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108915557] [2023-12-19 18:21:44,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 18:21:44,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:21:44,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:21:44,388 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) [2023-12-19 18:21:44,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 18:21:44,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 18:21:44,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:21:44,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 18:21:44,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:21:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:44,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:21:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:44,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108915557] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:21:44,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:21:44,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-19 18:21:44,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794353129] [2023-12-19 18:21:44,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:21:44,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 18:21:44,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:21:44,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 18:21:44,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=268, Unknown=0, NotChecked=0, Total=506 [2023-12-19 18:21:44,631 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:44,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:21:44,698 INFO L93 Difference]: Finished difference Result 60 states and 90 transitions. [2023-12-19 18:21:44,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 18:21:44,698 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-19 18:21:44,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:21:44,699 INFO L225 Difference]: With dead ends: 60 [2023-12-19 18:21:44,699 INFO L226 Difference]: Without dead ends: 56 [2023-12-19 18:21:44,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=238, Invalid=268, Unknown=0, NotChecked=0, Total=506 [2023-12-19 18:21:44,700 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:21:44,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 18:21:44,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-19 18:21:44,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2023-12-19 18:21:44,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 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) [2023-12-19 18:21:44,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2023-12-19 18:21:44,705 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2023-12-19 18:21:44,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:21:44,706 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2023-12-19 18:21:44,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:44,706 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2023-12-19 18:21:44,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-19 18:21:44,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:21:44,706 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1] [2023-12-19 18:21:44,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 18:21:44,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:21:44,915 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:21:44,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:21:44,916 INFO L85 PathProgramCache]: Analyzing trace with hash 174531214, now seen corresponding path program 1 times [2023-12-19 18:21:44,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:21:44,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136260921] [2023-12-19 18:21:44,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:21:44,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:21:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:21:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:45,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:21:45,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136260921] [2023-12-19 18:21:45,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136260921] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:21:45,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305214025] [2023-12-19 18:21:45,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:21:45,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:21:45,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:21:45,061 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) [2023-12-19 18:21:45,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 18:21:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:21:45,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 18:21:45,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:21:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:45,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:21:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:45,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305214025] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:21:45,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:21:45,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-12-19 18:21:45,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938894029] [2023-12-19 18:21:45,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:21:45,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 18:21:45,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:21:45,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 18:21:45,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=434, Unknown=0, NotChecked=0, Total=812 [2023-12-19 18:21:45,330 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 28 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:45,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:21:45,412 INFO L93 Difference]: Finished difference Result 118 states and 178 transitions. [2023-12-19 18:21:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 18:21:45,412 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 28 states have internal predecessors, (57), 0 states have call successors, (0), 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 21 [2023-12-19 18:21:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:21:45,413 INFO L225 Difference]: With dead ends: 118 [2023-12-19 18:21:45,413 INFO L226 Difference]: Without dead ends: 114 [2023-12-19 18:21:45,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=434, Unknown=0, NotChecked=0, Total=812 [2023-12-19 18:21:45,414 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:21:45,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 18:21:45,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-19 18:21:45,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 42. [2023-12-19 18:21:45,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 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) [2023-12-19 18:21:45,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2023-12-19 18:21:45,422 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 21 [2023-12-19 18:21:45,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:21:45,423 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2023-12-19 18:21:45,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 28 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:45,423 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2023-12-19 18:21:45,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-19 18:21:45,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:21:45,423 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 4, 1, 1, 1, 1, 1] [2023-12-19 18:21:45,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 18:21:45,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:21:45,628 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:21:45,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:21:45,628 INFO L85 PathProgramCache]: Analyzing trace with hash -114266064, now seen corresponding path program 2 times [2023-12-19 18:21:45,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:21:45,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441117432] [2023-12-19 18:21:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:21:45,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:21:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:21:45,834 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:45,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:21:45,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441117432] [2023-12-19 18:21:45,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441117432] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:21:45,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914437025] [2023-12-19 18:21:45,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 18:21:45,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:21:45,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:21:45,836 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) [2023-12-19 18:21:45,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 18:21:45,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 18:21:45,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:21:45,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 18:21:45,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:21:46,078 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:46,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:21:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:46,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914437025] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:21:46,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:21:46,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 46 [2023-12-19 18:21:46,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090036127] [2023-12-19 18:21:46,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:21:46,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-19 18:21:46,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:21:46,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-19 18:21:46,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=1172, Unknown=0, NotChecked=0, Total=2162 [2023-12-19 18:21:46,377 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand has 47 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:46,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:21:46,498 INFO L93 Difference]: Finished difference Result 264 states and 400 transitions. [2023-12-19 18:21:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-19 18:21:46,498 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-19 18:21:46,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:21:46,502 INFO L225 Difference]: With dead ends: 264 [2023-12-19 18:21:46,502 INFO L226 Difference]: Without dead ends: 260 [2023-12-19 18:21:46,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=990, Invalid=1172, Unknown=0, NotChecked=0, Total=2162 [2023-12-19 18:21:46,503 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:21:46,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 18:21:46,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-19 18:21:46,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 66. [2023-12-19 18:21:46,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.476923076923077) internal successors, (96), 65 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) [2023-12-19 18:21:46,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 96 transitions. [2023-12-19 18:21:46,525 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 96 transitions. Word has length 33 [2023-12-19 18:21:46,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:21:46,525 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 96 transitions. [2023-12-19 18:21:46,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 46 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:46,525 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 96 transitions. [2023-12-19 18:21:46,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-19 18:21:46,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:21:46,527 INFO L195 NwaCegarLoop]: trace histogram [18, 12, 6, 1, 1, 1, 1, 1] [2023-12-19 18:21:46,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 18:21:46,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:21:46,731 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:21:46,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:21:46,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1105070284, now seen corresponding path program 3 times [2023-12-19 18:21:46,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:21:46,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886216563] [2023-12-19 18:21:46,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:21:46,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:21:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:21:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:47,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:21:47,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886216563] [2023-12-19 18:21:47,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886216563] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:21:47,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094301422] [2023-12-19 18:21:47,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 18:21:47,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:21:47,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:21:47,045 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) [2023-12-19 18:21:47,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 18:21:47,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2023-12-19 18:21:47,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:21:47,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 18:21:47,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:21:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:47,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:21:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:47,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094301422] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:21:47,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:21:47,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 58 [2023-12-19 18:21:47,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816687639] [2023-12-19 18:21:47,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:21:47,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-19 18:21:47,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:21:47,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-19 18:21:47,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1558, Invalid=1864, Unknown=0, NotChecked=0, Total=3422 [2023-12-19 18:21:47,755 INFO L87 Difference]: Start difference. First operand 66 states and 96 transitions. Second operand has 59 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 58 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:47,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:21:47,948 INFO L93 Difference]: Finished difference Result 508 states and 768 transitions. [2023-12-19 18:21:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-19 18:21:47,948 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 58 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-19 18:21:47,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:21:47,950 INFO L225 Difference]: With dead ends: 508 [2023-12-19 18:21:47,950 INFO L226 Difference]: Without dead ends: 504 [2023-12-19 18:21:47,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1558, Invalid=1864, Unknown=0, NotChecked=0, Total=3422 [2023-12-19 18:21:47,951 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:21:47,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 26 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 18:21:47,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-12-19 18:21:47,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 82. [2023-12-19 18:21:47,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.4814814814814814) internal successors, (120), 81 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 120 transitions. [2023-12-19 18:21:47,974 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 120 transitions. Word has length 41 [2023-12-19 18:21:47,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:21:47,974 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 120 transitions. [2023-12-19 18:21:47,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 58 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:47,974 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 120 transitions. [2023-12-19 18:21:47,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-19 18:21:47,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:21:47,975 INFO L195 NwaCegarLoop]: trace histogram [30, 22, 8, 1, 1, 1, 1, 1] [2023-12-19 18:21:47,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 18:21:48,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:21:48,180 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:21:48,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:21:48,181 INFO L85 PathProgramCache]: Analyzing trace with hash -787271048, now seen corresponding path program 4 times [2023-12-19 18:21:48,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:21:48,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54086847] [2023-12-19 18:21:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:21:48,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:21:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:21:48,737 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:48,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:21:48,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54086847] [2023-12-19 18:21:48,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54086847] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:21:48,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531788271] [2023-12-19 18:21:48,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 18:21:48,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:21:48,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:21:48,738 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) [2023-12-19 18:21:48,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 18:21:48,782 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 18:21:48,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:21:48,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-19 18:21:48,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:21:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:49,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:21:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:50,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531788271] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:21:50,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:21:50,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 94 [2023-12-19 18:21:50,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264578361] [2023-12-19 18:21:50,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:21:50,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-12-19 18:21:50,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:21:50,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-12-19 18:21:50,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4030, Invalid=4900, Unknown=0, NotChecked=0, Total=8930 [2023-12-19 18:21:50,398 INFO L87 Difference]: Start difference. First operand 82 states and 120 transitions. Second operand has 95 states, 95 states have (on average 1.9894736842105263) internal successors, (189), 94 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:50,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:21:50,759 INFO L93 Difference]: Finished difference Result 1052 states and 1590 transitions. [2023-12-19 18:21:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-19 18:21:50,760 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.9894736842105263) internal successors, (189), 94 states have internal predecessors, (189), 0 states have call successors, (0), 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 65 [2023-12-19 18:21:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:21:50,765 INFO L225 Difference]: With dead ends: 1052 [2023-12-19 18:21:50,766 INFO L226 Difference]: Without dead ends: 1048 [2023-12-19 18:21:50,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3749 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4030, Invalid=4900, Unknown=0, NotChecked=0, Total=8930 [2023-12-19 18:21:50,768 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:21:50,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 10 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 18:21:50,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2023-12-19 18:21:50,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 130. [2023-12-19 18:21:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.4883720930232558) internal successors, (192), 129 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 192 transitions. [2023-12-19 18:21:50,825 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 192 transitions. Word has length 65 [2023-12-19 18:21:50,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:21:50,825 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 192 transitions. [2023-12-19 18:21:50,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.9894736842105263) internal successors, (189), 94 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:50,825 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 192 transitions. [2023-12-19 18:21:50,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-19 18:21:50,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:21:50,826 INFO L195 NwaCegarLoop]: trace histogram [36, 26, 10, 1, 1, 1, 1, 1] [2023-12-19 18:21:50,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 18:21:51,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:21:51,031 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:21:51,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:21:51,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1006131214, now seen corresponding path program 5 times [2023-12-19 18:21:51,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:21:51,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960164489] [2023-12-19 18:21:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:21:51,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:21:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:21:51,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:51,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:21:51,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960164489] [2023-12-19 18:21:51,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960164489] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:21:51,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640289065] [2023-12-19 18:21:51,845 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 18:21:51,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:21:51,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:21:51,846 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) [2023-12-19 18:21:51,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 18:21:51,906 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2023-12-19 18:21:51,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:21:51,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-19 18:21:51,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:21:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:52,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:21:54,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:54,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640289065] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:21:54,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:21:54,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 112 [2023-12-19 18:21:54,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145682968] [2023-12-19 18:21:54,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:21:54,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2023-12-19 18:21:54,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:21:54,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2023-12-19 18:21:54,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5698, Invalid=6958, Unknown=0, NotChecked=0, Total=12656 [2023-12-19 18:21:54,093 INFO L87 Difference]: Start difference. First operand 130 states and 192 transitions. Second operand has 113 states, 113 states have (on average 1.991150442477876) internal successors, (225), 112 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) [2023-12-19 18:21:55,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:21:55,009 INFO L93 Difference]: Finished difference Result 2557 states and 3848 transitions. [2023-12-19 18:21:55,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-19 18:21:55,010 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.991150442477876) internal successors, (225), 112 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) Word has length 77 [2023-12-19 18:21:55,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:21:55,018 INFO L225 Difference]: With dead ends: 2557 [2023-12-19 18:21:55,018 INFO L226 Difference]: Without dead ends: 2553 [2023-12-19 18:21:55,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5363 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5698, Invalid=6958, Unknown=0, NotChecked=0, Total=12656 [2023-12-19 18:21:55,022 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:21:55,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 32 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 18:21:55,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2023-12-19 18:21:55,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 306. [2023-12-19 18:21:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.4950819672131148) internal successors, (456), 305 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:21:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 456 transitions. [2023-12-19 18:21:55,201 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 456 transitions. Word has length 77 [2023-12-19 18:21:55,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:21:55,201 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 456 transitions. [2023-12-19 18:21:55,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.991150442477876) internal successors, (225), 112 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) [2023-12-19 18:21:55,202 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 456 transitions. [2023-12-19 18:21:55,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-19 18:21:55,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:21:55,203 INFO L195 NwaCegarLoop]: trace histogram [54, 33, 21, 1, 1, 1, 1, 1] [2023-12-19 18:21:55,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 18:21:55,407 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,SelfDestructingSolverStorable9 [2023-12-19 18:21:55,408 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:21:55,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:21:55,408 INFO L85 PathProgramCache]: Analyzing trace with hash -355170858, now seen corresponding path program 6 times [2023-12-19 18:21:55,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:21:55,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892426771] [2023-12-19 18:21:55,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:21:55,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:21:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:21:56,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:56,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:21:56,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892426771] [2023-12-19 18:21:56,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892426771] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:21:56,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942700118] [2023-12-19 18:21:56,933 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 18:21:56,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:21:56,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:21:56,934 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) [2023-12-19 18:21:56,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 18:21:57,015 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2023-12-19 18:21:57,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:21:57,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-19 18:21:57,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:21:58,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:21:58,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:22:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:22:01,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942700118] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:22:01,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:22:01,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 166 [2023-12-19 18:22:01,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414495787] [2023-12-19 18:22:01,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:22:01,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2023-12-19 18:22:01,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:22:01,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2023-12-19 18:22:01,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12430, Invalid=15292, Unknown=0, NotChecked=0, Total=27722 [2023-12-19 18:22:01,379 INFO L87 Difference]: Start difference. First operand 306 states and 456 transitions. Second operand has 167 states, 167 states have (on average 1.9940119760479043) internal successors, (333), 166 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:22:04,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:22:04,479 INFO L93 Difference]: Finished difference Result 5260 states and 7912 transitions. [2023-12-19 18:22:04,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2023-12-19 18:22:04,480 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 167 states have (on average 1.9940119760479043) internal successors, (333), 166 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-19 18:22:04,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:22:04,492 INFO L225 Difference]: With dead ends: 5260 [2023-12-19 18:22:04,492 INFO L226 Difference]: Without dead ends: 5256 [2023-12-19 18:22:04,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11933 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=12430, Invalid=15292, Unknown=0, NotChecked=0, Total=27722 [2023-12-19 18:22:04,495 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 18:22:04,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 20 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 18:22:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5256 states. [2023-12-19 18:22:04,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5256 to 226. [2023-12-19 18:22:04,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.4933333333333334) internal successors, (336), 225 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:22:04,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 336 transitions. [2023-12-19 18:22:04,878 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 336 transitions. Word has length 113 [2023-12-19 18:22:04,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:22:04,878 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 336 transitions. [2023-12-19 18:22:04,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 167 states have (on average 1.9940119760479043) internal successors, (333), 166 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:22:04,879 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 336 transitions. [2023-12-19 18:22:04,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 18:22:04,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:22:04,879 INFO L195 NwaCegarLoop]: trace histogram [70, 40, 30, 1, 1, 1, 1, 1] [2023-12-19 18:22:04,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 18:22:05,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:22:05,084 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:22:05,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:22:05,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1202445568, now seen corresponding path program 7 times [2023-12-19 18:22:05,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:22:05,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21819051] [2023-12-19 18:22:05,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:22:05,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:22:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:22:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:22:07,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:22:07,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21819051] [2023-12-19 18:22:07,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21819051] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:22:07,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752048182] [2023-12-19 18:22:07,419 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 18:22:07,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:22:07,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:22:07,420 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) [2023-12-19 18:22:07,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 18:22:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:22:07,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-19 18:22:07,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:22:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:22:09,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:22:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:22:14,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752048182] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:22:14,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:22:14,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72, 72] total 214 [2023-12-19 18:22:14,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812364003] [2023-12-19 18:22:14,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:22:14,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 215 states [2023-12-19 18:22:14,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:22:14,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2023-12-19 18:22:14,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20590, Invalid=25420, Unknown=0, NotChecked=0, Total=46010 [2023-12-19 18:22:14,615 INFO L87 Difference]: Start difference. First operand 226 states and 336 transitions. Second operand has 215 states, 215 states have (on average 1.9953488372093022) internal successors, (429), 214 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:22:25,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:22:25,620 INFO L93 Difference]: Finished difference Result 8261 states and 12421 transitions. [2023-12-19 18:22:25,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2023-12-19 18:22:25,621 INFO L78 Accepts]: Start accepts. Automaton has has 215 states, 215 states have (on average 1.9953488372093022) internal successors, (429), 214 states have internal predecessors, (429), 0 states have call successors, (0), 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 145 [2023-12-19 18:22:25,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:22:25,639 INFO L225 Difference]: With dead ends: 8261 [2023-12-19 18:22:25,639 INFO L226 Difference]: Without dead ends: 8257 [2023-12-19 18:22:25,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19949 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=20590, Invalid=25420, Unknown=0, NotChecked=0, Total=46010 [2023-12-19 18:22:25,644 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 18:22:25,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 16 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 18:22:25,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8257 states. [2023-12-19 18:22:27,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8257 to 566. [2023-12-19 18:22:27,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.497345132743363) internal successors, (846), 565 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:22:27,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 846 transitions. [2023-12-19 18:22:27,238 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 846 transitions. Word has length 145 [2023-12-19 18:22:27,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:22:27,238 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 846 transitions. [2023-12-19 18:22:27,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 215 states, 215 states have (on average 1.9953488372093022) internal successors, (429), 214 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:22:27,238 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 846 transitions. [2023-12-19 18:22:27,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-19 18:22:27,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:22:27,240 INFO L195 NwaCegarLoop]: trace histogram [82, 61, 21, 1, 1, 1, 1, 1] [2023-12-19 18:22:27,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 18:22:27,441 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,SelfDestructingSolverStorable11 [2023-12-19 18:22:27,441 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:22:27,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:22:27,441 INFO L85 PathProgramCache]: Analyzing trace with hash -509743726, now seen corresponding path program 8 times [2023-12-19 18:22:27,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:22:27,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753659150] [2023-12-19 18:22:27,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:22:27,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:22:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:22:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:22:30,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:22:30,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753659150] [2023-12-19 18:22:30,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753659150] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:22:30,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362657537] [2023-12-19 18:22:30,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 18:22:30,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:22:30,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:22:30,379 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) [2023-12-19 18:22:30,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 18:22:30,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 18:22:30,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:22:30,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 85 conjunts are in the unsatisfiable core [2023-12-19 18:22:30,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:22:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:22:33,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:22:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:22:39,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362657537] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:22:39,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:22:39,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84, 84] total 250 [2023-12-19 18:22:39,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98563567] [2023-12-19 18:22:39,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:22:39,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 251 states [2023-12-19 18:22:39,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:22:39,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2023-12-19 18:22:39,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28054, Invalid=34696, Unknown=0, NotChecked=0, Total=62750 [2023-12-19 18:22:39,758 INFO L87 Difference]: Start difference. First operand 566 states and 846 transitions. Second operand has 251 states, 251 states have (on average 1.99601593625498) internal successors, (501), 250 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:23:20,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:23:20,792 INFO L93 Difference]: Finished difference Result 17372 states and 26094 transitions. [2023-12-19 18:23:20,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2023-12-19 18:23:20,793 INFO L78 Accepts]: Start accepts. Automaton has has 251 states, 251 states have (on average 1.99601593625498) internal successors, (501), 250 states have internal predecessors, (501), 0 states have call successors, (0), 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 [2023-12-19 18:23:20,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:23:20,831 INFO L225 Difference]: With dead ends: 17372 [2023-12-19 18:23:20,832 INFO L226 Difference]: Without dead ends: 17368 [2023-12-19 18:23:20,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27305 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=28054, Invalid=34696, Unknown=0, NotChecked=0, Total=62750 [2023-12-19 18:23:20,841 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 18:23:20,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 18:23:20,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17368 states. [2023-12-19 18:23:23,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17368 to 338. [2023-12-19 18:23:23,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.4955489614243322) internal successors, (504), 337 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:23:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 504 transitions. [2023-12-19 18:23:23,425 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 504 transitions. Word has length 169 [2023-12-19 18:23:23,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:23:23,425 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 504 transitions. [2023-12-19 18:23:23,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 251 states, 251 states have (on average 1.99601593625498) internal successors, (501), 250 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:23:23,426 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 504 transitions. [2023-12-19 18:23:23,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-19 18:23:23,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:23:23,428 INFO L195 NwaCegarLoop]: trace histogram [138, 110, 28, 1, 1, 1, 1, 1] [2023-12-19 18:23:23,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 18:23:23,635 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,SelfDestructingSolverStorable12 [2023-12-19 18:23:23,635 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:23:23,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:23:23,636 INFO L85 PathProgramCache]: Analyzing trace with hash 792247404, now seen corresponding path program 9 times [2023-12-19 18:23:23,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:23:23,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047713659] [2023-12-19 18:23:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:23:23,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:23:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:23:31,779 INFO L134 CoverageAnalysis]: Checked inductivity of 19044 backedges. 0 proven. 19044 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:23:31,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:23:31,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047713659] [2023-12-19 18:23:31,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047713659] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:23:31,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102201718] [2023-12-19 18:23:31,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 18:23:31,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:23:31,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:23:31,780 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) [2023-12-19 18:23:31,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 18:23:32,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 139 check-sat command(s) [2023-12-19 18:23:32,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:23:32,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 141 conjunts are in the unsatisfiable core [2023-12-19 18:23:32,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:23:38,980 INFO L134 CoverageAnalysis]: Checked inductivity of 19044 backedges. 0 proven. 19044 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:23:38,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:23:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 19044 backedges. 0 proven. 19044 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:23:57,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102201718] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:23:57,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:23:57,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140, 140] total 418 [2023-12-19 18:23:57,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175955901] [2023-12-19 18:23:57,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:23:57,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 419 states [2023-12-19 18:23:57,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:23:57,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 419 interpolants. [2023-12-19 18:23:57,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78118, Invalid=97024, Unknown=0, NotChecked=0, Total=175142 [2023-12-19 18:23:57,085 INFO L87 Difference]: Start difference. First operand 338 states and 504 transitions. Second operand has 419 states, 419 states have (on average 1.9976133651551313) internal successors, (837), 418 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:26:22,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:26:22,493 INFO L93 Difference]: Finished difference Result 23774 states and 35725 transitions. [2023-12-19 18:26:22,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2023-12-19 18:26:22,494 INFO L78 Accepts]: Start accepts. Automaton has has 419 states, 419 states have (on average 1.9976133651551313) internal successors, (837), 418 states have internal predecessors, (837), 0 states have call successors, (0), 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 281 [2023-12-19 18:26:22,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:26:22,530 INFO L225 Difference]: With dead ends: 23774 [2023-12-19 18:26:22,530 INFO L226 Difference]: Without dead ends: 23770 [2023-12-19 18:26:22,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76865 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=78118, Invalid=97024, Unknown=0, NotChecked=0, Total=175142 [2023-12-19 18:26:22,546 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 18:26:22,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 18:26:22,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23770 states. [2023-12-19 18:26:32,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23770 to 562. [2023-12-19 18:26:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 1.4973262032085561) internal successors, (840), 561 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:26:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 840 transitions. [2023-12-19 18:26:32,218 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 840 transitions. Word has length 281 [2023-12-19 18:26:32,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:26:32,218 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 840 transitions. [2023-12-19 18:26:32,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 419 states, 419 states have (on average 1.9976133651551313) internal successors, (837), 418 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:26:32,219 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 840 transitions. [2023-12-19 18:26:32,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-19 18:26:32,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:26:32,221 INFO L195 NwaCegarLoop]: trace histogram [150, 128, 22, 1, 1, 1, 1, 1] [2023-12-19 18:26:32,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 18:26:32,427 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,SelfDestructingSolverStorable13 [2023-12-19 18:26:32,427 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:26:32,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:26:32,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1496493088, now seen corresponding path program 10 times [2023-12-19 18:26:32,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:26:32,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809356174] [2023-12-19 18:26:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:26:32,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:26:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:26:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 22500 backedges. 0 proven. 22500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:26:42,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:26:42,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809356174] [2023-12-19 18:26:42,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809356174] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:26:42,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289036063] [2023-12-19 18:26:42,057 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 18:26:42,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:26:42,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:26:42,058 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) [2023-12-19 18:26:42,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 18:26:42,214 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 18:26:42,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:26:42,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 153 conjunts are in the unsatisfiable core [2023-12-19 18:26:42,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:26:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 22500 backedges. 0 proven. 22500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:26:50,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:27:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 22500 backedges. 0 proven. 22500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:27:12,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289036063] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:27:12,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:27:12,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 152, 152] total 454 [2023-12-19 18:27:12,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391841898] [2023-12-19 18:27:12,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:27:12,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 455 states [2023-12-19 18:27:12,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:27:12,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 455 interpolants. [2023-12-19 18:27:12,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92110, Invalid=114460, Unknown=0, NotChecked=0, Total=206570 [2023-12-19 18:27:12,629 INFO L87 Difference]: Start difference. First operand 562 states and 840 transitions. Second operand has 455 states, 455 states have (on average 1.9978021978021978) internal successors, (909), 454 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:35:07,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:35:07,945 INFO L93 Difference]: Finished difference Result 38206 states and 57387 transitions. [2023-12-19 18:35:07,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 304 states. [2023-12-19 18:35:07,946 INFO L78 Accepts]: Start accepts. Automaton has has 455 states, 455 states have (on average 1.9978021978021978) internal successors, (909), 454 states have internal predecessors, (909), 0 states have call successors, (0), 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 305 [2023-12-19 18:35:07,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:35:07,997 INFO L225 Difference]: With dead ends: 38206 [2023-12-19 18:35:07,997 INFO L226 Difference]: Without dead ends: 38202 [2023-12-19 18:35:08,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 453 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90749 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=92110, Invalid=114460, Unknown=0, NotChecked=0, Total=206570 [2023-12-19 18:35:08,017 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:35:08,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 18:35:08,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38202 states. [2023-12-19 18:35:28,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38202 to 610. [2023-12-19 18:35:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 1.4975369458128078) internal successors, (912), 609 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:35:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 912 transitions. [2023-12-19 18:35:28,201 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 912 transitions. Word has length 305 [2023-12-19 18:35:28,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:35:28,201 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 912 transitions. [2023-12-19 18:35:28,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 455 states, 455 states have (on average 1.9978021978021978) internal successors, (909), 454 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:35:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 912 transitions. [2023-12-19 18:35:28,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-19 18:35:28,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:35:28,208 INFO L195 NwaCegarLoop]: trace histogram [258, 214, 44, 1, 1, 1, 1, 1] [2023-12-19 18:35:28,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 18:35:28,414 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,SelfDestructingSolverStorable14 [2023-12-19 18:35:28,414 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:35:28,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:35:28,415 INFO L85 PathProgramCache]: Analyzing trace with hash -624407132, now seen corresponding path program 11 times [2023-12-19 18:35:28,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:35:28,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777836336] [2023-12-19 18:35:28,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:35:28,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:35:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:35:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 66564 backedges. 0 proven. 66564 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:35:58,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:35:58,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777836336] [2023-12-19 18:35:58,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777836336] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:35:58,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98494778] [2023-12-19 18:35:58,771 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 18:35:58,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:35:58,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:35:58,772 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) [2023-12-19 18:35:58,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 18:35:59,407 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 259 check-sat command(s) [2023-12-19 18:35:59,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:35:59,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 261 conjunts are in the unsatisfiable core [2023-12-19 18:35:59,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-19 18:36:03,269 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 18:36:03,279 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 18:36:03,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 18:36:03,304 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 18:36:03,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:36:03,470 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 522 with TraceHistMax 258,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-19 18:36:03,474 INFO L445 BasicCegarLoop]: Path program histogram: [11, 2, 1, 1, 1] [2023-12-19 18:36:03,475 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 18:36:03,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 06:36:03 BoogieIcfgContainer [2023-12-19 18:36:03,477 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 18:36:03,477 INFO L158 Benchmark]: Toolchain (without parser) took 861002.37ms. Allocated memory was 198.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 164.4MB in the beginning and 363.2MB in the end (delta: -198.8MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-19 18:36:03,477 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 198.2MB. Free memory is still 155.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 18:36:03,477 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.63ms. Allocated memory is still 198.2MB. Free memory was 163.9MB in the beginning and 153.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 18:36:03,478 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.26ms. Allocated memory is still 198.2MB. Free memory was 153.4MB in the beginning and 151.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 18:36:03,478 INFO L158 Benchmark]: Boogie Preprocessor took 31.03ms. Allocated memory is still 198.2MB. Free memory was 151.8MB in the beginning and 150.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 18:36:03,478 INFO L158 Benchmark]: RCFGBuilder took 210.89ms. Allocated memory is still 198.2MB. Free memory was 150.2MB in the beginning and 139.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 18:36:03,478 INFO L158 Benchmark]: TraceAbstraction took 860567.32ms. Allocated memory was 198.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 138.7MB in the beginning and 363.2MB in the end (delta: -224.5MB). Peak memory consumption was 978.7MB. Max. memory is 8.0GB. [2023-12-19 18:36:03,479 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 198.2MB. Free memory is still 155.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 167.63ms. Allocated memory is still 198.2MB. Free memory was 163.9MB in the beginning and 153.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.26ms. Allocated memory is still 198.2MB. Free memory was 153.4MB in the beginning and 151.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.03ms. Allocated memory is still 198.2MB. Free memory was 151.8MB in the beginning and 150.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 210.89ms. Allocated memory is still 198.2MB. Free memory was 150.2MB in the beginning and 139.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 860567.32ms. Allocated memory was 198.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 138.7MB in the beginning and 363.2MB in the end (delta: -224.5MB). Peak memory consumption was 978.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 14]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 14). Cancelled while NwaCegarLoop was analyzing trace of length 522 with TraceHistMax 258,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 860.5s, OverallIterations: 16, TraceHistogramMax: 258, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 678.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 240 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 176 mSDsCounter, 1785 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4697 IncrementalHoareTripleChecker+Invalid, 6482 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1785 mSolverCounterUnsat, 64 mSDtfsCounter, 4697 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3180 GetRequests, 1313 SyntacticMatches, 0 SemanticMatches, 1867 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238652 ImplicationChecksByTransitivity, 96.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=610occurred in iteration=15, InterpolantAutomatonStates: 1275, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 34.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 94433 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 108.4s InterpolantComputationTime, 2576 NumberOfCodeBlocks, 2576 NumberOfCodeBlocksAsserted, 279 NumberOfCheckSat, 3818 ConstructedInterpolants, 0 QuantifiedInterpolants, 21084 SizeOfPredicates, 26 NumberOfNonLiveVariables, 4408 ConjunctsInSsa, 648 ConjunctsInUnsatCore, 41 InterpolantComputations, 2 PerfectInterpolantSequences, 0/176715 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown