/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/loop-new/count_by_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 18:02:53,354 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 18:02:53,423 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 18:02:53,427 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 18:02:53,427 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 18:02:53,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 18:02:53,450 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 18:02:53,450 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 18:02:53,451 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 18:02:53,454 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 18:02:53,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 18:02:53,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 18:02:53,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 18:02:53,456 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 18:02:53,456 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 18:02:53,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 18:02:53,456 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 18:02:53,456 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 18:02:53,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 18:02:53,457 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 18:02:53,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 18:02:53,458 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 18:02:53,458 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 18:02:53,458 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 18:02:53,458 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 18:02:53,458 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 18:02:53,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 18:02:53,459 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 18:02:53,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 18:02:53,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 18:02:53,460 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 18:02:53,460 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 18:02:53,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 18:02:53,460 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 18:02:53,460 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 18:02:53,461 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 18:02:53,461 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 18:02:53,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 18:02:53,461 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 18:02:53,461 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 18:02:53,461 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 18:02:53,461 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 18:02:53,461 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 18:02:53,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 18:02:53,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 18:02:53,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 18:02:53,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 18:02:53,659 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 18:02:53,662 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 18:02:53,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_2.i [2023-12-19 18:02:54,685 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 18:02:54,800 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 18:02:54,801 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_2.i [2023-12-19 18:02:54,805 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ee19ea42/a3be2ff123ea4517a85131b3f34b7911/FLAG2e66d7311 [2023-12-19 18:02:54,815 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ee19ea42/a3be2ff123ea4517a85131b3f34b7911 [2023-12-19 18:02:54,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 18:02:54,817 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 18:02:54,818 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 18:02:54,818 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 18:02:54,821 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 18:02:54,822 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:02:54" (1/1) ... [2023-12-19 18:02:54,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1707340c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:54, skipping insertion in model container [2023-12-19 18:02:54,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:02:54" (1/1) ... [2023-12-19 18:02:54,836 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 18:02:54,950 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_2.i[891,904] [2023-12-19 18:02:54,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 18:02:54,970 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 18:02:54,979 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_2.i[891,904] [2023-12-19 18:02:54,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 18:02:54,991 INFO L206 MainTranslator]: Completed translation [2023-12-19 18:02:54,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:54 WrapperNode [2023-12-19 18:02:54,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 18:02:54,993 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 18:02:54,993 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 18:02:54,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 18:02:54,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:54" (1/1) ... [2023-12-19 18:02:55,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:54" (1/1) ... [2023-12-19 18:02:55,015 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2023-12-19 18:02:55,016 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 18:02:55,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 18:02:55,017 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 18:02:55,017 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 18:02:55,023 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:54" (1/1) ... [2023-12-19 18:02:55,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:54" (1/1) ... [2023-12-19 18:02:55,024 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:54" (1/1) ... [2023-12-19 18:02:55,030 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 18:02:55,031 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:54" (1/1) ... [2023-12-19 18:02:55,031 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:54" (1/1) ... [2023-12-19 18:02:55,033 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:54" (1/1) ... [2023-12-19 18:02:55,035 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:54" (1/1) ... [2023-12-19 18:02:55,040 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:54" (1/1) ... [2023-12-19 18:02:55,041 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:54" (1/1) ... [2023-12-19 18:02:55,046 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 18:02:55,046 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 18:02:55,047 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 18:02:55,047 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 18:02:55,048 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:54" (1/1) ... [2023-12-19 18:02:55,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 18:02:55,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:02:55,077 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 18:02:55,082 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 18:02:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 18:02:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 18:02:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 18:02:55,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 18:02:55,144 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 18:02:55,145 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 18:02:55,226 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 18:02:55,239 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 18:02:55,239 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 18:02:55,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:02:55 BoogieIcfgContainer [2023-12-19 18:02:55,239 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 18:02:55,241 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 18:02:55,241 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 18:02:55,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 18:02:55,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:02:54" (1/3) ... [2023-12-19 18:02:55,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313f0b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:02:55, skipping insertion in model container [2023-12-19 18:02:55,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:02:54" (2/3) ... [2023-12-19 18:02:55,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313f0b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:02:55, skipping insertion in model container [2023-12-19 18:02:55,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:02:55" (3/3) ... [2023-12-19 18:02:55,252 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_2.i [2023-12-19 18:02:55,263 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 18:02:55,263 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 18:02:55,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 18:02:55,298 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;@6f7920bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 18:02:55,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 18:02:55,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 18:02:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-19 18:02:55,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:55,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-19 18:02:55,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:55,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:55,310 INFO L85 PathProgramCache]: Analyzing trace with hash 58436137, now seen corresponding path program 1 times [2023-12-19 18:02:55,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:55,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100561632] [2023-12-19 18:02:55,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:55,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:55,445 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 18:02:55,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:55,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100561632] [2023-12-19 18:02:55,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100561632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:02:55,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:02:55,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 18:02:55,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001791976] [2023-12-19 18:02:55,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:02:55,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 18:02:55,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:55,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 18:02:55,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 18:02:55,485 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 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 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 18:02:55,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:55,501 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2023-12-19 18:02:55,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 18:02:55,502 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 18:02:55,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:55,506 INFO L225 Difference]: With dead ends: 15 [2023-12-19 18:02:55,506 INFO L226 Difference]: Without dead ends: 7 [2023-12-19 18:02:55,508 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 18:02:55,510 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:55,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:02:55,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-12-19 18:02:55,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-12-19 18:02:55,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states 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 18:02:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-12-19 18:02:55,532 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2023-12-19 18:02:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:55,533 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-12-19 18:02:55,533 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 18:02:55,533 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-12-19 18:02:55,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-19 18:02:55,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:55,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-19 18:02:55,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 18:02:55,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:55,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:55,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1835290541, now seen corresponding path program 1 times [2023-12-19 18:02:55,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:55,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848890003] [2023-12-19 18:02:55,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:55,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:55,611 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 18:02:55,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:55,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848890003] [2023-12-19 18:02:55,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848890003] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:02:55,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438410829] [2023-12-19 18:02:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:55,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:55,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:02:55,614 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 18:02:55,631 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 18:02:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:55,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 18:02:55,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:02:55,672 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 18:02:55,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:02:55,689 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 18:02:55,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438410829] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:02:55,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:02:55,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-19 18:02:55,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457941475] [2023-12-19 18:02:55,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:02:55,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 18:02:55,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:55,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 18:02:55,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-19 18:02:55,691 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 18:02:55,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:55,703 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2023-12-19 18:02:55,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 18:02:55,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 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 6 [2023-12-19 18:02:55,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:55,703 INFO L225 Difference]: With dead ends: 14 [2023-12-19 18:02:55,703 INFO L226 Difference]: Without dead ends: 10 [2023-12-19 18:02:55,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-19 18:02:55,704 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:55,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:02:55,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-12-19 18:02:55,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-12-19 18:02:55,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 18:02:55,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2023-12-19 18:02:55,707 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2023-12-19 18:02:55,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:55,707 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2023-12-19 18:02:55,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 18:02:55,708 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2023-12-19 18:02:55,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-19 18:02:55,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:55,708 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2023-12-19 18:02:55,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 18:02:55,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:55,912 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:55,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:55,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1959072983, now seen corresponding path program 2 times [2023-12-19 18:02:55,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:55,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115539266] [2023-12-19 18:02:55,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:55,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:56,030 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:56,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:56,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115539266] [2023-12-19 18:02:56,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115539266] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:02:56,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826639933] [2023-12-19 18:02:56,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 18:02:56,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:56,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:02:56,035 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 18:02:56,077 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 18:02:56,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 18:02:56,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:02:56,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 18:02:56,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:02:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:56,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:02:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:56,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826639933] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:02:56,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:02:56,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-12-19 18:02:56,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483635972] [2023-12-19 18:02:56,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:02:56,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 18:02:56,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:56,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 18:02:56,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-19 18:02:56,233 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:02:56,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:56,257 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2023-12-19 18:02:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 18:02:56,257 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-19 18:02:56,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:56,257 INFO L225 Difference]: With dead ends: 20 [2023-12-19 18:02:56,258 INFO L226 Difference]: Without dead ends: 16 [2023-12-19 18:02:56,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-19 18:02:56,259 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:56,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:02:56,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-19 18:02:56,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-19 18:02:56,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 18:02:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-12-19 18:02:56,262 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2023-12-19 18:02:56,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:56,262 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-12-19 18:02:56,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:02:56,262 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-12-19 18:02:56,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-19 18:02:56,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:56,263 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1] [2023-12-19 18:02:56,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 18:02:56,468 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,SelfDestructingSolverStorable2 [2023-12-19 18:02:56,468 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:56,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:56,469 INFO L85 PathProgramCache]: Analyzing trace with hash -955392855, now seen corresponding path program 3 times [2023-12-19 18:02:56,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:56,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733556679] [2023-12-19 18:02:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:56,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:56,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:56,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733556679] [2023-12-19 18:02:56,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733556679] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:02:56,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570425587] [2023-12-19 18:02:56,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 18:02:56,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:56,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:02:56,641 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 18:02:56,659 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 18:02:56,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-19 18:02:56,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:02:56,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 18:02:56,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:02:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:56,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:02:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:56,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570425587] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:02:56,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:02:56,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-12-19 18:02:56,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252172477] [2023-12-19 18:02:56,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:02:56,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 18:02:56,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:56,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 18:02:56,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-19 18:02:56,863 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 25 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 18:02:56,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:56,885 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2023-12-19 18:02:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 18:02:56,886 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 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 15 [2023-12-19 18:02:56,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:56,886 INFO L225 Difference]: With dead ends: 32 [2023-12-19 18:02:56,886 INFO L226 Difference]: Without dead ends: 28 [2023-12-19 18:02:56,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-19 18:02:56,887 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:56,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:02:56,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-19 18:02:56,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-19 18:02:56,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 18:02:56,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2023-12-19 18:02:56,892 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 15 [2023-12-19 18:02:56,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:56,892 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2023-12-19 18:02:56,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 18:02:56,892 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2023-12-19 18:02:56,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-19 18:02:56,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:56,893 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1] [2023-12-19 18:02:56,900 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 18:02:57,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:57,098 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:57,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:57,098 INFO L85 PathProgramCache]: Analyzing trace with hash 968515497, now seen corresponding path program 4 times [2023-12-19 18:02:57,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:57,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935878900] [2023-12-19 18:02:57,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:57,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:57,524 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:57,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:57,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935878900] [2023-12-19 18:02:57,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935878900] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:02:57,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695282429] [2023-12-19 18:02:57,525 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 18:02:57,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:57,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:02:57,531 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 18:02:57,534 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 18:02:57,580 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 18:02:57,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:02:57,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-19 18:02:57,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:02:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:57,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:02:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:58,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695282429] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:02:58,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:02:58,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-12-19 18:02:58,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097931299] [2023-12-19 18:02:58,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:02:58,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-19 18:02:58,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:58,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-19 18:02:58,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-12-19 18:02:58,238 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 49 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:02:58,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:58,294 INFO L93 Difference]: Finished difference Result 56 states and 79 transitions. [2023-12-19 18:02:58,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-19 18:02:58,296 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-19 18:02:58,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:58,297 INFO L225 Difference]: With dead ends: 56 [2023-12-19 18:02:58,297 INFO L226 Difference]: Without dead ends: 52 [2023-12-19 18:02:58,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-12-19 18:02:58,298 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:58,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:02:58,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-19 18:02:58,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-12-19 18:02:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:02:58,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2023-12-19 18:02:58,303 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 27 [2023-12-19 18:02:58,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:58,303 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2023-12-19 18:02:58,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:02:58,303 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2023-12-19 18:02:58,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-19 18:02:58,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:58,304 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1] [2023-12-19 18:02:58,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 18:02:58,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:58,509 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:58,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:58,510 INFO L85 PathProgramCache]: Analyzing trace with hash -53615191, now seen corresponding path program 5 times [2023-12-19 18:02:58,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:58,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170280415] [2023-12-19 18:02:58,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:58,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:59,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:59,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170280415] [2023-12-19 18:02:59,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170280415] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:02:59,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877530611] [2023-12-19 18:02:59,505 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 18:02:59,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:59,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:02:59,522 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 18:02:59,565 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 18:02:59,584 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-19 18:02:59,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:02:59,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-19 18:02:59,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:02:59,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:59,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:03:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:03:01,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877530611] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:03:01,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:03:01,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 96 [2023-12-19 18:03:01,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100094615] [2023-12-19 18:03:01,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:03:01,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-12-19 18:03:01,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:03:01,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-12-19 18:03:01,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-12-19 18:03:01,723 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 97 states, 97 states have (on average 1.041237113402062) internal successors, (101), 96 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 18:03:01,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:03:01,858 INFO L93 Difference]: Finished difference Result 104 states and 151 transitions. [2023-12-19 18:03:01,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-19 18:03:01,858 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.041237113402062) internal successors, (101), 96 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-19 18:03:01,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:03:01,862 INFO L225 Difference]: With dead ends: 104 [2023-12-19 18:03:01,862 INFO L226 Difference]: Without dead ends: 100 [2023-12-19 18:03:01,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-12-19 18:03:01,866 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:03:01,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 18:03:01,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-19 18:03:01,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-12-19 18:03:01,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0101010101010102) internal successors, (100), 99 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:01,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2023-12-19 18:03:01,882 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 51 [2023-12-19 18:03:01,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:03:01,883 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2023-12-19 18:03:01,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.041237113402062) internal successors, (101), 96 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 18:03:01,883 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2023-12-19 18:03:01,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 18:03:01,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:03:01,886 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1] [2023-12-19 18:03:01,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 18:03:02,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:03:02,092 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:03:02,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:03:02,092 INFO L85 PathProgramCache]: Analyzing trace with hash -153161303, now seen corresponding path program 6 times [2023-12-19 18:03:02,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:03:02,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561452084] [2023-12-19 18:03:02,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:03:02,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:03:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:03:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:03:05,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:03:05,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561452084] [2023-12-19 18:03:05,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561452084] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:03:05,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237966586] [2023-12-19 18:03:05,201 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 18:03:05,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:03:05,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:03:05,216 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 18:03:05,218 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 18:03:05,312 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2023-12-19 18:03:05,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:03:05,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-19 18:03:05,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:03:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:03:05,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:03:12,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:03:12,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237966586] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:03:12,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:03:12,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 192 [2023-12-19 18:03:12,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231798446] [2023-12-19 18:03:12,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:03:12,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2023-12-19 18:03:12,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:03:12,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2023-12-19 18:03:12,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2023-12-19 18:03:12,124 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand has 193 states, 193 states have (on average 1.0207253886010363) internal successors, (197), 192 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:12,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:03:12,434 INFO L93 Difference]: Finished difference Result 200 states and 295 transitions. [2023-12-19 18:03:12,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-19 18:03:12,435 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 1.0207253886010363) internal successors, (197), 192 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-19 18:03:12,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:03:12,438 INFO L225 Difference]: With dead ends: 200 [2023-12-19 18:03:12,438 INFO L226 Difference]: Without dead ends: 196 [2023-12-19 18:03:12,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2023-12-19 18:03:12,442 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 18:03:12,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 18:03:12,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-19 18:03:12,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-12-19 18:03:12,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.005128205128205) internal successors, (196), 195 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 18:03:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2023-12-19 18:03:12,460 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 99 [2023-12-19 18:03:12,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:03:12,460 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2023-12-19 18:03:12,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 1.0207253886010363) internal successors, (197), 192 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:12,460 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2023-12-19 18:03:12,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-19 18:03:12,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:03:12,462 INFO L195 NwaCegarLoop]: trace histogram [190, 1, 1, 1, 1, 1] [2023-12-19 18:03:12,484 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 18:03:12,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:03:12,670 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:03:12,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:03:12,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1565980247, now seen corresponding path program 7 times [2023-12-19 18:03:12,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:03:12,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781735748] [2023-12-19 18:03:12,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:03:12,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:03:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:03:23,524 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:03:23,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:03:23,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781735748] [2023-12-19 18:03:23,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781735748] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:03:23,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420303341] [2023-12-19 18:03:23,525 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 18:03:23,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:03:23,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:03:23,526 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 18:03:23,526 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 18:03:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:03:23,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-19 18:03:23,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:03:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:03:23,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:03:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:03:52,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420303341] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:03:52,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:03:52,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 384 [2023-12-19 18:03:52,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121125356] [2023-12-19 18:03:52,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:03:52,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2023-12-19 18:03:52,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:03:52,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2023-12-19 18:03:52,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2023-12-19 18:03:52,287 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand has 385 states, 385 states have (on average 1.0103896103896104) internal successors, (389), 384 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:53,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:03:53,806 INFO L93 Difference]: Finished difference Result 392 states and 583 transitions. [2023-12-19 18:03:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2023-12-19 18:03:53,807 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 385 states have (on average 1.0103896103896104) internal successors, (389), 384 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2023-12-19 18:03:53,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:03:53,809 INFO L225 Difference]: With dead ends: 392 [2023-12-19 18:03:53,809 INFO L226 Difference]: Without dead ends: 388 [2023-12-19 18:03:53,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2023-12-19 18:03:53,814 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:03:53,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 18:03:53,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-12-19 18:03:53,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2023-12-19 18:03:53,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 1.0025839793281655) internal successors, (388), 387 states have internal predecessors, (388), 0 states have call successors, (0), 0 states 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 18:03:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 388 transitions. [2023-12-19 18:03:53,826 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 388 transitions. Word has length 195 [2023-12-19 18:03:53,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:03:53,827 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 388 transitions. [2023-12-19 18:03:53,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 385 states have (on average 1.0103896103896104) internal successors, (389), 384 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 388 transitions. [2023-12-19 18:03:53,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-12-19 18:03:53,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:03:53,839 INFO L195 NwaCegarLoop]: trace histogram [382, 1, 1, 1, 1, 1] [2023-12-19 18:03:53,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 18:03:54,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:03:54,053 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:03:54,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:03:54,054 INFO L85 PathProgramCache]: Analyzing trace with hash 417151401, now seen corresponding path program 8 times [2023-12-19 18:03:54,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:03:54,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205598736] [2023-12-19 18:03:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:03:54,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:03:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:04:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 73153 backedges. 0 proven. 73153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:04:41,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:04:41,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205598736] [2023-12-19 18:04:41,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205598736] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:04:41,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331434464] [2023-12-19 18:04:41,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 18:04:41,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:04:41,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:04:41,261 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 18:04:41,264 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 18:04:41,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 18:04:41,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:04:41,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 384 conjunts are in the unsatisfiable core [2023-12-19 18:04:41,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:04:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 73153 backedges. 0 proven. 73153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:04:41,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:06:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 73153 backedges. 0 proven. 73153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:06:17,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331434464] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:06:17,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:06:17,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 768 [2023-12-19 18:06:17,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765952279] [2023-12-19 18:06:17,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:06:17,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 769 states [2023-12-19 18:06:17,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:06:17,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 769 interpolants. [2023-12-19 18:06:17,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295296, Invalid=295296, Unknown=0, NotChecked=0, Total=590592 [2023-12-19 18:06:17,837 INFO L87 Difference]: Start difference. First operand 388 states and 388 transitions. Second operand has 769 states, 769 states have (on average 1.0052015604681404) internal successors, (773), 768 states have internal predecessors, (773), 0 states have call successors, (0), 0 states 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 18:06:30,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:06:30,880 INFO L93 Difference]: Finished difference Result 776 states and 1159 transitions. [2023-12-19 18:06:30,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2023-12-19 18:06:30,881 INFO L78 Accepts]: Start accepts. Automaton has has 769 states, 769 states have (on average 1.0052015604681404) internal successors, (773), 768 states have internal predecessors, (773), 0 states have call successors, (0), 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 387 [2023-12-19 18:06:30,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:06:30,884 INFO L225 Difference]: With dead ends: 776 [2023-12-19 18:06:30,884 INFO L226 Difference]: Without dead ends: 772 [2023-12-19 18:06:30,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 767 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 127.6s TimeCoverageRelationStatistics Valid=295296, Invalid=295296, Unknown=0, NotChecked=0, Total=590592 [2023-12-19 18:06:30,904 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 18:06:30,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 18:06:30,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2023-12-19 18:06:30,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 772. [2023-12-19 18:06:30,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 1.0012970168612192) internal successors, (772), 771 states have internal predecessors, (772), 0 states have call successors, (0), 0 states 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 18:06:30,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 772 transitions. [2023-12-19 18:06:30,924 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 772 transitions. Word has length 387 [2023-12-19 18:06:30,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:06:30,925 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 772 transitions. [2023-12-19 18:06:30,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 769 states, 769 states have (on average 1.0052015604681404) internal successors, (773), 768 states have internal predecessors, (773), 0 states have call successors, (0), 0 states 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 18:06:30,926 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 772 transitions. [2023-12-19 18:06:30,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2023-12-19 18:06:30,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:06:30,937 INFO L195 NwaCegarLoop]: trace histogram [766, 1, 1, 1, 1, 1] [2023-12-19 18:06:30,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 18:06:31,143 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,SelfDestructingSolverStorable8 [2023-12-19 18:06:31,144 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:06:31,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:06:31,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2143656361, now seen corresponding path program 9 times [2023-12-19 18:06:31,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:06:31,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507659066] [2023-12-19 18:06:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:06:31,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:06:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:10:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 293761 backedges. 0 proven. 293761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:10:31,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:10:31,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507659066] [2023-12-19 18:10:31,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507659066] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:10:31,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948608694] [2023-12-19 18:10:31,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 18:10:31,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:10:31,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:10:31,640 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 18:10:31,641 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 18:10:34,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 384 check-sat command(s) [2023-12-19 18:10:34,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:10:34,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 768 conjunts are in the unsatisfiable core [2023-12-19 18:10:34,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:10:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 293761 backedges. 0 proven. 293761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:10:34,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-19 18:17:14,766 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 18:17:14,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 18:17:14,785 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 18:17:14,790 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 18:17:14,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 18:17:14,975 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 772 with TraceHistMax 766,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 1510 known predicates. [2023-12-19 18:17:14,979 INFO L445 BasicCegarLoop]: Path program histogram: [9, 1] [2023-12-19 18:17:14,980 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 18:17:14,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 06:17:14 BoogieIcfgContainer [2023-12-19 18:17:14,982 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 18:17:14,982 INFO L158 Benchmark]: Toolchain (without parser) took 860164.88ms. Allocated memory was 289.4MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 245.4MB in the beginning and 941.0MB in the end (delta: -695.6MB). Peak memory consumption was 515.3MB. Max. memory is 8.0GB. [2023-12-19 18:17:14,982 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 241.2MB. Free memory is still 190.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 18:17:14,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.94ms. Allocated memory is still 289.4MB. Free memory was 245.1MB in the beginning and 234.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 18:17:14,982 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.87ms. Allocated memory is still 289.4MB. Free memory was 234.6MB in the beginning and 233.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 18:17:14,983 INFO L158 Benchmark]: Boogie Preprocessor took 29.30ms. Allocated memory is still 289.4MB. Free memory was 233.2MB in the beginning and 231.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 18:17:14,983 INFO L158 Benchmark]: RCFGBuilder took 192.97ms. Allocated memory is still 289.4MB. Free memory was 231.4MB in the beginning and 222.3MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-19 18:17:14,983 INFO L158 Benchmark]: TraceAbstraction took 859740.52ms. Allocated memory was 289.4MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 221.7MB in the beginning and 941.0MB in the end (delta: -719.3MB). Peak memory consumption was 492.3MB. Max. memory is 8.0GB. [2023-12-19 18:17:14,984 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 241.2MB. Free memory is still 190.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 173.94ms. Allocated memory is still 289.4MB. Free memory was 245.1MB in the beginning and 234.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.87ms. Allocated memory is still 289.4MB. Free memory was 234.6MB in the beginning and 233.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.30ms. Allocated memory is still 289.4MB. Free memory was 233.2MB in the beginning and 231.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 192.97ms. Allocated memory is still 289.4MB. Free memory was 231.4MB in the beginning and 222.3MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 859740.52ms. Allocated memory was 289.4MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 221.7MB in the beginning and 941.0MB in the end (delta: -719.3MB). Peak memory consumption was 492.3MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 772 with TraceHistMax 766,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 1510 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 859.7s, OverallIterations: 10, TraceHistogramMax: 766, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 15.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 118 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 81 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1618 IncrementalHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 37 mSDtfsCounter, 1618 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2330 GetRequests, 807 SyntacticMatches, 0 SemanticMatches, 1523 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2996 ImplicationChecksByTransitivity, 175.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=772occurred in iteration=9, InterpolantAutomatonStates: 1533, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 197.2s InterpolantComputationTime, 1583 NumberOfCodeBlocks, 1583 NumberOfCodeBlocksAsserted, 95 NumberOfCheckSat, 2347 ConstructedInterpolants, 0 QuantifiedInterpolants, 6891 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2463 ConjunctsInSsa, 765 ConjunctsInUnsatCore, 25 InterpolantComputations, 1 PerfectInterpolantSequences, 0/291489 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