/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loops-crafted-1/nested3-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 05:10:03,845 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 05:10:03,915 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 05:10:03,919 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 05:10:03,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 05:10:03,941 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 05:10:03,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 05:10:03,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 05:10:03,942 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 05:10:03,944 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 05:10:03,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 05:10:03,945 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 05:10:03,945 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 05:10:03,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 05:10:03,946 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 05:10:03,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 05:10:03,946 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 05:10:03,947 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 05:10:03,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 05:10:03,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 05:10:03,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 05:10:03,948 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 05:10:03,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 05:10:03,948 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 05:10:03,948 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 05:10:03,949 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 05:10:03,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 05:10:03,949 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 05:10:03,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 05:10:03,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 05:10:03,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 05:10:03,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 05:10:03,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 05:10:03,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 05:10:03,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 05:10:03,951 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 05:10:03,951 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 05:10:03,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 05:10:03,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 05:10:03,951 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 05:10:03,951 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 05:10:03,952 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 05:10:03,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 05:10:03,952 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 05:10:04,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 05:10:04,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 05:10:04,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 05:10:04,152 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 05:10:04,152 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 05:10:04,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested3-2.c [2023-12-21 05:10:05,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 05:10:05,223 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 05:10:05,223 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested3-2.c [2023-12-21 05:10:05,234 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d454669d/001db4bbfa92454dae470534a0f585e8/FLAG11a70f98f [2023-12-21 05:10:05,248 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d454669d/001db4bbfa92454dae470534a0f585e8 [2023-12-21 05:10:05,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 05:10:05,250 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 05:10:05,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 05:10:05,253 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 05:10:05,256 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 05:10:05,256 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:10:05" (1/1) ... [2023-12-21 05:10:05,258 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ecd7b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:10:05, skipping insertion in model container [2023-12-21 05:10:05,258 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:10:05" (1/1) ... [2023-12-21 05:10:05,272 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 05:10:05,367 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested3-2.c[321,334] [2023-12-21 05:10:05,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 05:10:05,381 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 05:10:05,388 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested3-2.c[321,334] [2023-12-21 05:10:05,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 05:10:05,402 INFO L206 MainTranslator]: Completed translation [2023-12-21 05:10:05,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:10:05 WrapperNode [2023-12-21 05:10:05,403 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 05:10:05,404 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 05:10:05,404 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 05:10:05,404 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 05:10:05,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:10:05" (1/1) ... [2023-12-21 05:10:05,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:10:05" (1/1) ... [2023-12-21 05:10:05,423 INFO L138 Inliner]: procedures = 12, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2023-12-21 05:10:05,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 05:10:05,424 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 05:10:05,424 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 05:10:05,424 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 05:10:05,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:10:05" (1/1) ... [2023-12-21 05:10:05,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:10:05" (1/1) ... [2023-12-21 05:10:05,431 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:10:05" (1/1) ... [2023-12-21 05:10:05,437 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]. [2023-12-21 05:10:05,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:10:05" (1/1) ... [2023-12-21 05:10:05,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:10:05" (1/1) ... [2023-12-21 05:10:05,442 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:10:05" (1/1) ... [2023-12-21 05:10:05,444 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:10:05" (1/1) ... [2023-12-21 05:10:05,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:10:05" (1/1) ... [2023-12-21 05:10:05,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:10:05" (1/1) ... [2023-12-21 05:10:05,446 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 05:10:05,447 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 05:10:05,447 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 05:10:05,447 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 05:10:05,447 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:10:05" (1/1) ... [2023-12-21 05:10:05,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 05:10:05,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:10:05,479 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) [2023-12-21 05:10:05,485 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 [2023-12-21 05:10:05,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 05:10:05,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 05:10:05,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 05:10:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 05:10:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 05:10:05,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 05:10:05,546 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 05:10:05,547 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 05:10:05,693 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 05:10:05,707 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 05:10:05,707 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-21 05:10:05,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:10:05 BoogieIcfgContainer [2023-12-21 05:10:05,708 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 05:10:05,709 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 05:10:05,709 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 05:10:05,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 05:10:05,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:10:05" (1/3) ... [2023-12-21 05:10:05,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cd12ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:10:05, skipping insertion in model container [2023-12-21 05:10:05,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:10:05" (2/3) ... [2023-12-21 05:10:05,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cd12ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:10:05, skipping insertion in model container [2023-12-21 05:10:05,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:10:05" (3/3) ... [2023-12-21 05:10:05,713 INFO L112 eAbstractionObserver]: Analyzing ICFG nested3-2.c [2023-12-21 05:10:05,725 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 05:10:05,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 05:10:05,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 05:10:05,757 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;@634e5c7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 05:10:05,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 05:10:05,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 05:10:05,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-21 05:10:05,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:10:05,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-21 05:10:05,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:10:05,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:10:05,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1507703365, now seen corresponding path program 1 times [2023-12-21 05:10:05,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:10:05,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731028017] [2023-12-21 05:10:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:10:05,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:10:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:10:05,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:05,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:10:05,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731028017] [2023-12-21 05:10:05,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731028017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:10:05,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:10:05,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 05:10:05,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701483705] [2023-12-21 05:10:05,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:10:05,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 05:10:05,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:10:05,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 05:10:05,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 05:10:05,926 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:10:05,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:10:05,951 INFO L93 Difference]: Finished difference Result 40 states and 69 transitions. [2023-12-21 05:10:05,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 05:10:05,954 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-21 05:10:05,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:10:05,958 INFO L225 Difference]: With dead ends: 40 [2023-12-21 05:10:05,959 INFO L226 Difference]: Without dead ends: 22 [2023-12-21 05:10:05,960 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 [2023-12-21 05:10:05,963 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:10:05,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 33 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:10:05,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-21 05:10:05,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 16. [2023-12-21 05:10:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 05:10:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-12-21 05:10:05,990 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 6 [2023-12-21 05:10:05,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:10:05,990 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-12-21 05:10:05,990 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:10:05,990 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-21 05:10:05,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-21 05:10:05,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:10:05,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:10:05,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 05:10:05,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:10:05,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:10:05,992 INFO L85 PathProgramCache]: Analyzing trace with hash 521920189, now seen corresponding path program 1 times [2023-12-21 05:10:05,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:10:05,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196894248] [2023-12-21 05:10:05,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:10:05,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:10:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:10:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:06,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:10:06,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196894248] [2023-12-21 05:10:06,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196894248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:10:06,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:10:06,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 05:10:06,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680739221] [2023-12-21 05:10:06,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:10:06,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 05:10:06,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:10:06,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 05:10:06,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 05:10:06,064 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:10:06,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:10:06,092 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2023-12-21 05:10:06,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 05:10:06,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-21 05:10:06,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:10:06,093 INFO L225 Difference]: With dead ends: 34 [2023-12-21 05:10:06,093 INFO L226 Difference]: Without dead ends: 20 [2023-12-21 05:10:06,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 05:10:06,094 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:10:06,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:10:06,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-21 05:10:06,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2023-12-21 05:10:06,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 05:10:06,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2023-12-21 05:10:06,098 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 7 [2023-12-21 05:10:06,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:10:06,098 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2023-12-21 05:10:06,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:10:06,098 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2023-12-21 05:10:06,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 05:10:06,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:10:06,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:10:06,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 05:10:06,099 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:10:06,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:10:06,099 INFO L85 PathProgramCache]: Analyzing trace with hash -974159928, now seen corresponding path program 1 times [2023-12-21 05:10:06,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:10:06,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520623711] [2023-12-21 05:10:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:10:06,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:10:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:10:06,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:06,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:10:06,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520623711] [2023-12-21 05:10:06,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520623711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 05:10:06,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 05:10:06,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 05:10:06,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555580004] [2023-12-21 05:10:06,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 05:10:06,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 05:10:06,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:10:06,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 05:10:06,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 05:10:06,171 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:10:06,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:10:06,185 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2023-12-21 05:10:06,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 05:10:06,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-21 05:10:06,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:10:06,194 INFO L225 Difference]: With dead ends: 34 [2023-12-21 05:10:06,194 INFO L226 Difference]: Without dead ends: 19 [2023-12-21 05:10:06,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 05:10:06,195 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:10:06,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:10:06,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-21 05:10:06,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2023-12-21 05:10:06,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 05:10:06,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-12-21 05:10:06,214 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 8 [2023-12-21 05:10:06,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:10:06,214 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-12-21 05:10:06,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:10:06,214 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-12-21 05:10:06,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 05:10:06,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:10:06,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:10:06,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 05:10:06,215 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:10:06,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:10:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash -106156257, now seen corresponding path program 1 times [2023-12-21 05:10:06,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:10:06,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4888586] [2023-12-21 05:10:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:10:06,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:10:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:10:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:06,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:10:06,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4888586] [2023-12-21 05:10:06,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4888586] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:10:06,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115140143] [2023-12-21 05:10:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:10:06,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:10:06,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:10:06,319 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) [2023-12-21 05:10:06,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 05:10:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:10:06,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 05:10:06,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:10:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:06,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:10:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:06,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115140143] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:10:06,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:10:06,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-12-21 05:10:06,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752683535] [2023-12-21 05:10:06,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:10:06,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 05:10:06,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:10:06,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 05:10:06,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 05:10:06,411 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:10:06,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:10:06,450 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2023-12-21 05:10:06,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 05:10:06,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-21 05:10:06,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:10:06,453 INFO L225 Difference]: With dead ends: 38 [2023-12-21 05:10:06,453 INFO L226 Difference]: Without dead ends: 22 [2023-12-21 05:10:06,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-21 05:10:06,454 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:10:06,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 48 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:10:06,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-21 05:10:06,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2023-12-21 05:10:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 05:10:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-12-21 05:10:06,458 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 9 [2023-12-21 05:10:06,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:10:06,458 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-12-21 05:10:06,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:10:06,459 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-12-21 05:10:06,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-21 05:10:06,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:10:06,459 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:10:06,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 05:10:06,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:10:06,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:10:06,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:10:06,667 INFO L85 PathProgramCache]: Analyzing trace with hash 659299720, now seen corresponding path program 2 times [2023-12-21 05:10:06,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:10:06,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219385827] [2023-12-21 05:10:06,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:10:06,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:10:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:10:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:06,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:10:06,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219385827] [2023-12-21 05:10:06,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219385827] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:10:06,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845626008] [2023-12-21 05:10:06,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 05:10:06,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:10:06,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:10:06,783 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) [2023-12-21 05:10:06,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 05:10:06,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 05:10:06,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:10:06,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 05:10:06,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:10:06,866 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:06,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:10:06,946 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 05:10:06,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845626008] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:10:06,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:10:06,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 16 [2023-12-21 05:10:06,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771852995] [2023-12-21 05:10:06,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:10:06,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 05:10:06,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:10:06,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 05:10:06,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-21 05:10:06,952 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 14 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:10:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:10:07,153 INFO L93 Difference]: Finished difference Result 73 states and 97 transitions. [2023-12-21 05:10:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 05:10:07,154 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 14 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-21 05:10:07,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:10:07,157 INFO L225 Difference]: With dead ends: 73 [2023-12-21 05:10:07,157 INFO L226 Difference]: Without dead ends: 54 [2023-12-21 05:10:07,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-12-21 05:10:07,160 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 30 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:10:07,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 535 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:10:07,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-21 05:10:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 30. [2023-12-21 05:10:07,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 25 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 05:10:07,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2023-12-21 05:10:07,180 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 12 [2023-12-21 05:10:07,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:10:07,181 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2023-12-21 05:10:07,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 14 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:10:07,181 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2023-12-21 05:10:07,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-21 05:10:07,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:10:07,182 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:10:07,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 05:10:07,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:10:07,388 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:10:07,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:10:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1008514721, now seen corresponding path program 3 times [2023-12-21 05:10:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:10:07,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372903026] [2023-12-21 05:10:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:10:07,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:10:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:10:07,476 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:07,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:10:07,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372903026] [2023-12-21 05:10:07,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372903026] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:10:07,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136388419] [2023-12-21 05:10:07,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 05:10:07,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:10:07,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:10:07,480 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) [2023-12-21 05:10:07,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 05:10:07,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 05:10:07,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:10:07,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 05:10:07,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:10:07,532 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:07,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:10:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:07,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136388419] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:10:07,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:10:07,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-12-21 05:10:07,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079295194] [2023-12-21 05:10:07,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:10:07,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 05:10:07,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:10:07,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 05:10:07,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2023-12-21 05:10:07,600 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:10:07,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:10:07,863 INFO L93 Difference]: Finished difference Result 66 states and 87 transitions. [2023-12-21 05:10:07,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 05:10:07,865 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-21 05:10:07,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:10:07,866 INFO L225 Difference]: With dead ends: 66 [2023-12-21 05:10:07,866 INFO L226 Difference]: Without dead ends: 38 [2023-12-21 05:10:07,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=230, Unknown=0, NotChecked=0, Total=380 [2023-12-21 05:10:07,867 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:10:07,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 112 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 05:10:07,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-21 05:10:07,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2023-12-21 05:10:07,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 32 states have internal predecessors, (37), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 05:10:07,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2023-12-21 05:10:07,873 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 13 [2023-12-21 05:10:07,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:10:07,873 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2023-12-21 05:10:07,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:10:07,873 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2023-12-21 05:10:07,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 05:10:07,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:10:07,874 INFO L195 NwaCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:10:07,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 05:10:08,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:10:08,087 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:10:08,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:10:08,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1273225761, now seen corresponding path program 4 times [2023-12-21 05:10:08,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:10:08,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230763718] [2023-12-21 05:10:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:10:08,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:10:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:10:08,322 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:08,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:10:08,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230763718] [2023-12-21 05:10:08,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230763718] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:10:08,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723823899] [2023-12-21 05:10:08,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:10:08,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:10:08,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:10:08,324 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) [2023-12-21 05:10:08,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 05:10:08,397 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:10:08,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:10:08,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-21 05:10:08,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:10:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:08,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:10:08,752 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:08,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723823899] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:10:08,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:10:08,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2023-12-21 05:10:08,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646640990] [2023-12-21 05:10:08,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:10:08,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 05:10:08,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:10:08,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 05:10:08,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=647, Unknown=0, NotChecked=0, Total=930 [2023-12-21 05:10:08,754 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:10:19,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:10:19,635 INFO L93 Difference]: Finished difference Result 89 states and 119 transitions. [2023-12-21 05:10:19,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 05:10:19,636 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-21 05:10:19,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:10:19,636 INFO L225 Difference]: With dead ends: 89 [2023-12-21 05:10:19,636 INFO L226 Difference]: Without dead ends: 54 [2023-12-21 05:10:19,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=686, Invalid=1206, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 05:10:19,640 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:10:19,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 254 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 05:10:19,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-21 05:10:19,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2023-12-21 05:10:19,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 48 states have internal predecessors, (53), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 05:10:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2023-12-21 05:10:19,648 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 21 [2023-12-21 05:10:19,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:10:19,649 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2023-12-21 05:10:19,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:10:19,650 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2023-12-21 05:10:19,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 05:10:19,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:10:19,651 INFO L195 NwaCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:10:19,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 05:10:19,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:10:19,857 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:10:19,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:10:19,858 INFO L85 PathProgramCache]: Analyzing trace with hash 997738207, now seen corresponding path program 5 times [2023-12-21 05:10:19,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:10:19,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620726813] [2023-12-21 05:10:19,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:10:19,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:10:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:10:20,473 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:20,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:10:20,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620726813] [2023-12-21 05:10:20,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620726813] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:10:20,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97193320] [2023-12-21 05:10:20,473 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 05:10:20,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:10:20,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:10:20,474 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) [2023-12-21 05:10:20,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 05:10:21,578 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-12-21 05:10:21,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:10:21,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-21 05:10:21,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:10:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:21,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:10:22,917 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:10:22,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97193320] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:10:22,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:10:22,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2023-12-21 05:10:22,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128191670] [2023-12-21 05:10:22,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:10:22,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-21 05:10:22,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:10:22,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-21 05:10:22,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=2823, Unknown=0, NotChecked=0, Total=3906 [2023-12-21 05:10:22,921 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand has 63 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 63 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:36,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:16:36,961 INFO L93 Difference]: Finished difference Result 137 states and 183 transitions. [2023-12-21 05:16:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-21 05:16:36,962 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 63 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-21 05:16:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:16:36,963 INFO L225 Difference]: With dead ends: 137 [2023-12-21 05:16:36,963 INFO L226 Difference]: Without dead ends: 86 [2023-12-21 05:16:36,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 375.1s TimeCoverageRelationStatistics Valid=2901, Invalid=5462, Unknown=9, NotChecked=0, Total=8372 [2023-12-21 05:16:36,965 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 05:16:36,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 524 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 05:16:36,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-21 05:16:36,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2023-12-21 05:16:36,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 78 states have (on average 1.0897435897435896) internal successors, (85), 80 states have internal predecessors, (85), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 05:16:36,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2023-12-21 05:16:36,974 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 37 [2023-12-21 05:16:36,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:16:36,974 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2023-12-21 05:16:36,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 63 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:16:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2023-12-21 05:16:36,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 05:16:36,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:16:36,975 INFO L195 NwaCegarLoop]: trace histogram [61, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 05:16:36,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 05:16:37,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:37,176 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:16:37,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:16:37,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1675270367, now seen corresponding path program 6 times [2023-12-21 05:16:37,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:16:37,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208754115] [2023-12-21 05:16:37,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:16:37,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:16:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:16:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:16:38,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:16:38,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208754115] [2023-12-21 05:16:38,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208754115] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:16:38,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601621359] [2023-12-21 05:16:38,964 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 05:16:38,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:16:38,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:16:38,965 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) [2023-12-21 05:16:38,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 05:17:03,418 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2023-12-21 05:17:03,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:17:03,438 WARN L260 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 132 conjunts are in the unsatisfiable core [2023-12-21 05:17:03,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:17:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:03,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:17:20,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:17:20,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601621359] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:17:20,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:17:20,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 67] total 130 [2023-12-21 05:17:20,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574437198] [2023-12-21 05:17:20,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:17:20,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-12-21 05:17:20,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:17:20,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-12-21 05:17:20,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4288, Invalid=12482, Unknown=0, NotChecked=0, Total=16770 [2023-12-21 05:17:20,534 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 130 states, 129 states have (on average 1.0465116279069768) internal successors, (135), 129 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:17:25,798 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296)) (.cse8 (mod (+ 59 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse16 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 10) 4294967296)) (.cse1 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 1) 4294967296)) (.cse11 (mod (+ 14 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse20 (mod (+ 6 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse17 (mod (+ 9 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse26 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 46) 4294967296)) (.cse32 (mod (+ 29 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse23 (mod (+ 30 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse28 (mod (+ 35 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse14 (mod (+ 42 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse13 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 54) 4294967296)) (.cse4 (mod (+ 40 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse15 (mod (+ 41 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse42 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 45) 4294967296)) (.cse5 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 39) 4294967296)) (.cse35 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 11) 4294967296)) (.cse44 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 43) 4294967296)) (.cse48 (mod (+ 44 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse6 (mod (+ 57 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse9 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 58) 4294967296)) (.cse7 (mod (+ 56 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse12 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 55) 4294967296)) (.cse45 (mod (+ 53 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse46 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 17) 4294967296)) (.cse39 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 15) 4294967296)) (.cse52 (mod (+ 16 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse30 (mod (+ 23 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse47 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 18) 4294967296)) (.cse54 (mod (+ 19 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse37 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 20) 4294967296)) (.cse19 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 50) 4294967296)) (.cse10 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 13) 4294967296)) (.cse50 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 12) 4294967296)) (.cse34 (mod (+ 3 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse36 (mod (+ 2 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse18 (mod (+ 49 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse33 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4) 4294967296)) (.cse40 (mod (+ 5 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse53 (mod (+ 22 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse38 (mod (+ 21 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse25 (mod (+ 47 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse56 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 48) 4294967296)) (.cse24 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 60) 4294967296)) (.cse55 (mod (+ 51 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse51 (mod (+ 52 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse22 (mod (+ 31 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse3 (mod (+ 32 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse41 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 8) 4294967296)) (.cse21 (mod (+ 7 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse49 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 38) 4294967296)) (.cse31 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 28) 4294967296)) (.cse27 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 36) 4294967296)) (.cse59 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 37) 4294967296)) (.cse29 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 24) 4294967296)) (.cse58 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 25) 4294967296)) (.cse2 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 33) 4294967296)) (.cse43 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 34) 4294967296)) (.cse57 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 26) 4294967296)) (.cse60 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 27) 4294967296))) (and (or (< .cse0 268435455) (= (mod |c_ULTIMATE.start_main_~z~0#1| 4) 0)) (or (< .cse1 268435455) (< 268435454 .cse0)) (or (< .cse2 268435455) (< 268435454 .cse3)) (or (< .cse4 268435455) (< 268435454 .cse5)) (or (< .cse6 268435455) (< 268435454 .cse7)) (or (< .cse8 268435455) (< 268435454 .cse9)) (or (< 268435454 .cse10) (< .cse11 268435455)) (or (< .cse12 268435455) (< 268435454 .cse13)) (or (< .cse14 268435455) (< 268435454 .cse15)) (or (< .cse16 268435455) (< 268435454 .cse17)) (or (< 268435454 .cse18) (< .cse19 268435455)) (or (< 268435454 .cse20) (< .cse21 268435455)) (or (< .cse22 268435455) (< 268435454 .cse23)) (or (< .cse24 268435455) (< 268435454 .cse8)) (or (< .cse25 268435455) (< 268435454 .cse26)) (or (< .cse27 268435455) (< 268435454 .cse28)) (or (< .cse29 268435455) (< 268435454 .cse30)) (or (< 268435454 .cse31) (< .cse32 268435455)) (or (< .cse33 268435455) (< 268435454 .cse34)) (or (< .cse35 268435455) (< 268435454 .cse16)) (or (< .cse36 268435455) (< 268435454 .cse1)) (or (< 268435454 .cse37) (< .cse38 268435455)) (or (< .cse39 268435455) (< 268435454 .cse11)) (or (< .cse20 268435455) (< 268435454 .cse40)) (or (< .cse17 268435455) (< 268435454 .cse41)) (or (< 268435454 .cse42) (< .cse26 268435455)) (or (< 268435454 .cse32) (< .cse23 268435455)) (or (< .cse28 268435455) (< 268435454 .cse43)) (or (< .cse44 268435455) (< 268435454 .cse14)) (or (< 268435454 .cse45) (< .cse13 268435455)) (or (< 268435454 .cse4) (< .cse15 268435455)) (or (< 268435454 .cse46) (< .cse47 268435455)) (or (< .cse42 268435455) (< 268435454 .cse48)) (or (< .cse5 268435455) (< 268435454 .cse49)) (or (< .cse50 268435455) (< 268435454 .cse35)) (or (< 268435454 .cse44) (< .cse48 268435455)) (or (< 268435454 .cse6) (< .cse9 268435455)) (or (< .cse7 268435455) (< 268435454 .cse12)) (or (< .cse45 268435455) (< 268435454 .cse51)) (or (< .cse46 268435455) (< 268435454 .cse52)) (or (< 268435454 .cse39) (< .cse52 268435455)) (or (< 268435454 .cse53) (< .cse30 268435455)) (or (< 268435454 .cse47) (< .cse54 268435455)) (or (< 268435454 .cse54) (< .cse37 268435455)) (or (< 268435454 .cse19) (< .cse55 268435455)) (or (< .cse10 268435455) (< 268435454 .cse50)) (or (< .cse34 268435455) (< 268435454 .cse36)) (or (< 268435454 .cse56) (< .cse18 268435455)) (or (< 268435454 .cse33) (< .cse40 268435455)) (or (< .cse53 268435455) (< 268435454 .cse38)) (or (< 268435454 .cse25) (< .cse56 268435455)) (or (< 268435454 .cse24) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 61) 4294967296) 268435455)) (or (< .cse57 268435455) (< 268435454 .cse58)) (or (< 268435454 .cse55) (< .cse51 268435455)) (or (< 268435454 .cse22) (< .cse3 268435455)) (or (< .cse41 268435455) (< 268435454 .cse21)) (or (< 268435454 .cse59) (< .cse49 268435455)) (or (< 268435454 .cse60) (< .cse31 268435455)) (or (< 268435454 .cse27) (< .cse59 268435455)) (or (< 268435454 .cse29) (< .cse58 268435455)) (or (< 268435454 .cse2) (< .cse43 268435455)) (or (< 268435454 .cse57) (< .cse60 268435455)))) is different from false [2023-12-21 05:17:29,820 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296)) (.cse8 (mod (+ 59 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse16 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 10) 4294967296)) (.cse1 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 1) 4294967296)) (.cse11 (mod (+ 14 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse20 (mod (+ 6 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse17 (mod (+ 9 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse25 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 46) 4294967296)) (.cse31 (mod (+ 29 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse23 (mod (+ 30 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse27 (mod (+ 35 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse14 (mod (+ 42 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse13 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 54) 4294967296)) (.cse4 (mod (+ 40 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse15 (mod (+ 41 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse41 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 45) 4294967296)) (.cse5 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 39) 4294967296)) (.cse34 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 11) 4294967296)) (.cse43 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 43) 4294967296)) (.cse47 (mod (+ 44 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse6 (mod (+ 57 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse9 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 58) 4294967296)) (.cse7 (mod (+ 56 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse12 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 55) 4294967296)) (.cse44 (mod (+ 53 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse45 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 17) 4294967296)) (.cse38 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 15) 4294967296)) (.cse51 (mod (+ 16 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse29 (mod (+ 23 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse46 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 18) 4294967296)) (.cse53 (mod (+ 19 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse36 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 20) 4294967296)) (.cse19 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 50) 4294967296)) (.cse10 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 13) 4294967296)) (.cse49 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 12) 4294967296)) (.cse33 (mod (+ 3 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse35 (mod (+ 2 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse18 (mod (+ 49 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse32 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4) 4294967296)) (.cse39 (mod (+ 5 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse52 (mod (+ 22 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse37 (mod (+ 21 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse24 (mod (+ 47 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse55 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 48) 4294967296)) (.cse54 (mod (+ 51 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse50 (mod (+ 52 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse22 (mod (+ 31 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse3 (mod (+ 32 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse40 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 8) 4294967296)) (.cse21 (mod (+ 7 |c_ULTIMATE.start_main_~z~0#1|) 4294967296)) (.cse48 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 38) 4294967296)) (.cse30 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 28) 4294967296)) (.cse26 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 36) 4294967296)) (.cse58 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 37) 4294967296)) (.cse28 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 24) 4294967296)) (.cse57 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 25) 4294967296)) (.cse2 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 33) 4294967296)) (.cse42 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 34) 4294967296)) (.cse56 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 26) 4294967296)) (.cse59 (mod (+ |c_ULTIMATE.start_main_~z~0#1| 27) 4294967296))) (and (or (< .cse0 268435455) (= (mod |c_ULTIMATE.start_main_~z~0#1| 4) 0)) (or (< .cse1 268435455) (< 268435454 .cse0)) (or (< .cse2 268435455) (< 268435454 .cse3)) (or (< .cse4 268435455) (< 268435454 .cse5)) (or (< .cse6 268435455) (< 268435454 .cse7)) (or (< .cse8 268435455) (< 268435454 .cse9)) (or (< 268435454 .cse10) (< .cse11 268435455)) (or (< .cse12 268435455) (< 268435454 .cse13)) (or (< .cse14 268435455) (< 268435454 .cse15)) (or (< .cse16 268435455) (< 268435454 .cse17)) (or (< 268435454 .cse18) (< .cse19 268435455)) (or (< 268435454 .cse20) (< .cse21 268435455)) (or (< .cse22 268435455) (< 268435454 .cse23)) (or (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 60) 4294967296) 268435455) (< 268435454 .cse8)) (or (< .cse24 268435455) (< 268435454 .cse25)) (or (< .cse26 268435455) (< 268435454 .cse27)) (or (< .cse28 268435455) (< 268435454 .cse29)) (or (< 268435454 .cse30) (< .cse31 268435455)) (or (< .cse32 268435455) (< 268435454 .cse33)) (or (< .cse34 268435455) (< 268435454 .cse16)) (or (< .cse35 268435455) (< 268435454 .cse1)) (or (< 268435454 .cse36) (< .cse37 268435455)) (or (< .cse38 268435455) (< 268435454 .cse11)) (or (< .cse20 268435455) (< 268435454 .cse39)) (or (< .cse17 268435455) (< 268435454 .cse40)) (or (< 268435454 .cse41) (< .cse25 268435455)) (or (< 268435454 .cse31) (< .cse23 268435455)) (or (< .cse27 268435455) (< 268435454 .cse42)) (or (< .cse43 268435455) (< 268435454 .cse14)) (or (< 268435454 .cse44) (< .cse13 268435455)) (or (< 268435454 .cse4) (< .cse15 268435455)) (or (< 268435454 .cse45) (< .cse46 268435455)) (or (< .cse41 268435455) (< 268435454 .cse47)) (or (< .cse5 268435455) (< 268435454 .cse48)) (or (< .cse49 268435455) (< 268435454 .cse34)) (or (< 268435454 .cse43) (< .cse47 268435455)) (or (< 268435454 .cse6) (< .cse9 268435455)) (or (< .cse7 268435455) (< 268435454 .cse12)) (or (< .cse44 268435455) (< 268435454 .cse50)) (or (< .cse45 268435455) (< 268435454 .cse51)) (or (< 268435454 .cse38) (< .cse51 268435455)) (or (< 268435454 .cse52) (< .cse29 268435455)) (or (< 268435454 .cse46) (< .cse53 268435455)) (or (< 268435454 .cse53) (< .cse36 268435455)) (or (< 268435454 .cse19) (< .cse54 268435455)) (or (< .cse10 268435455) (< 268435454 .cse49)) (or (< .cse33 268435455) (< 268435454 .cse35)) (or (< 268435454 .cse55) (< .cse18 268435455)) (or (< 268435454 .cse32) (< .cse39 268435455)) (or (< .cse52 268435455) (< 268435454 .cse37)) (or (< 268435454 .cse24) (< .cse55 268435455)) (or (< .cse56 268435455) (< 268435454 .cse57)) (or (< 268435454 .cse54) (< .cse50 268435455)) (or (< 268435454 .cse22) (< .cse3 268435455)) (or (< .cse40 268435455) (< 268435454 .cse21)) (or (< 268435454 .cse58) (< .cse48 268435455)) (or (< 268435454 .cse59) (< .cse30 268435455)) (or (< 268435454 .cse26) (< .cse58 268435455)) (or (< 268435454 .cse28) (< .cse57 268435455)) (or (< 268435454 .cse2) (< .cse42 268435455)) (or (< 268435454 .cse56) (< .cse59 268435455)))) is different from false Received shutdown request... [2023-12-21 05:24:49,964 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 [2023-12-21 05:24:49,966 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 05:24:50,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 05:24:51,165 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-21 05:24:51,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-21 05:24:51,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=4292, Invalid=12484, Unknown=2, NotChecked=514, Total=17292 [2023-12-21 05:24:51,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-21 05:24:51,183 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 3576 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 3975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 393 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 05:24:51,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 133 Invalid, 3975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 3576 Invalid, 0 Unknown, 393 Unchecked, 1.1s Time] [2023-12-21 05:24:51,184 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 05:24:51,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 05:24:51,185 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (85states) and FLOYD_HOARE automaton (currently 68 states, 130 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-21 05:24:51,188 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2023-12-21 05:24:51,189 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 05:24:51,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 05:24:51 BoogieIcfgContainer [2023-12-21 05:24:51,192 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 05:24:51,192 INFO L158 Benchmark]: Toolchain (without parser) took 885941.64ms. Allocated memory was 205.5MB in the beginning and 275.8MB in the end (delta: 70.3MB). Free memory was 171.7MB in the beginning and 206.9MB in the end (delta: -35.2MB). Peak memory consumption was 154.4MB. Max. memory is 8.0GB. [2023-12-21 05:24:51,192 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 205.5MB. Free memory is still 163.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 05:24:51,192 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.72ms. Allocated memory is still 205.5MB. Free memory was 171.7MB in the beginning and 160.6MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 05:24:51,193 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.27ms. Allocated memory is still 205.5MB. Free memory was 160.6MB in the beginning and 159.5MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 05:24:51,193 INFO L158 Benchmark]: Boogie Preprocessor took 21.86ms. Allocated memory is still 205.5MB. Free memory was 159.5MB in the beginning and 157.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 05:24:51,193 INFO L158 Benchmark]: RCFGBuilder took 261.37ms. Allocated memory is still 205.5MB. Free memory was 157.5MB in the beginning and 147.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-21 05:24:51,193 INFO L158 Benchmark]: TraceAbstraction took 885482.42ms. Allocated memory was 205.5MB in the beginning and 275.8MB in the end (delta: 70.3MB). Free memory was 146.6MB in the beginning and 206.9MB in the end (delta: -60.3MB). Peak memory consumption was 129.3MB. Max. memory is 8.0GB. [2023-12-21 05:24:51,195 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 205.5MB. Free memory is still 163.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 150.72ms. Allocated memory is still 205.5MB. Free memory was 171.7MB in the beginning and 160.6MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.27ms. Allocated memory is still 205.5MB. Free memory was 160.6MB in the beginning and 159.5MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.86ms. Allocated memory is still 205.5MB. Free memory was 159.5MB in the beginning and 157.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 261.37ms. Allocated memory is still 205.5MB. Free memory was 157.5MB in the beginning and 147.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 885482.42ms. Allocated memory was 205.5MB in the beginning and 275.8MB in the end (delta: 70.3MB). Free memory was 146.6MB in the beginning and 206.9MB in the end (delta: -60.3MB). Peak memory consumption was 129.3MB. 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: 7]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 7). Cancelled while NwaCegarLoop was constructing difference of abstraction (85states) and FLOYD_HOARE automaton (currently 68 states, 130 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 885.4s, OverallIterations: 9, TraceHistogramMax: 61, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 836.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 81 mSDsluCounter, 1701 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 393 IncrementalHoareTripleChecker+Unchecked, 1531 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5204 IncrementalHoareTripleChecker+Invalid, 5648 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 170 mSDtfsCounter, 5204 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 510 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 304 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1248 ImplicationChecksByTransitivity, 412.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=8, InterpolantAutomatonStates: 135, 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, 8 MinimizatonAttempts, 38 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 25.7s SatisfiabilityAnalysisTime, 22.1s InterpolantComputationTime, 343 NumberOfCodeBlocks, 343 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 483 ConstructedInterpolants, 0 QuantifiedInterpolants, 2219 SizeOfPredicates, 1 NumberOfNonLiveVariables, 609 ConjunctsInSsa, 256 ConjunctsInUnsatCore, 21 InterpolantComputations, 3 PerfectInterpolantSequences, 1/7329 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