/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.factorial4even.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:24:29,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:24:29,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 19:24:29,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:24:29,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:24:29,701 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:24:29,701 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:24:29,701 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:24:29,702 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:24:29,705 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:24:29,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:24:29,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:24:29,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:24:29,706 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:24:29,707 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:24:29,707 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:24:29,707 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:24:29,707 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:24:29,707 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:24:29,708 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:24:29,708 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:24:29,709 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:24:29,709 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:24:29,709 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:24:29,709 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:24:29,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:24:29,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:24:29,710 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:24:29,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:24:29,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:24:29,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:24:29,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:24:29,711 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:24:29,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:24:29,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:24:29,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:24:29,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:24:29,712 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:24:29,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:24:29,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:24:29,712 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:24:29,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:24:29,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:24:29,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:24:29,933 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:24:29,933 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:24:29,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.factorial4even.c [2023-12-16 19:24:31,168 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:24:31,332 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:24:31,332 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.factorial4even.c [2023-12-16 19:24:31,338 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a10bdb3c8/92b9fd52e5204178bfe8662f831bbd5c/FLAG2b92065d0 [2023-12-16 19:24:31,365 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a10bdb3c8/92b9fd52e5204178bfe8662f831bbd5c [2023-12-16 19:24:31,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:24:31,368 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:24:31,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:24:31,369 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:24:31,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:24:31,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:24:31" (1/1) ... [2023-12-16 19:24:31,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d8eefe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:24:31, skipping insertion in model container [2023-12-16 19:24:31,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:24:31" (1/1) ... [2023-12-16 19:24:31,393 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:24:31,490 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.factorial4even.c[1439,1452] [2023-12-16 19:24:31,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:24:31,531 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:24:31,539 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.factorial4even.c[1439,1452] [2023-12-16 19:24:31,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:24:31,572 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:24:31,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:24:31 WrapperNode [2023-12-16 19:24:31,573 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:24:31,574 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:24:31,574 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:24:31,574 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:24:31,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:24:31" (1/1) ... [2023-12-16 19:24:31,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:24:31" (1/1) ... [2023-12-16 19:24:31,629 INFO L138 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 110 [2023-12-16 19:24:31,630 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:24:31,630 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:24:31,630 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:24:31,631 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:24:31,641 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:24:31" (1/1) ... [2023-12-16 19:24:31,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:24:31" (1/1) ... [2023-12-16 19:24:31,651 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:24:31" (1/1) ... [2023-12-16 19:24:31,676 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]. [2023-12-16 19:24:31,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:24:31" (1/1) ... [2023-12-16 19:24:31,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:24:31" (1/1) ... [2023-12-16 19:24:31,681 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:24:31" (1/1) ... [2023-12-16 19:24:31,683 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:24:31" (1/1) ... [2023-12-16 19:24:31,684 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:24:31" (1/1) ... [2023-12-16 19:24:31,685 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:24:31" (1/1) ... [2023-12-16 19:24:31,687 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:24:31,688 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:24:31,688 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:24:31,688 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:24:31,688 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:24:31" (1/1) ... [2023-12-16 19:24:31,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:24:31,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:24:31,712 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) [2023-12-16 19:24:31,732 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 [2023-12-16 19:24:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:24:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:24:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:24:31,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:24:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 19:24:31,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 19:24:31,800 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:24:31,802 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:24:32,005 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:24:32,021 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:24:32,021 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:24:32,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:24:32 BoogieIcfgContainer [2023-12-16 19:24:32,022 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:24:32,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:24:32,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:24:32,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:24:32,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:24:31" (1/3) ... [2023-12-16 19:24:32,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2c19b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:24:32, skipping insertion in model container [2023-12-16 19:24:32,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:24:31" (2/3) ... [2023-12-16 19:24:32,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2c19b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:24:32, skipping insertion in model container [2023-12-16 19:24:32,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:24:32" (3/3) ... [2023-12-16 19:24:32,027 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.factorial4even.c [2023-12-16 19:24:32,040 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:24:32,040 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:24:32,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:24:32,079 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;@8dea8a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:24:32,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:24:32,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 19:24:32,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 19:24:32,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:24:32,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:24:32,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:24:32,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:24:32,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1386552517, now seen corresponding path program 1 times [2023-12-16 19:24:32,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:24:32,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260479481] [2023-12-16 19:24:32,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:24:32,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:24:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:24:32,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:24:32,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:24:32,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260479481] [2023-12-16 19:24:32,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260479481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:24:32,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:24:32,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 19:24:32,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186062963] [2023-12-16 19:24:32,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:24:32,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 19:24:32,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:24:32,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 19:24:32,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:24:32,705 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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) [2023-12-16 19:24:32,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:24:32,843 INFO L93 Difference]: Finished difference Result 68 states and 107 transitions. [2023-12-16 19:24:32,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 19:24:32,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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 10 [2023-12-16 19:24:32,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:24:32,850 INFO L225 Difference]: With dead ends: 68 [2023-12-16 19:24:32,850 INFO L226 Difference]: Without dead ends: 46 [2023-12-16 19:24:32,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-16 19:24:32,855 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 85 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:24:32,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 94 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:24:32,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-16 19:24:32,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 33. [2023-12-16 19:24:32,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 19:24:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2023-12-16 19:24:32,882 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 10 [2023-12-16 19:24:32,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:24:32,883 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2023-12-16 19:24:32,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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) [2023-12-16 19:24:32,883 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2023-12-16 19:24:32,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-16 19:24:32,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:24:32,884 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:24:32,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:24:32,884 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:24:32,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:24:32,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1220180945, now seen corresponding path program 1 times [2023-12-16 19:24:32,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:24:32,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183888333] [2023-12-16 19:24:32,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:24:32,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:24:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:24:32,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 19:24:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:24:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:24:32,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:24:32,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183888333] [2023-12-16 19:24:32,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183888333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:24:32,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:24:32,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:24:32,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179282104] [2023-12-16 19:24:32,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:24:32,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:24:32,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:24:32,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:24:32,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:24:32,966 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 19:24:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:24:33,004 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2023-12-16 19:24:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:24:33,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-12-16 19:24:33,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:24:33,006 INFO L225 Difference]: With dead ends: 55 [2023-12-16 19:24:33,006 INFO L226 Difference]: Without dead ends: 53 [2023-12-16 19:24:33,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:24:33,007 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 21 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:24:33,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 218 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:24:33,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-16 19:24:33,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2023-12-16 19:24:33,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 33 states have internal predecessors, (42), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 19:24:33,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2023-12-16 19:24:33,014 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 20 [2023-12-16 19:24:33,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:24:33,015 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2023-12-16 19:24:33,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 19:24:33,015 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2023-12-16 19:24:33,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 19:24:33,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:24:33,015 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:24:33,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 19:24:33,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:24:33,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:24:33,016 INFO L85 PathProgramCache]: Analyzing trace with hash 798532059, now seen corresponding path program 1 times [2023-12-16 19:24:33,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:24:33,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810867816] [2023-12-16 19:24:33,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:24:33,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:24:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:24:33,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 19:24:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:24:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:24:33,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:24:33,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810867816] [2023-12-16 19:24:33,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810867816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:24:33,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:24:33,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:24:33,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512972747] [2023-12-16 19:24:33,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:24:33,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:24:33,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:24:33,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:24:33,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:24:33,065 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 19:24:33,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:24:33,083 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2023-12-16 19:24:33,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:24:33,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-12-16 19:24:33,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:24:33,084 INFO L225 Difference]: With dead ends: 68 [2023-12-16 19:24:33,085 INFO L226 Difference]: Without dead ends: 42 [2023-12-16 19:24:33,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:24:33,086 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:24:33,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 98 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:24:33,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-16 19:24:33,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-12-16 19:24:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 35 states have internal predecessors, (44), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 19:24:33,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2023-12-16 19:24:33,092 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 21 [2023-12-16 19:24:33,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:24:33,093 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2023-12-16 19:24:33,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 19:24:33,093 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2023-12-16 19:24:33,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 19:24:33,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:24:33,094 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:24:33,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:24:33,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:24:33,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:24:33,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1407493461, now seen corresponding path program 1 times [2023-12-16 19:24:33,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:24:33,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247297796] [2023-12-16 19:24:33,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:24:33,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:24:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:24:33,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-16 19:24:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:24:33,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:24:33,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:24:33,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247297796] [2023-12-16 19:24:33,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247297796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:24:33,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:24:33,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:24:33,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516137444] [2023-12-16 19:24:33,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:24:33,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:24:33,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:24:33,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:24:33,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:24:33,314 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 19:24:33,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:24:33,406 INFO L93 Difference]: Finished difference Result 82 states and 105 transitions. [2023-12-16 19:24:33,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:24:33,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-12-16 19:24:33,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:24:33,408 INFO L225 Difference]: With dead ends: 82 [2023-12-16 19:24:33,408 INFO L226 Difference]: Without dead ends: 54 [2023-12-16 19:24:33,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-16 19:24:33,416 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 60 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:24:33,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 132 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:24:33,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-16 19:24:33,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2023-12-16 19:24:33,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 36 states have internal predecessors, (46), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 19:24:33,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2023-12-16 19:24:33,430 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 22 [2023-12-16 19:24:33,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:24:33,430 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2023-12-16 19:24:33,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 19:24:33,431 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2023-12-16 19:24:33,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-16 19:24:33,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:24:33,431 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:24:33,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 19:24:33,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:24:33,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:24:33,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1795578398, now seen corresponding path program 1 times [2023-12-16 19:24:33,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:24:33,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575955418] [2023-12-16 19:24:33,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:24:33,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:24:33,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:24:33,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973357929] [2023-12-16 19:24:33,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:24:33,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:24:33,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:24:33,481 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) [2023-12-16 19:24:33,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 19:24:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:24:33,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-16 19:24:33,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:24:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 19:24:33,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:24:33,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:24:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575955418] [2023-12-16 19:24:33,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:24:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973357929] [2023-12-16 19:24:33,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973357929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:24:33,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:24:33,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:24:33,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995818207] [2023-12-16 19:24:33,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:24:33,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:24:33,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:24:33,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:24:33,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:24:33,786 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 19:24:33,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:24:33,857 INFO L93 Difference]: Finished difference Result 79 states and 100 transitions. [2023-12-16 19:24:33,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:24:33,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2023-12-16 19:24:33,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:24:33,860 INFO L225 Difference]: With dead ends: 79 [2023-12-16 19:24:33,860 INFO L226 Difference]: Without dead ends: 51 [2023-12-16 19:24:33,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:24:33,861 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:24:33,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 54 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:24:33,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-16 19:24:33,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-12-16 19:24:33,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 42 states have internal predecessors, (52), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 19:24:33,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2023-12-16 19:24:33,874 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 29 [2023-12-16 19:24:33,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:24:33,874 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2023-12-16 19:24:33,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 19:24:33,875 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2023-12-16 19:24:33,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-16 19:24:33,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:24:33,875 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:24:33,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 19:24:34,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:24:34,081 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:24:34,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:24:34,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1322629854, now seen corresponding path program 1 times [2023-12-16 19:24:34,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:24:34,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048006741] [2023-12-16 19:24:34,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:24:34,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:24:34,089 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:24:34,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492962543] [2023-12-16 19:24:34,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:24:34,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:24:34,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:24:34,100 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) [2023-12-16 19:24:34,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 19:24:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:24:34,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-16 19:24:34,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:24:34,521 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 19:24:34,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:24:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 19:24:34,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:24:34,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048006741] [2023-12-16 19:24:34,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:24:34,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492962543] [2023-12-16 19:24:34,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492962543] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:24:34,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 19:24:34,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2023-12-16 19:24:34,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536792297] [2023-12-16 19:24:34,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 19:24:34,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-16 19:24:34,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:24:34,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-16 19:24:34,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2023-12-16 19:24:34,950 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 24 states have internal predecessors, (45), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 19:24:35,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:24:35,574 INFO L93 Difference]: Finished difference Result 100 states and 129 transitions. [2023-12-16 19:24:35,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 19:24:35,575 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 24 states have internal predecessors, (45), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 30 [2023-12-16 19:24:35,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:24:35,576 INFO L225 Difference]: With dead ends: 100 [2023-12-16 19:24:35,576 INFO L226 Difference]: Without dead ends: 98 [2023-12-16 19:24:35,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=295, Invalid=1265, Unknown=0, NotChecked=0, Total=1560 [2023-12-16 19:24:35,577 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 343 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:24:35,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 251 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:24:35,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-16 19:24:35,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 75. [2023-12-16 19:24:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 61 states have (on average 1.278688524590164) internal successors, (78), 64 states have internal predecessors, (78), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-16 19:24:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 96 transitions. [2023-12-16 19:24:35,587 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 96 transitions. Word has length 30 [2023-12-16 19:24:35,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:24:35,587 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 96 transitions. [2023-12-16 19:24:35,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 24 states have internal predecessors, (45), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 19:24:35,587 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 96 transitions. [2023-12-16 19:24:35,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-16 19:24:35,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:24:35,588 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:24:35,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 19:24:35,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-16 19:24:35,794 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:24:35,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:24:35,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1984045176, now seen corresponding path program 1 times [2023-12-16 19:24:35,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:24:35,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118644491] [2023-12-16 19:24:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:24:35,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:24:35,802 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:24:35,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592761207] [2023-12-16 19:24:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:24:35,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:24:35,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:24:35,825 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) [2023-12-16 19:24:35,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 19:24:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:24:35,919 WARN L260 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 109 conjunts are in the unsatisfiable core [2023-12-16 19:24:35,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:24:36,298 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 19:24:36,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:24:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 19:24:37,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:24:37,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118644491] [2023-12-16 19:24:37,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:24:37,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592761207] [2023-12-16 19:24:37,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592761207] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:24:37,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 19:24:37,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24] total 39 [2023-12-16 19:24:37,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121339232] [2023-12-16 19:24:37,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 19:24:37,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-16 19:24:37,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:24:37,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-16 19:24:37,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1270, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 19:24:37,989 INFO L87 Difference]: Start difference. First operand 75 states and 96 transitions. Second operand has 39 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 35 states have internal predecessors, (59), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 19:24:43,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:24:43,402 INFO L93 Difference]: Finished difference Result 204 states and 267 transitions. [2023-12-16 19:24:43,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-16 19:24:43,402 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 35 states have internal predecessors, (59), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 42 [2023-12-16 19:24:43,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:24:43,403 INFO L225 Difference]: With dead ends: 204 [2023-12-16 19:24:43,404 INFO L226 Difference]: Without dead ends: 158 [2023-12-16 19:24:43,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2838 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1968, Invalid=9374, Unknown=0, NotChecked=0, Total=11342 [2023-12-16 19:24:43,407 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 619 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 19:24:43,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 179 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 19:24:43,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-16 19:24:43,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 90. [2023-12-16 19:24:43,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 76 states have internal predecessors, (89), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 19:24:43,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 113 transitions. [2023-12-16 19:24:43,424 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 113 transitions. Word has length 42 [2023-12-16 19:24:43,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:24:43,425 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 113 transitions. [2023-12-16 19:24:43,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 35 states have internal predecessors, (59), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 19:24:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 113 transitions. [2023-12-16 19:24:43,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 19:24:43,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:24:43,430 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:24:43,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 19:24:43,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:24:43,636 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:24:43,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:24:43,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1420810627, now seen corresponding path program 1 times [2023-12-16 19:24:43,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:24:43,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409290854] [2023-12-16 19:24:43,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:24:43,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:24:43,648 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:24:43,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233102230] [2023-12-16 19:24:43,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:24:43,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:24:43,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:24:43,650 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) [2023-12-16 19:24:43,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 19:24:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:24:43,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-16 19:24:43,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:24:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 19:24:44,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:24:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 10 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 19:24:44,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:24:44,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409290854] [2023-12-16 19:24:44,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:24:44,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233102230] [2023-12-16 19:24:44,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233102230] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:24:44,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 19:24:44,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 28 [2023-12-16 19:24:44,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227981459] [2023-12-16 19:24:44,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 19:24:44,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-16 19:24:44,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:24:44,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-16 19:24:44,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2023-12-16 19:24:44,597 INFO L87 Difference]: Start difference. First operand 90 states and 113 transitions. Second operand has 28 states, 25 states have (on average 2.56) internal successors, (64), 28 states have internal predecessors, (64), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-16 19:24:45,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:24:45,263 INFO L93 Difference]: Finished difference Result 165 states and 208 transitions. [2023-12-16 19:24:45,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 19:24:45,263 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.56) internal successors, (64), 28 states have internal predecessors, (64), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) Word has length 50 [2023-12-16 19:24:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:24:45,264 INFO L225 Difference]: With dead ends: 165 [2023-12-16 19:24:45,264 INFO L226 Difference]: Without dead ends: 112 [2023-12-16 19:24:45,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=395, Invalid=1585, Unknown=0, NotChecked=0, Total=1980 [2023-12-16 19:24:45,266 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 197 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:24:45,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 217 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 19:24:45,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-16 19:24:45,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2023-12-16 19:24:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 87 states have (on average 1.1724137931034482) internal successors, (102), 90 states have internal predecessors, (102), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-16 19:24:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 132 transitions. [2023-12-16 19:24:45,278 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 132 transitions. Word has length 50 [2023-12-16 19:24:45,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:24:45,279 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 132 transitions. [2023-12-16 19:24:45,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.56) internal successors, (64), 28 states have internal predecessors, (64), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-16 19:24:45,279 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 132 transitions. [2023-12-16 19:24:45,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 19:24:45,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:24:45,279 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:24:45,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 19:24:45,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:24:45,485 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:24:45,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:24:45,486 INFO L85 PathProgramCache]: Analyzing trace with hash -410426276, now seen corresponding path program 2 times [2023-12-16 19:24:45,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:24:45,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541595796] [2023-12-16 19:24:45,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:24:45,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:24:45,500 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:24:45,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016115795] [2023-12-16 19:24:45,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 19:24:45,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:24:45,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:24:45,502 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) [2023-12-16 19:24:45,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 19:24:45,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 19:24:45,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 19:24:45,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 89 conjunts are in the unsatisfiable core [2023-12-16 19:24:45,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:24:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 26 proven. 43 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-16 19:24:46,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:24:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 26 proven. 43 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-16 19:24:47,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:24:47,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541595796] [2023-12-16 19:24:47,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 19:24:47,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016115795] [2023-12-16 19:24:47,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016115795] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:24:47,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 19:24:47,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 37 [2023-12-16 19:24:47,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112911490] [2023-12-16 19:24:47,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 19:24:47,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-16 19:24:47,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:24:47,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-16 19:24:47,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1150, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 19:24:47,792 INFO L87 Difference]: Start difference. First operand 107 states and 132 transitions. Second operand has 37 states, 33 states have (on average 2.5757575757575757) internal successors, (85), 36 states have internal predecessors, (85), 10 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 8 states have call successors, (12) [2023-12-16 19:25:06,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 19:25:07,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:25:07,023 INFO L93 Difference]: Finished difference Result 307 states and 402 transitions. [2023-12-16 19:25:07,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-16 19:25:07,024 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 2.5757575757575757) internal successors, (85), 36 states have internal predecessors, (85), 10 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 8 states have call successors, (12) Word has length 70 [2023-12-16 19:25:07,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:25:07,026 INFO L225 Difference]: With dead ends: 307 [2023-12-16 19:25:07,026 INFO L226 Difference]: Without dead ends: 305 [2023-12-16 19:25:07,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=1056, Invalid=4198, Unknown=2, NotChecked=0, Total=5256 [2023-12-16 19:25:07,028 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 492 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 90 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-16 19:25:07,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 548 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 477 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2023-12-16 19:25:07,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-16 19:25:07,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 251. [2023-12-16 19:25:07,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 203 states have (on average 1.2216748768472907) internal successors, (248), 215 states have internal predecessors, (248), 41 states have call successors, (41), 6 states have call predecessors, (41), 6 states have return successors, (41), 29 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 19:25:07,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 330 transitions. [2023-12-16 19:25:07,070 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 330 transitions. Word has length 70 [2023-12-16 19:25:07,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:25:07,070 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 330 transitions. [2023-12-16 19:25:07,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 2.5757575757575757) internal successors, (85), 36 states have internal predecessors, (85), 10 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 8 states have call successors, (12) [2023-12-16 19:25:07,070 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 330 transitions. [2023-12-16 19:25:07,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 19:25:07,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:25:07,071 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:25:07,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 19:25:07,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:25:07,277 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:25:07,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:25:07,277 INFO L85 PathProgramCache]: Analyzing trace with hash 286652354, now seen corresponding path program 2 times [2023-12-16 19:25:07,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:25:07,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116184360] [2023-12-16 19:25:07,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:25:07,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:25:07,289 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 19:25:07,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516379571] [2023-12-16 19:25:07,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 19:25:07,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:25:07,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:25:07,290 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) [2023-12-16 19:25:07,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 19:25:07,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 19:25:07,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 19:25:07,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 169 conjunts are in the unsatisfiable core [2023-12-16 19:25:07,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 19:25:47,061 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 [2023-12-16 19:25:47,061 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 [2023-12-16 19:25:48,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 19:25:48,267 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 [2023-12-16 19:25:48,304 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 [2023-12-16 19:25:48,305 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 19:25:48,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 19:25:48,306 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 83 with TraceHistMax 8,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2023-12-16 19:25:48,309 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 19:25:48,310 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 19:25:48,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:25:48 BoogieIcfgContainer [2023-12-16 19:25:48,312 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 19:25:48,312 INFO L158 Benchmark]: Toolchain (without parser) took 76944.23ms. Allocated memory was 263.2MB in the beginning and 465.6MB in the end (delta: 202.4MB). Free memory was 211.1MB in the beginning and 349.5MB in the end (delta: -138.4MB). Peak memory consumption was 64.9MB. Max. memory is 8.0GB. [2023-12-16 19:25:48,312 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 160.4MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:25:48,312 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.24ms. Allocated memory is still 263.2MB. Free memory was 211.1MB in the beginning and 199.1MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 19:25:48,312 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.41ms. Allocated memory is still 263.2MB. Free memory was 199.1MB in the beginning and 196.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 19:25:48,313 INFO L158 Benchmark]: Boogie Preprocessor took 56.59ms. Allocated memory is still 263.2MB. Free memory was 196.0MB in the beginning and 193.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 19:25:48,313 INFO L158 Benchmark]: RCFGBuilder took 334.11ms. Allocated memory is still 263.2MB. Free memory was 193.9MB in the beginning and 176.0MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-16 19:25:48,313 INFO L158 Benchmark]: TraceAbstraction took 76288.56ms. Allocated memory was 263.2MB in the beginning and 465.6MB in the end (delta: 202.4MB). Free memory was 175.5MB in the beginning and 349.5MB in the end (delta: -174.1MB). Peak memory consumption was 29.3MB. Max. memory is 8.0GB. [2023-12-16 19:25:48,314 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 160.4MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 204.24ms. Allocated memory is still 263.2MB. Free memory was 211.1MB in the beginning and 199.1MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.41ms. Allocated memory is still 263.2MB. Free memory was 199.1MB in the beginning and 196.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.59ms. Allocated memory is still 263.2MB. Free memory was 196.0MB in the beginning and 193.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 334.11ms. Allocated memory is still 263.2MB. Free memory was 193.9MB in the beginning and 176.0MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 76288.56ms. Allocated memory was 263.2MB in the beginning and 465.6MB in the end (delta: 202.4MB). Free memory was 175.5MB in the beginning and 349.5MB in the end (delta: -174.1MB). Peak memory consumption was 29.3MB. 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: 29]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 29). Cancelled while NwaCegarLoop was analyzing trace of length 83 with TraceHistMax 8,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 76.2s, OverallIterations: 10, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 26.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 1866 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1851 mSDsluCounter, 1791 SdHoareTripleChecker+Invalid, 6.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1567 mSDsCounter, 364 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2614 IncrementalHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 364 mSolverCounterUnsat, 224 mSDtfsCounter, 2614 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 579 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5028 ImplicationChecksByTransitivity, 21.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=251occurred in iteration=9, InterpolantAutomatonStates: 194, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 190 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 473 ConstructedInterpolants, 14 QuantifiedInterpolants, 7430 SizeOfPredicates, 131 NumberOfNonLiveVariables, 1024 ConjunctsInSsa, 365 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 257/412 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