/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench/divbin2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 18:51:04,157 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 18:51:04,223 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 18:51:04,228 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 18:51:04,228 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 18:51:04,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 18:51:04,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 18:51:04,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 18:51:04,251 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 18:51:04,254 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 18:51:04,254 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 18:51:04,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 18:51:04,255 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 18:51:04,255 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 18:51:04,255 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 18:51:04,255 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 18:51:04,255 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 18:51:04,256 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 18:51:04,256 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 18:51:04,256 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 18:51:04,256 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 18:51:04,256 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 18:51:04,257 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 18:51:04,257 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 18:51:04,257 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 18:51:04,257 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 18:51:04,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 18:51:04,257 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 18:51:04,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 18:51:04,258 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 18:51:04,258 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 18:51:04,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 18:51:04,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 18:51:04,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 18:51:04,259 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 18:51:04,259 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 18:51:04,259 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 18:51:04,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 18:51:04,259 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 18:51:04,260 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 18:51:04,260 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 18:51:04,260 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 18:51:04,260 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 18:51:04,260 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 18:51:04,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 18:51:04,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 18:51:04,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 18:51:04,465 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 18:51:04,465 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 18:51:04,465 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/divbin2.i [2023-12-19 18:51:05,486 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 18:51:05,607 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 18:51:05,607 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/divbin2.i [2023-12-19 18:51:05,612 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38c0d6aa9/2adeb2bf67f4463f8b65e4641bb16d66/FLAG925d97614 [2023-12-19 18:51:05,620 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38c0d6aa9/2adeb2bf67f4463f8b65e4641bb16d66 [2023-12-19 18:51:05,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 18:51:05,623 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 18:51:05,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 18:51:05,623 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 18:51:05,628 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 18:51:05,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:51:05" (1/1) ... [2023-12-19 18:51:05,629 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f1f5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:05, skipping insertion in model container [2023-12-19 18:51:05,629 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:51:05" (1/1) ... [2023-12-19 18:51:05,644 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 18:51:05,754 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/divbin2.i[951,964] [2023-12-19 18:51:05,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 18:51:05,767 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 18:51:05,776 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/divbin2.i[951,964] [2023-12-19 18:51:05,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 18:51:05,787 INFO L206 MainTranslator]: Completed translation [2023-12-19 18:51:05,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:05 WrapperNode [2023-12-19 18:51:05,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 18:51:05,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 18:51:05,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 18:51:05,789 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 18:51:05,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:05" (1/1) ... [2023-12-19 18:51:05,796 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:05" (1/1) ... [2023-12-19 18:51:05,806 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2023-12-19 18:51:05,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 18:51:05,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 18:51:05,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 18:51:05,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 18:51:05,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:05" (1/1) ... [2023-12-19 18:51:05,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:05" (1/1) ... [2023-12-19 18:51:05,814 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:05" (1/1) ... [2023-12-19 18:51:05,819 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 18:51:05,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:05" (1/1) ... [2023-12-19 18:51:05,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:05" (1/1) ... [2023-12-19 18:51:05,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:05" (1/1) ... [2023-12-19 18:51:05,823 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:05" (1/1) ... [2023-12-19 18:51:05,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:05" (1/1) ... [2023-12-19 18:51:05,824 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:05" (1/1) ... [2023-12-19 18:51:05,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 18:51:05,825 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 18:51:05,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 18:51:05,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 18:51:05,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:05" (1/1) ... [2023-12-19 18:51:05,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 18:51:05,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:51:05,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 18:51:05,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 18:51:05,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 18:51:05,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 18:51:05,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 18:51:05,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 18:51:05,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-19 18:51:05,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-19 18:51:05,912 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 18:51:05,914 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 18:51:06,004 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 18:51:06,018 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 18:51:06,018 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 18:51:06,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:51:06 BoogieIcfgContainer [2023-12-19 18:51:06,019 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 18:51:06,020 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 18:51:06,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 18:51:06,022 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 18:51:06,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:51:05" (1/3) ... [2023-12-19 18:51:06,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189eb235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:51:06, skipping insertion in model container [2023-12-19 18:51:06,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:05" (2/3) ... [2023-12-19 18:51:06,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189eb235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:51:06, skipping insertion in model container [2023-12-19 18:51:06,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:51:06" (3/3) ... [2023-12-19 18:51:06,024 INFO L112 eAbstractionObserver]: Analyzing ICFG divbin2.i [2023-12-19 18:51:06,037 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 18:51:06,037 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 18:51:06,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 18:51:06,069 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;@5cbf536f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 18:51:06,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 18:51:06,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 states have internal predecessors, (20), 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) [2023-12-19 18:51:06,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-19 18:51:06,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:51:06,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:51:06,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:51:06,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:51:06,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1046218469, now seen corresponding path program 1 times [2023-12-19 18:51:06,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:51:06,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864627931] [2023-12-19 18:51:06,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:51:06,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:51:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:51:06,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:51:06,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864627931] [2023-12-19 18:51:06,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 18:51:06,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128155551] [2023-12-19 18:51:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:51:06,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:51:06,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:51:06,152 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:51:06,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 18:51:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:51:06,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 18:51:06,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:51:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:51:06,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 18:51:06,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128155551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:51:06,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:51:06,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 18:51:06,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200836411] [2023-12-19 18:51:06,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:51:06,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 18:51:06,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:51:06,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 18:51:06,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 18:51:06,250 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 states have internal predecessors, (20), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:51:06,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:51:06,275 INFO L93 Difference]: Finished difference Result 29 states and 44 transitions. [2023-12-19 18:51:06,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 18:51:06,277 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-19 18:51:06,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:51:06,282 INFO L225 Difference]: With dead ends: 29 [2023-12-19 18:51:06,282 INFO L226 Difference]: Without dead ends: 14 [2023-12-19 18:51:06,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 18:51:06,289 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:51:06,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:51:06,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-19 18:51:06,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-19 18:51:06,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-19 18:51:06,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2023-12-19 18:51:06,316 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 7 [2023-12-19 18:51:06,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:51:06,317 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2023-12-19 18:51:06,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:51:06,317 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2023-12-19 18:51:06,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-19 18:51:06,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:51:06,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:51:06,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 18:51:06,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 18:51:06,524 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:51:06,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:51:06,526 INFO L85 PathProgramCache]: Analyzing trace with hash -336588208, now seen corresponding path program 1 times [2023-12-19 18:51:06,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:51:06,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804932456] [2023-12-19 18:51:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:51:06,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:51:06,540 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 18:51:06,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028184419] [2023-12-19 18:51:06,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:51:06,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:51:06,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:51:06,545 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:51:06,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 18:51:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:51:06,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 18:51:06,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:51:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:51:06,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 18:51:06,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:51:06,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804932456] [2023-12-19 18:51:06,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 18:51:06,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028184419] [2023-12-19 18:51:06,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028184419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:51:06,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:51:06,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 18:51:06,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592803] [2023-12-19 18:51:06,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:51:06,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 18:51:06,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:51:06,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 18:51:06,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 18:51:06,695 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:51:06,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:51:06,760 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2023-12-19 18:51:06,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 18:51:06,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-19 18:51:06,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:51:06,762 INFO L225 Difference]: With dead ends: 26 [2023-12-19 18:51:06,762 INFO L226 Difference]: Without dead ends: 23 [2023-12-19 18:51:06,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 18:51:06,765 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:51:06,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 34 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:51:06,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-19 18:51:06,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-19 18:51:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 18:51:06,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-19 18:51:06,775 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 8 [2023-12-19 18:51:06,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:51:06,776 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-19 18:51:06,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:51:06,776 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-19 18:51:06,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-19 18:51:06,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:51:06,777 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:51:06,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 18:51:06,985 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,SelfDestructingSolverStorable1 [2023-12-19 18:51:06,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:51:06,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:51:06,986 INFO L85 PathProgramCache]: Analyzing trace with hash -475727605, now seen corresponding path program 1 times [2023-12-19 18:51:06,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:51:06,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21460255] [2023-12-19 18:51:06,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:51:06,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:51:06,997 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 18:51:06,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057318184] [2023-12-19 18:51:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:51:06,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:51:06,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:51:06,999 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:51:07,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 18:51:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:51:07,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 18:51:07,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:51:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 18:51:07,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 18:51:07,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:51:07,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21460255] [2023-12-19 18:51:07,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 18:51:07,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057318184] [2023-12-19 18:51:07,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057318184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:51:07,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:51:07,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 18:51:07,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034825944] [2023-12-19 18:51:07,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:51:07,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 18:51:07,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:51:07,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 18:51:07,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 18:51:07,104 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-12-19 18:51:07,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:51:07,143 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2023-12-19 18:51:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 18:51:07,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 3 states have internal predecessors, (8), 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 [2023-12-19 18:51:07,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:51:07,145 INFO L225 Difference]: With dead ends: 34 [2023-12-19 18:51:07,145 INFO L226 Difference]: Without dead ends: 31 [2023-12-19 18:51:07,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 18:51:07,149 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:51:07,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:51:07,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-19 18:51:07,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2023-12-19 18:51:07,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 18:51:07,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-12-19 18:51:07,159 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 10 [2023-12-19 18:51:07,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:51:07,159 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-12-19 18:51:07,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-12-19 18:51:07,159 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-12-19 18:51:07,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-19 18:51:07,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:51:07,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:51:07,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 18:51:07,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:51:07,365 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:51:07,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:51:07,366 INFO L85 PathProgramCache]: Analyzing trace with hash 895535107, now seen corresponding path program 1 times [2023-12-19 18:51:07,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:51:07,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532234256] [2023-12-19 18:51:07,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:51:07,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:51:07,372 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 18:51:07,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725448219] [2023-12-19 18:51:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:51:07,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:51:07,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:51:07,376 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:51:07,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 18:51:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:51:07,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 18:51:07,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:51:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:51:07,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 18:51:07,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:51:07,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532234256] [2023-12-19 18:51:07,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 18:51:07,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725448219] [2023-12-19 18:51:07,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725448219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 18:51:07,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 18:51:07,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 18:51:07,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558311957] [2023-12-19 18:51:07,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 18:51:07,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 18:51:07,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:51:07,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 18:51:07,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 18:51:07,429 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-12-19 18:51:07,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:51:07,441 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2023-12-19 18:51:07,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 18:51:07,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16 [2023-12-19 18:51:07,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:51:07,442 INFO L225 Difference]: With dead ends: 46 [2023-12-19 18:51:07,442 INFO L226 Difference]: Without dead ends: 24 [2023-12-19 18:51:07,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 18:51:07,443 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:51:07,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 18:51:07,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-19 18:51:07,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-19 18:51:07,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 18:51:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-12-19 18:51:07,447 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2023-12-19 18:51:07,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:51:07,447 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-12-19 18:51:07,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-12-19 18:51:07,447 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-12-19 18:51:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-19 18:51:07,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:51:07,448 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:51:07,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 18:51:07,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:51:07,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:51:07,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:51:07,653 INFO L85 PathProgramCache]: Analyzing trace with hash 46973886, now seen corresponding path program 1 times [2023-12-19 18:51:07,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:51:07,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192439609] [2023-12-19 18:51:07,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:51:07,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:51:07,674 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 18:51:07,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720964669] [2023-12-19 18:51:07,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:51:07,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:51:07,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:51:07,705 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:51:07,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 18:51:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:51:07,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 18:51:07,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:51:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:51:07,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:51:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:51:11,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:51:11,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192439609] [2023-12-19 18:51:11,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 18:51:11,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720964669] [2023-12-19 18:51:11,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720964669] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:51:11,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 18:51:11,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-19 18:51:11,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516388115] [2023-12-19 18:51:11,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 18:51:11,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 18:51:11,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:51:11,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 18:51:11,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-12-19 18:51:11,375 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 14 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 18:51:18,444 WARN L293 SmtUtils]: Spent 6.53s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 18:51:20,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:51:35,542 WARN L293 SmtUtils]: Spent 14.21s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 18:51:43,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:51:48,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:51:48,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:51:48,626 INFO L93 Difference]: Finished difference Result 86 states and 110 transitions. [2023-12-19 18:51:48,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 18:51:48,626 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 14 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-12-19 18:51:48,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:51:48,627 INFO L225 Difference]: With dead ends: 86 [2023-12-19 18:51:48,627 INFO L226 Difference]: Without dead ends: 65 [2023-12-19 18:51:48,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2023-12-19 18:51:48,628 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-19 18:51:48,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 91 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 135 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2023-12-19 18:51:48,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-19 18:51:48,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2023-12-19 18:51:48,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 47 states have internal predecessors, (57), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 18:51:48,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2023-12-19 18:51:48,641 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 18 [2023-12-19 18:51:48,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:51:48,641 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2023-12-19 18:51:48,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 14 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 18:51:48,641 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2023-12-19 18:51:48,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-19 18:51:48,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:51:48,642 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:51:48,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 18:51:48,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:51:48,847 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:51:48,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:51:48,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1373333103, now seen corresponding path program 2 times [2023-12-19 18:51:48,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:51:48,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835919419] [2023-12-19 18:51:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:51:48,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:51:48,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 18:51:48,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350695850] [2023-12-19 18:51:48,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 18:51:48,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:51:48,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:51:48,861 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:51:48,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 18:51:48,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 18:51:48,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:51:48,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 18:51:48,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:51:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:51:49,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:51:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:51:54,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:51:54,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835919419] [2023-12-19 18:51:54,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 18:51:54,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350695850] [2023-12-19 18:51:54,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350695850] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:51:54,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 18:51:54,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2023-12-19 18:51:54,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705536390] [2023-12-19 18:51:54,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 18:51:54,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 18:51:54,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:51:54,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 18:51:54,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2023-12-19 18:51:54,912 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 19 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 18:52:58,403 WARN L293 SmtUtils]: Spent 58.60s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 18:53:02,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:53:06,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:53:09,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:53:33,216 WARN L293 SmtUtils]: Spent 14.62s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 18:53:51,329 WARN L293 SmtUtils]: Spent 11.00s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 18:54:03,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:54:14,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:54:15,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:54:21,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:54:25,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:54:28,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:54:32,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:54:35,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:54:39,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:54:49,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:54:51,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:54:56,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:55:00,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:55:02,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:55:06,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:55:10,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:55:14,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:55:16,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:55:18,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:55:23,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:55:27,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:55:32,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:55:36,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:55:38,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:55:40,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:55:43,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:56:38,584 WARN L293 SmtUtils]: Spent 38.14s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 18:56:40,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:56:43,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 18:56:44,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:56:44,691 INFO L93 Difference]: Finished difference Result 165 states and 217 transitions. [2023-12-19 18:56:44,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 18:56:44,693 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 19 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-12-19 18:56:44,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:56:44,695 INFO L225 Difference]: With dead ends: 165 [2023-12-19 18:56:44,695 INFO L226 Difference]: Without dead ends: 141 [2023-12-19 18:56:44,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 181.1s TimeCoverageRelationStatistics Valid=267, Invalid=721, Unknown=4, NotChecked=0, Total=992 [2023-12-19 18:56:44,696 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 78 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 51 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113.4s IncrementalHoareTripleChecker+Time [2023-12-19 18:56:44,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 272 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 433 Invalid, 16 Unknown, 0 Unchecked, 113.4s Time] [2023-12-19 18:56:44,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-19 18:56:44,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 121. [2023-12-19 18:56:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 93 states have (on average 1.2688172043010753) internal successors, (118), 98 states have internal predecessors, (118), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (19), 15 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 18:56:44,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2023-12-19 18:56:44,723 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 24 [2023-12-19 18:56:44,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:56:44,723 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2023-12-19 18:56:44,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 19 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 18:56:44,723 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2023-12-19 18:56:44,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-19 18:56:44,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:56:44,724 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-19 18:56:44,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 18:56:44,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:56:44,932 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:56:44,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:56:44,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1234949263, now seen corresponding path program 3 times [2023-12-19 18:56:44,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:56:44,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644236065] [2023-12-19 18:56:44,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:56:44,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:56:44,940 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 18:56:44,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061521898] [2023-12-19 18:56:44,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 18:56:44,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:56:44,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:56:44,941 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:56:44,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 18:57:34,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-19 18:57:34,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:57:34,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 18:57:34,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:57:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 18:57:34,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:57:35,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 18:57:35,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:57:35,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644236065] [2023-12-19 18:57:35,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 18:57:35,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061521898] [2023-12-19 18:57:35,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061521898] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:57:35,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 18:57:35,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2023-12-19 18:57:35,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995558746] [2023-12-19 18:57:35,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 18:57:35,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 18:57:35,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:57:35,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 18:57:35,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 18:57:35,059 INFO L87 Difference]: Start difference. First operand 121 states and 157 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-19 18:57:35,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:57:35,245 INFO L93 Difference]: Finished difference Result 142 states and 184 transitions. [2023-12-19 18:57:35,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 18:57:35,246 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2023-12-19 18:57:35,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:57:35,249 INFO L225 Difference]: With dead ends: 142 [2023-12-19 18:57:35,250 INFO L226 Difference]: Without dead ends: 112 [2023-12-19 18:57:35,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 18:57:35,252 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:57:35,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 72 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 18:57:35,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-19 18:57:35,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 103. [2023-12-19 18:57:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 80 states have (on average 1.2625) internal successors, (101), 84 states have internal predecessors, (101), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-19 18:57:35,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 132 transitions. [2023-12-19 18:57:35,287 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 132 transitions. Word has length 26 [2023-12-19 18:57:35,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:57:35,287 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 132 transitions. [2023-12-19 18:57:35,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-19 18:57:35,288 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 132 transitions. [2023-12-19 18:57:35,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-19 18:57:35,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:57:35,292 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-12-19 18:57:35,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 18:57:35,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:57:35,505 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:57:35,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:57:35,505 INFO L85 PathProgramCache]: Analyzing trace with hash -114511139, now seen corresponding path program 4 times [2023-12-19 18:57:35,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:57:35,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143079774] [2023-12-19 18:57:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:57:35,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:57:35,513 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 18:57:35,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244668442] [2023-12-19 18:57:35,513 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 18:57:35,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:57:35,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:57:35,514 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:57:35,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 18:57:35,641 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 18:57:35,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:57:35,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-19 18:57:35,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:57:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 18:57:35,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:57:52,121 WARN L293 SmtUtils]: Spent 5.56s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 18:58:23,833 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 18:58:31,852 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 18:58:39,879 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 18:58:43,903 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse1 (mod |c_ULTIMATE.start_main_~b~0#1| 1073741824)) (.cse2 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (= .cse0 (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* .cse1 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) (< .cse2 (mod |c_ULTIMATE.start_main_~b~0#1| 4294967296)) (not (= (mod (+ (* |c_ULTIMATE.start_main_~b~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse0)) (< (* .cse1 4) (+ .cse2 1)))) is different from true [2023-12-19 18:58:56,018 WARN L293 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 18:59:08,308 WARN L293 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 18:59:16,331 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 18:59:28,514 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 18:59:36,705 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse2 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse0 (mod |c_ULTIMATE.start_main_~b~0#1| 536870912)) (.cse1 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (< (* 8 .cse0) (+ .cse1 1)) (not (= .cse2 (mod (+ (* 8 |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296))) (= .cse2 (mod (+ (* 8 .cse0 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296)) (< .cse1 (* 2 (mod |c_ULTIMATE.start_main_~b~0#1| 2147483648))))) is different from true [2023-12-19 18:59:44,725 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 18:59:56,783 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 19:00:04,803 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 19:00:20,929 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 19:00:28,949 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 19:00:32,980 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~b~0#1| 268435456)) (.cse2 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296)) (.cse1 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296))) (or (= (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* .cse0 16 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) .cse1) (< .cse2 (* (mod |c_ULTIMATE.start_main_~b~0#1| 1073741824) 4)) (< (* .cse0 16) (+ .cse2 1)) (not (= .cse1 (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* 16 |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296))))) is different from true [2023-12-19 19:00:49,313 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 19:00:57,334 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 19:01:05,369 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 19:01:17,420 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 19:01:25,470 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~b~0#1| 134217728)) (.cse2 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296)) (.cse1 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296))) (or (= (mod (+ (* .cse0 32 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse1) (< .cse2 (* 8 (mod |c_ULTIMATE.start_main_~b~0#1| 536870912))) (< (* .cse0 32) (+ .cse2 1)) (not (= (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* 32 |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) .cse1)))) is different from true [2023-12-19 19:01:33,489 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 19:01:45,543 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 19:01:49,727 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 28 not checked. [2023-12-19 19:01:49,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 19:01:49,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143079774] [2023-12-19 19:01:49,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 19:01:49,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244668442] [2023-12-19 19:01:49,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244668442] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 19:01:49,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 19:01:49,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 30 [2023-12-19 19:01:49,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834059441] [2023-12-19 19:01:49,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 19:01:49,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 19:01:49,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 19:01:49,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 19:01:49,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=522, Unknown=5, NotChecked=204, Total=870 [2023-12-19 19:01:49,729 INFO L87 Difference]: Start difference. First operand 103 states and 132 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 28 states have internal predecessors, (53), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-19 19:02:39,454 WARN L293 SmtUtils]: Spent 38.34s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 19:02:43,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:02:48,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:02:52,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:02:56,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:03:00,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:03:33,368 WARN L293 SmtUtils]: Spent 27.25s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 19:03:37,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:03:43,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:03:47,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:03:53,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:03:57,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:04:08,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:04:12,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:04:15,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:04:17,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:04:45,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:04:49,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:04:53,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.61s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:04:58,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:05:02,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:05:06,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:05:10,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:05:14,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:05:18,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:05:20,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:05:22,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:05:27,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:05:31,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:05:35,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:05:36,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:05:41,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 19:05:47,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] Received shutdown request... [2023-12-19 19:05:50,780 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 19:05:50,780 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 19:05:51,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 19:05:51,980 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 [2023-12-19 19:05:52,007 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 [2023-12-19 19:05:52,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 19:05:52,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 148.4s TimeCoverageRelationStatistics Valid=239, Invalid=822, Unknown=11, NotChecked=260, Total=1332 [2023-12-19 19:05:52,009 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 66 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 53 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 400 IncrementalHoareTripleChecker+Unchecked, 128.0s IncrementalHoareTripleChecker+Time [2023-12-19 19:05:52,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 290 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 512 Invalid, 24 Unknown, 400 Unchecked, 128.0s Time] [2023-12-19 19:05:52,010 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 19:05:52,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 19:05:52,010 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (103states) and FLOYD_HOARE automaton (currently 24 states, 30 states before enhancement),while executing Executor. [2023-12-19 19:05:52,015 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2023-12-19 19:05:52,017 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 19:05:52,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 07:05:52 BoogieIcfgContainer [2023-12-19 19:05:52,019 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 19:05:52,019 INFO L158 Benchmark]: Toolchain (without parser) took 886396.90ms. Allocated memory was 205.5MB in the beginning and 286.3MB in the end (delta: 80.7MB). Free memory was 169.2MB in the beginning and 192.9MB in the end (delta: -23.7MB). Peak memory consumption was 58.6MB. Max. memory is 8.0GB. [2023-12-19 19:05:52,019 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 205.5MB. Free memory is still 162.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 19:05:52,020 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.88ms. Allocated memory is still 205.5MB. Free memory was 169.2MB in the beginning and 158.2MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-19 19:05:52,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.66ms. Allocated memory is still 205.5MB. Free memory was 158.2MB in the beginning and 156.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 19:05:52,020 INFO L158 Benchmark]: Boogie Preprocessor took 17.99ms. Allocated memory is still 205.5MB. Free memory was 156.6MB in the beginning and 155.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 19:05:52,020 INFO L158 Benchmark]: RCFGBuilder took 193.76ms. Allocated memory is still 205.5MB. Free memory was 155.0MB in the beginning and 144.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 19:05:52,021 INFO L158 Benchmark]: TraceAbstraction took 885998.92ms. Allocated memory was 205.5MB in the beginning and 286.3MB in the end (delta: 80.7MB). Free memory was 143.5MB in the beginning and 192.9MB in the end (delta: -49.4MB). Peak memory consumption was 32.4MB. Max. memory is 8.0GB. [2023-12-19 19:05:52,026 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 205.5MB. Free memory is still 162.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 164.88ms. Allocated memory is still 205.5MB. Free memory was 169.2MB in the beginning and 158.2MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.66ms. Allocated memory is still 205.5MB. Free memory was 158.2MB in the beginning and 156.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.99ms. Allocated memory is still 205.5MB. Free memory was 156.6MB in the beginning and 155.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 193.76ms. Allocated memory is still 205.5MB. Free memory was 155.0MB in the beginning and 144.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 885998.92ms. Allocated memory was 205.5MB in the beginning and 286.3MB in the end (delta: 80.7MB). Free memory was 143.5MB in the beginning and 192.9MB in the end (delta: -49.4MB). Peak memory consumption was 32.4MB. 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: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was constructing difference of abstraction (103states) and FLOYD_HOARE automaton (currently 24 states, 30 states before enhancement),while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 886.0s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 569.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 mSolverCounterUnknown, 206 SdHoareTripleChecker+Valid, 252.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 188 mSDsluCounter, 830 SdHoareTripleChecker+Invalid, 251.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 400 IncrementalHoareTripleChecker+Unchecked, 711 mSDsCounter, 140 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1215 IncrementalHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 140 mSolverCounterUnsat, 119 mSDtfsCounter, 1215 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 155 SyntacticMatches, 4 SemanticMatches, 103 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 358.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=6, InterpolantAutomatonStates: 67, 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, 7 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 50.1s SatisfiabilityAnalysisTime, 264.2s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 233 ConstructedInterpolants, 0 QuantifiedInterpolants, 2893 SizeOfPredicates, 11 NumberOfNonLiveVariables, 483 ConjunctsInSsa, 151 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 48/194 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