/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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-66.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:05:46,356 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:05:46,432 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 20:05:46,434 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:05:46,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:05:46,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:05:46,462 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:05:46,462 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:05:46,462 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:05:46,462 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:05:46,463 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:05:46,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:05:46,463 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:05:46,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:05:46,464 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:05:46,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:05:46,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:05:46,469 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:05:46,469 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:05:46,469 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:05:46,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:05:46,471 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:05:46,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:05:46,471 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:05:46,471 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:05:46,471 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:05:46,471 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:05:46,471 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:05:46,472 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:05:46,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:05:46,473 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:05:46,473 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:05:46,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:05:46,473 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:05:46,473 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:05:46,473 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:05:46,473 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:05:46,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:05:46,474 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:05:46,474 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:05:46,474 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:05:46,474 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:05:46,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:05:46,475 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:05:46,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:05:46,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:05:46,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:05:46,709 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:05:46,709 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:05:46,710 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-66.i [2023-12-15 20:05:47,731 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:05:47,915 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:05:47,915 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-66.i [2023-12-15 20:05:47,923 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b24c70e0/da8d3876e9604f18be28e8738a54c23c/FLAGe28233b33 [2023-12-15 20:05:47,933 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b24c70e0/da8d3876e9604f18be28e8738a54c23c [2023-12-15 20:05:47,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:05:47,936 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:05:47,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:05:47,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:05:47,940 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:05:47,940 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:05:47" (1/1) ... [2023-12-15 20:05:47,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dbac8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:05:47, skipping insertion in model container [2023-12-15 20:05:47,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:05:47" (1/1) ... [2023-12-15 20:05:47,974 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:05:48,089 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-66.i[915,928] [2023-12-15 20:05:48,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:05:48,154 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:05:48,165 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-66.i[915,928] [2023-12-15 20:05:48,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:05:48,224 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:05:48,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:05:48 WrapperNode [2023-12-15 20:05:48,225 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:05:48,228 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:05:48,228 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:05:48,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:05:48,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:05:48" (1/1) ... [2023-12-15 20:05:48,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:05:48" (1/1) ... [2023-12-15 20:05:48,277 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 253 [2023-12-15 20:05:48,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:05:48,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:05:48,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:05:48,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:05:48,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:05:48" (1/1) ... [2023-12-15 20:05:48,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:05:48" (1/1) ... [2023-12-15 20:05:48,291 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:05:48" (1/1) ... [2023-12-15 20:05:48,305 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]. [2023-12-15 20:05:48,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:05:48" (1/1) ... [2023-12-15 20:05:48,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:05:48" (1/1) ... [2023-12-15 20:05:48,312 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:05:48" (1/1) ... [2023-12-15 20:05:48,315 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:05:48" (1/1) ... [2023-12-15 20:05:48,316 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:05:48" (1/1) ... [2023-12-15 20:05:48,317 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:05:48" (1/1) ... [2023-12-15 20:05:48,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:05:48,320 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:05:48,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:05:48,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:05:48,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:05:48" (1/1) ... [2023-12-15 20:05:48,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:05:48,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:05:48,344 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) [2023-12-15 20:05:48,372 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 [2023-12-15 20:05:48,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:05:48,379 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:05:48,379 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:05:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:05:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:05:48,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:05:48,470 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:05:48,473 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:05:48,769 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:05:48,796 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:05:48,796 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:05:48,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:05:48 BoogieIcfgContainer [2023-12-15 20:05:48,796 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:05:48,798 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:05:48,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:05:48,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:05:48,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:05:47" (1/3) ... [2023-12-15 20:05:48,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1e394d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:05:48, skipping insertion in model container [2023-12-15 20:05:48,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:05:48" (2/3) ... [2023-12-15 20:05:48,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1e394d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:05:48, skipping insertion in model container [2023-12-15 20:05:48,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:05:48" (3/3) ... [2023-12-15 20:05:48,803 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-66.i [2023-12-15 20:05:48,816 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:05:48,816 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:05:48,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:05:48,856 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;@1e2402f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:05:48,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:05:48,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 62 states have (on average 1.4516129032258065) internal successors, (90), 63 states have internal predecessors, (90), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-15 20:05:48,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-15 20:05:48,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:05:48,926 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:05:48,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:05:48,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:05:48,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1360282986, now seen corresponding path program 1 times [2023-12-15 20:05:48,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:05:48,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091711142] [2023-12-15 20:05:48,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:48,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:05:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:05:49,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:05:49,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091711142] [2023-12-15 20:05:49,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:05:49,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94413390] [2023-12-15 20:05:49,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:49,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:05:49,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:05:49,224 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) [2023-12-15 20:05:49,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 20:05:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:05:49,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:05:49,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:05:49,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2023-12-15 20:05:49,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:05:49,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94413390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:05:49,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:05:49,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:05:49,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029816924] [2023-12-15 20:05:49,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:05:49,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:05:49,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:05:49,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:05:49,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:05:49,554 INFO L87 Difference]: Start difference. First operand has 109 states, 62 states have (on average 1.4516129032258065) internal successors, (90), 63 states have internal predecessors, (90), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-15 20:05:49,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:05:49,596 INFO L93 Difference]: Finished difference Result 215 states and 398 transitions. [2023-12-15 20:05:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:05:49,598 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) Word has length 267 [2023-12-15 20:05:49,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:05:49,603 INFO L225 Difference]: With dead ends: 215 [2023-12-15 20:05:49,604 INFO L226 Difference]: Without dead ends: 107 [2023-12-15 20:05:49,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:05:49,609 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:05:49,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:05:49,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-15 20:05:49,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-12-15 20:05:49,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 61 states have (on average 1.3934426229508197) internal successors, (85), 61 states have internal predecessors, (85), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-15 20:05:49,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 173 transitions. [2023-12-15 20:05:49,646 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 173 transitions. Word has length 267 [2023-12-15 20:05:49,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:05:49,646 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 173 transitions. [2023-12-15 20:05:49,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-15 20:05:49,646 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 173 transitions. [2023-12-15 20:05:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-15 20:05:49,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:05:49,649 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:05:49,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 20:05:49,854 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 [2023-12-15 20:05:49,855 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:05:49,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:05:49,855 INFO L85 PathProgramCache]: Analyzing trace with hash -349916634, now seen corresponding path program 1 times [2023-12-15 20:05:49,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:05:49,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229455675] [2023-12-15 20:05:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:49,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:05:49,925 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:05:49,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1847171788] [2023-12-15 20:05:49,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:49,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:05:49,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:05:49,930 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) [2023-12-15 20:05:49,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 20:05:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:05:50,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:05:50,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:05:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-12-15 20:05:50,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:05:50,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:05:50,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229455675] [2023-12-15 20:05:50,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:05:50,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847171788] [2023-12-15 20:05:50,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847171788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:05:50,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:05:50,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:05:50,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439905808] [2023-12-15 20:05:50,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:05:50,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:05:50,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:05:50,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:05:50,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:05:50,201 INFO L87 Difference]: Start difference. First operand 107 states and 173 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-15 20:05:50,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:05:50,272 INFO L93 Difference]: Finished difference Result 318 states and 515 transitions. [2023-12-15 20:05:50,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:05:50,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 267 [2023-12-15 20:05:50,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:05:50,283 INFO L225 Difference]: With dead ends: 318 [2023-12-15 20:05:50,284 INFO L226 Difference]: Without dead ends: 212 [2023-12-15 20:05:50,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:05:50,289 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 162 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:05:50,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 470 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:05:50,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-15 20:05:50,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2023-12-15 20:05:50,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 119 states have (on average 1.3529411764705883) internal successors, (161), 119 states have internal predecessors, (161), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-15 20:05:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 337 transitions. [2023-12-15 20:05:50,338 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 337 transitions. Word has length 267 [2023-12-15 20:05:50,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:05:50,340 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 337 transitions. [2023-12-15 20:05:50,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-15 20:05:50,340 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 337 transitions. [2023-12-15 20:05:50,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-15 20:05:50,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:05:50,343 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:05:50,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 20:05:50,551 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 [2023-12-15 20:05:50,551 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:05:50,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:05:50,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1425090728, now seen corresponding path program 1 times [2023-12-15 20:05:50,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:05:50,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556421775] [2023-12-15 20:05:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:50,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:05:50,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:05:50,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165253708] [2023-12-15 20:05:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:50,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:05:50,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:05:50,645 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) [2023-12-15 20:05:50,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 20:05:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:05:50,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 20:05:50,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:05:51,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-12-15 20:05:51,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:05:51,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:05:51,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556421775] [2023-12-15 20:05:51,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:05:51,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165253708] [2023-12-15 20:05:51,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165253708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:05:51,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:05:51,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:05:51,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024118679] [2023-12-15 20:05:51,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:05:51,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:05:51,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:05:51,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:05:51,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:05:51,425 INFO L87 Difference]: Start difference. First operand 210 states and 337 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-15 20:05:51,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:05:51,657 INFO L93 Difference]: Finished difference Result 642 states and 1019 transitions. [2023-12-15 20:05:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 20:05:51,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 267 [2023-12-15 20:05:51,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:05:51,660 INFO L225 Difference]: With dead ends: 642 [2023-12-15 20:05:51,661 INFO L226 Difference]: Without dead ends: 433 [2023-12-15 20:05:51,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:05:51,662 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 58 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:05:51,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 469 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:05:51,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-12-15 20:05:51,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 428. [2023-12-15 20:05:51,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 241 states have (on average 1.3236514522821576) internal successors, (319), 242 states have internal predecessors, (319), 180 states have call successors, (180), 6 states have call predecessors, (180), 6 states have return successors, (180), 179 states have call predecessors, (180), 180 states have call successors, (180) [2023-12-15 20:05:51,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 679 transitions. [2023-12-15 20:05:51,720 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 679 transitions. Word has length 267 [2023-12-15 20:05:51,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:05:51,722 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 679 transitions. [2023-12-15 20:05:51,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-15 20:05:51,722 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 679 transitions. [2023-12-15 20:05:51,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-15 20:05:51,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:05:51,724 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:05:51,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 20:05:51,929 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 [2023-12-15 20:05:51,931 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:05:51,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:05:51,932 INFO L85 PathProgramCache]: Analyzing trace with hash 615744102, now seen corresponding path program 1 times [2023-12-15 20:05:51,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:05:51,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101138087] [2023-12-15 20:05:51,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:51,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:05:51,983 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:05:51,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771169081] [2023-12-15 20:05:51,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:51,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:05:51,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:05:52,002 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) [2023-12-15 20:05:52,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 20:05:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:05:52,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 20:05:52,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:05:52,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 675 proven. 117 refuted. 0 times theorem prover too weak. 2992 trivial. 0 not checked. [2023-12-15 20:05:52,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:05:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 12 proven. 117 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2023-12-15 20:05:52,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:05:52,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101138087] [2023-12-15 20:05:52,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:05:52,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771169081] [2023-12-15 20:05:52,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771169081] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:05:52,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:05:52,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-15 20:05:52,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052331900] [2023-12-15 20:05:52,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:05:52,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:05:52,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:05:52,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:05:52,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:05:52,936 INFO L87 Difference]: Start difference. First operand 428 states and 679 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 4 states have call successors, (88), 3 states have call predecessors, (88), 5 states have return successors, (88), 4 states have call predecessors, (88), 4 states have call successors, (88) [2023-12-15 20:05:53,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:05:53,414 INFO L93 Difference]: Finished difference Result 944 states and 1468 transitions. [2023-12-15 20:05:53,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 20:05:53,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 4 states have call successors, (88), 3 states have call predecessors, (88), 5 states have return successors, (88), 4 states have call predecessors, (88), 4 states have call successors, (88) Word has length 267 [2023-12-15 20:05:53,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:05:53,419 INFO L225 Difference]: With dead ends: 944 [2023-12-15 20:05:53,419 INFO L226 Difference]: Without dead ends: 611 [2023-12-15 20:05:53,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-15 20:05:53,421 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 251 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:05:53,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 490 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:05:53,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-12-15 20:05:53,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 580. [2023-12-15 20:05:53,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 335 states have (on average 1.31044776119403) internal successors, (439), 338 states have internal predecessors, (439), 232 states have call successors, (232), 12 states have call predecessors, (232), 12 states have return successors, (232), 229 states have call predecessors, (232), 232 states have call successors, (232) [2023-12-15 20:05:53,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 903 transitions. [2023-12-15 20:05:53,482 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 903 transitions. Word has length 267 [2023-12-15 20:05:53,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:05:53,482 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 903 transitions. [2023-12-15 20:05:53,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 4 states have call successors, (88), 3 states have call predecessors, (88), 5 states have return successors, (88), 4 states have call predecessors, (88), 4 states have call successors, (88) [2023-12-15 20:05:53,483 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 903 transitions. [2023-12-15 20:05:53,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-15 20:05:53,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:05:53,485 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:05:53,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 20:05:53,690 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 [2023-12-15 20:05:53,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:05:53,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:05:53,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1050981212, now seen corresponding path program 1 times [2023-12-15 20:05:53,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:05:53,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725539033] [2023-12-15 20:05:53,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:53,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:05:53,733 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:05:53,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873646170] [2023-12-15 20:05:53,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:05:53,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:05:53,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:05:53,735 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) [2023-12-15 20:05:53,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 20:05:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:05:53,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-15 20:05:53,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 20:06:41,060 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:06:41,060 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 [2023-12-15 20:06:42,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 20:06:42,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0