/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-100_file-58.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:42:28,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:42:28,761 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 19:42:28,764 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:42:28,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:42:28,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:42:28,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:42:28,787 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:42:28,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:42:28,789 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:42:28,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:42:28,790 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:42:28,790 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:42:28,794 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:42:28,794 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:42:28,794 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:42:28,794 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:42:28,794 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:42:28,795 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:42:28,795 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:42:28,795 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:42:28,795 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:42:28,795 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:42:28,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:42:28,796 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:42:28,796 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:42:28,796 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:42:28,796 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:42:28,797 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:42:28,797 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:42:28,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:42:28,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:42:28,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:42:28,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:42:28,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:42:28,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:42:28,798 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:42:28,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:42:28,798 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:42:28,798 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:42:28,798 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:42:28,799 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:42:28,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:42:28,799 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:42:28,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:42:28,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:42:28,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:42:28,997 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:42:28,998 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:42:28,998 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-58.i [2023-12-15 19:42:29,976 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:42:30,114 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:42:30,114 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-58.i [2023-12-15 19:42:30,120 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc660d345/a33d9398b1d74415930534b1a7d0be8d/FLAG6617acd8f [2023-12-15 19:42:30,132 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc660d345/a33d9398b1d74415930534b1a7d0be8d [2023-12-15 19:42:30,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:42:30,134 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:42:30,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:42:30,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:42:30,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:42:30,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:42:30" (1/1) ... [2023-12-15 19:42:30,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9ef9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:42:30, skipping insertion in model container [2023-12-15 19:42:30,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:42:30" (1/1) ... [2023-12-15 19:42:30,168 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:42:30,277 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-100_file-58.i[916,929] [2023-12-15 19:42:30,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:42:30,372 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:42:30,380 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-100_file-58.i[916,929] [2023-12-15 19:42:30,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:42:30,431 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:42:30,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:42:30 WrapperNode [2023-12-15 19:42:30,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:42:30,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:42:30,433 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:42:30,433 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:42:30,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:42:30" (1/1) ... [2023-12-15 19:42:30,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:42:30" (1/1) ... [2023-12-15 19:42:30,476 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 308 [2023-12-15 19:42:30,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:42:30,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:42:30,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:42:30,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:42:30,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:42:30" (1/1) ... [2023-12-15 19:42:30,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:42:30" (1/1) ... [2023-12-15 19:42:30,494 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:42:30" (1/1) ... [2023-12-15 19:42:30,508 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 19:42:30,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:42:30" (1/1) ... [2023-12-15 19:42:30,508 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:42:30" (1/1) ... [2023-12-15 19:42:30,532 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:42:30" (1/1) ... [2023-12-15 19:42:30,535 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:42:30" (1/1) ... [2023-12-15 19:42:30,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:42:30" (1/1) ... [2023-12-15 19:42:30,554 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:42:30" (1/1) ... [2023-12-15 19:42:30,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:42:30,561 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:42:30,561 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:42:30,561 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:42:30,562 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:42:30" (1/1) ... [2023-12-15 19:42:30,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:42:30,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:42:30,620 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 19:42:30,653 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 19:42:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:42:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:42:30,661 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:42:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:42:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:42:30,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:42:30,726 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:42:30,728 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:42:31,165 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:42:31,187 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:42:31,187 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:42:31,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:42:31 BoogieIcfgContainer [2023-12-15 19:42:31,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:42:31,189 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:42:31,189 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:42:31,191 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:42:31,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:42:30" (1/3) ... [2023-12-15 19:42:31,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2361d2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:42:31, skipping insertion in model container [2023-12-15 19:42:31,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:42:30" (2/3) ... [2023-12-15 19:42:31,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2361d2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:42:31, skipping insertion in model container [2023-12-15 19:42:31,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:42:31" (3/3) ... [2023-12-15 19:42:31,196 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-58.i [2023-12-15 19:42:31,208 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:42:31,208 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:42:31,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:42:31,261 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;@7047458, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:42:31,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:42:31,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 75 states have (on average 1.5066666666666666) internal successors, (113), 76 states have internal predecessors, (113), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-15 19:42:31,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-15 19:42:31,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:42:31,292 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:31,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:42:31,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:42:31,296 INFO L85 PathProgramCache]: Analyzing trace with hash -767843412, now seen corresponding path program 1 times [2023-12-15 19:42:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:42:31,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168932113] [2023-12-15 19:42:31,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:42:31,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:42:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:42:31,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:42:31,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168932113] [2023-12-15 19:42:31,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:42:31,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288904092] [2023-12-15 19:42:31,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:42:31,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:42:31,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:42:31,536 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 19:42:31,567 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 19:42:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:42:31,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:42:31,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:42:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2023-12-15 19:42:31,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:42:31,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288904092] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:42:31,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:42:31,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:42:31,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459887530] [2023-12-15 19:42:31,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:42:31,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:42:31,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:42:31,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:42:31,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:42:31,819 INFO L87 Difference]: Start difference. First operand has 128 states, 75 states have (on average 1.5066666666666666) internal successors, (113), 76 states have internal predecessors, (113), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-15 19:42:31,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:42:31,865 INFO L93 Difference]: Finished difference Result 253 states and 474 transitions. [2023-12-15 19:42:31,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:42:31,867 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) Word has length 305 [2023-12-15 19:42:31,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:42:31,873 INFO L225 Difference]: With dead ends: 253 [2023-12-15 19:42:31,873 INFO L226 Difference]: Without dead ends: 126 [2023-12-15 19:42:31,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 304 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 19:42:31,878 INFO L413 NwaCegarLoop]: 205 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, 205 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 19:42:31,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 205 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:42:31,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-15 19:42:31,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-12-15 19:42:31,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 74 states have (on average 1.4594594594594594) internal successors, (108), 74 states have internal predecessors, (108), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-15 19:42:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 208 transitions. [2023-12-15 19:42:31,941 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 208 transitions. Word has length 305 [2023-12-15 19:42:31,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:42:31,942 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 208 transitions. [2023-12-15 19:42:31,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2023-12-15 19:42:31,942 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 208 transitions. [2023-12-15 19:42:31,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-15 19:42:31,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:42:31,947 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:31,960 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 19:42:32,158 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 19:42:32,159 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:42:32,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:42:32,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1170138576, now seen corresponding path program 1 times [2023-12-15 19:42:32,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:42:32,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575202396] [2023-12-15 19:42:32,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:42:32,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:42:32,257 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:42:32,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737235854] [2023-12-15 19:42:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:42:32,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:42:32,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:42:32,279 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 19:42:32,323 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 19:42:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:42:32,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:42:32,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:42:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-15 19:42:32,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:42:32,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:42:32,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575202396] [2023-12-15 19:42:32,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:42:32,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737235854] [2023-12-15 19:42:32,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737235854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:42:32,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:42:32,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:42:32,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099689756] [2023-12-15 19:42:32,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:42:32,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:42:32,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:42:32,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:42:32,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:42:32,602 INFO L87 Difference]: Start difference. First operand 126 states and 208 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-15 19:42:32,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:42:32,852 INFO L93 Difference]: Finished difference Result 408 states and 669 transitions. [2023-12-15 19:42:32,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:42:32,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 305 [2023-12-15 19:42:32,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:42:32,861 INFO L225 Difference]: With dead ends: 408 [2023-12-15 19:42:32,862 INFO L226 Difference]: Without dead ends: 283 [2023-12-15 19:42:32,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:42:32,867 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 304 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:42:32,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 523 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:42:32,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-15 19:42:32,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 277. [2023-12-15 19:42:32,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 171 states have (on average 1.4795321637426901) internal successors, (253), 173 states have internal predecessors, (253), 102 states have call successors, (102), 3 states have call predecessors, (102), 3 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-15 19:42:32,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 457 transitions. [2023-12-15 19:42:32,900 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 457 transitions. Word has length 305 [2023-12-15 19:42:32,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:42:32,901 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 457 transitions. [2023-12-15 19:42:32,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-15 19:42:32,901 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 457 transitions. [2023-12-15 19:42:32,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-15 19:42:32,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:42:32,905 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:32,914 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 19:42:33,111 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 19:42:33,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:42:33,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:42:33,113 INFO L85 PathProgramCache]: Analyzing trace with hash 2113711470, now seen corresponding path program 1 times [2023-12-15 19:42:33,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:42:33,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256209210] [2023-12-15 19:42:33,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:42:33,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:42:33,162 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:42:33,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133676690] [2023-12-15 19:42:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:42:33,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:42:33,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:42:33,177 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 19:42:33,227 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 19:42:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:42:33,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:42:33,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:42:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2389 proven. 57 refuted. 0 times theorem prover too weak. 2454 trivial. 0 not checked. [2023-12-15 19:42:33,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:42:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 90 proven. 57 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-12-15 19:42:33,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:42:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256209210] [2023-12-15 19:42:33,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:42:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133676690] [2023-12-15 19:42:33,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133676690] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:42:33,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:42:33,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:42:33,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705900518] [2023-12-15 19:42:33,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:42:33,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:42:33,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:42:33,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:42:33,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:42:33,785 INFO L87 Difference]: Start difference. First operand 277 states and 457 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2023-12-15 19:42:34,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:42:34,048 INFO L93 Difference]: Finished difference Result 410 states and 671 transitions. [2023-12-15 19:42:34,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:42:34,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 305 [2023-12-15 19:42:34,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:42:34,050 INFO L225 Difference]: With dead ends: 410 [2023-12-15 19:42:34,050 INFO L226 Difference]: Without dead ends: 134 [2023-12-15 19:42:34,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 602 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:42:34,051 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 212 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:42:34,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 321 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:42:34,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-15 19:42:34,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2023-12-15 19:42:34,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 77 states have internal predecessors, (110), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-15 19:42:34,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 210 transitions. [2023-12-15 19:42:34,063 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 210 transitions. Word has length 305 [2023-12-15 19:42:34,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:42:34,063 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 210 transitions. [2023-12-15 19:42:34,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2023-12-15 19:42:34,064 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 210 transitions. [2023-12-15 19:42:34,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-15 19:42:34,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:42:34,066 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:34,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:42:34,272 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 19:42:34,273 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:42:34,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:42:34,274 INFO L85 PathProgramCache]: Analyzing trace with hash -300593131, now seen corresponding path program 1 times [2023-12-15 19:42:34,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:42:34,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924027733] [2023-12-15 19:42:34,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:42:34,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:42:34,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:42:34,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94115455] [2023-12-15 19:42:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:42:34,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:42:34,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:42:34,301 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 19:42:34,341 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 19:42:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:42:34,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:42:34,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:42:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-12-15 19:42:34,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:42:34,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:42:34,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924027733] [2023-12-15 19:42:34,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:42:34,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94115455] [2023-12-15 19:42:34,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94115455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:42:34,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:42:34,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:42:34,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221028746] [2023-12-15 19:42:34,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:42:34,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:42:34,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:42:34,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:42:34,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:42:34,480 INFO L87 Difference]: Start difference. First operand 130 states and 210 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-15 19:42:34,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:42:34,603 INFO L93 Difference]: Finished difference Result 335 states and 542 transitions. [2023-12-15 19:42:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:42:34,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 306 [2023-12-15 19:42:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:42:34,605 INFO L225 Difference]: With dead ends: 335 [2023-12-15 19:42:34,605 INFO L226 Difference]: Without dead ends: 206 [2023-12-15 19:42:34,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:42:34,607 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 110 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:42:34,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 639 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:42:34,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-15 19:42:34,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 203. [2023-12-15 19:42:34,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 125 states have (on average 1.456) internal successors, (182), 126 states have internal predecessors, (182), 74 states have call successors, (74), 3 states have call predecessors, (74), 3 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-15 19:42:34,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 330 transitions. [2023-12-15 19:42:34,621 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 330 transitions. Word has length 306 [2023-12-15 19:42:34,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:42:34,622 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 330 transitions. [2023-12-15 19:42:34,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-12-15 19:42:34,623 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 330 transitions. [2023-12-15 19:42:34,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-15 19:42:34,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:42:34,625 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:34,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 19:42:34,830 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 19:42:34,831 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:42:34,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:42:34,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1311710381, now seen corresponding path program 1 times [2023-12-15 19:42:34,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:42:34,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191579355] [2023-12-15 19:42:34,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:42:34,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:42:34,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:42:34,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275058827] [2023-12-15 19:42:34,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:42:34,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:42:34,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:42:34,856 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 19:42:34,881 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 19:42:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:42:35,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 19:42:35,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 19:43:26,186 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 19:43:26,222 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 19:43:27,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 19:43:27,375 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 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown