/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 02:31:30,876 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 02:31:30,936 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 02:31:30,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 02:31:30,939 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 02:31:30,978 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 02:31:30,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 02:31:30,979 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 02:31:30,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 02:31:30,979 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 02:31:30,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 02:31:30,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 02:31:30,980 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 02:31:30,981 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 02:31:30,982 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 02:31:30,982 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 02:31:30,983 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 02:31:30,983 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 02:31:30,983 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 02:31:30,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 02:31:30,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 02:31:30,989 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 02:31:30,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 02:31:30,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 02:31:30,989 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 02:31:30,989 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 02:31:30,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 02:31:30,989 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 02:31:30,990 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 02:31:30,990 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 02:31:30,990 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 02:31:30,990 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 02:31:30,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 02:31:30,990 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 02:31:30,991 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 02:31:30,991 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 02:31:30,991 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 02:31:30,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 02:31:30,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 02:31:30,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 02:31:30,991 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 02:31:30,992 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 02:31:30,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 02:31:30,992 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 02:31:31,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 02:31:31,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 02:31:31,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 02:31:31,152 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 02:31:31,152 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 02:31:31,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-2.i [2023-12-21 02:31:32,192 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 02:31:32,333 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 02:31:32,333 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-2.i [2023-12-21 02:31:32,343 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f79782e4d/a74370f9aaa2408cb87718507e41b18a/FLAG23ba90055 [2023-12-21 02:31:32,354 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f79782e4d/a74370f9aaa2408cb87718507e41b18a [2023-12-21 02:31:32,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 02:31:32,358 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 02:31:32,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 02:31:32,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 02:31:32,362 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 02:31:32,362 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:31:32" (1/1) ... [2023-12-21 02:31:32,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f0c8a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:31:32, skipping insertion in model container [2023-12-21 02:31:32,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:31:32" (1/1) ... [2023-12-21 02:31:32,401 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 02:31:32,495 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_variablewrapping_wrapper-sp_file-2.i[916,929] [2023-12-21 02:31:32,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 02:31:32,541 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 02:31:32,549 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_variablewrapping_wrapper-sp_file-2.i[916,929] [2023-12-21 02:31:32,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 02:31:32,609 INFO L206 MainTranslator]: Completed translation [2023-12-21 02:31:32,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:31:32 WrapperNode [2023-12-21 02:31:32,610 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 02:31:32,611 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 02:31:32,611 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 02:31:32,611 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 02:31:32,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:31:32" (1/1) ... [2023-12-21 02:31:32,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:31:32" (1/1) ... [2023-12-21 02:31:32,671 INFO L138 Inliner]: procedures = 29, calls = 155, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 512 [2023-12-21 02:31:32,673 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 02:31:32,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 02:31:32,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 02:31:32,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 02:31:32,683 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:31:32" (1/1) ... [2023-12-21 02:31:32,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:31:32" (1/1) ... [2023-12-21 02:31:32,689 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:31:32" (1/1) ... [2023-12-21 02:31:32,708 INFO L175 MemorySlicer]: Split 131 memory accesses to 2 slices as follows [2, 129]. 98 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 10]. The 15 writes are split as follows [0, 15]. [2023-12-21 02:31:32,708 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:31:32" (1/1) ... [2023-12-21 02:31:32,708 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:31:32" (1/1) ... [2023-12-21 02:31:32,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:31:32" (1/1) ... [2023-12-21 02:31:32,725 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:31:32" (1/1) ... [2023-12-21 02:31:32,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:31:32" (1/1) ... [2023-12-21 02:31:32,729 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:31:32" (1/1) ... [2023-12-21 02:31:32,732 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 02:31:32,733 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 02:31:32,733 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 02:31:32,733 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 02:31:32,733 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:31:32" (1/1) ... [2023-12-21 02:31:32,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 02:31:32,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:31:32,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 02:31:32,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 02:31:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 02:31:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-12-21 02:31:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-12-21 02:31:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 02:31:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 02:31:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-12-21 02:31:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-12-21 02:31:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 02:31:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 02:31:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-12-21 02:31:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-12-21 02:31:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 02:31:32,818 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 02:31:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 02:31:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 02:31:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 02:31:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 02:31:32,930 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 02:31:32,932 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 02:31:33,407 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 02:31:33,430 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 02:31:33,430 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 02:31:33,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:31:33 BoogieIcfgContainer [2023-12-21 02:31:33,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 02:31:33,432 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 02:31:33,433 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 02:31:33,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 02:31:33,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:31:32" (1/3) ... [2023-12-21 02:31:33,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b435644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:31:33, skipping insertion in model container [2023-12-21 02:31:33,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:31:32" (2/3) ... [2023-12-21 02:31:33,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b435644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:31:33, skipping insertion in model container [2023-12-21 02:31:33,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:31:33" (3/3) ... [2023-12-21 02:31:33,436 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-2.i [2023-12-21 02:31:33,448 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 02:31:33,448 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 02:31:33,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 02:31:33,496 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;@7ffeebd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 02:31:33,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 02:31:33,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 78 states have (on average 1.5) internal successors, (117), 79 states have internal predecessors, (117), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-21 02:31:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 02:31:33,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:31:33,515 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:31:33,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:31:33,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:31:33,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1956631273, now seen corresponding path program 1 times [2023-12-21 02:31:33,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:31:33,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651390196] [2023-12-21 02:31:33,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:33,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:31:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:31:33,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:31:33,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651390196] [2023-12-21 02:31:33,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 02:31:33,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44626918] [2023-12-21 02:31:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:33,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:33,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:31:33,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:31:33,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 02:31:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:31:33,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 02:31:33,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:31:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-21 02:31:33,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:31:33,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44626918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:31:33,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:31:33,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 02:31:33,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275067885] [2023-12-21 02:31:33,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:31:33,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 02:31:33,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:31:33,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 02:31:33,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 02:31:33,981 INFO L87 Difference]: Start difference. First operand has 93 states, 78 states have (on average 1.5) internal successors, (117), 79 states have internal predecessors, (117), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 02:31:34,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:31:34,027 INFO L93 Difference]: Finished difference Result 183 states and 292 transitions. [2023-12-21 02:31:34,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 02:31:34,029 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 95 [2023-12-21 02:31:34,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:31:34,035 INFO L225 Difference]: With dead ends: 183 [2023-12-21 02:31:34,035 INFO L226 Difference]: Without dead ends: 91 [2023-12-21 02:31:34,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 02:31:34,039 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:31:34,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:31:34,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-21 02:31:34,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-21 02:31:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 77 states have (on average 1.4545454545454546) internal successors, (112), 77 states have internal predecessors, (112), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-21 02:31:34,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 136 transitions. [2023-12-21 02:31:34,067 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 136 transitions. Word has length 95 [2023-12-21 02:31:34,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:31:34,068 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 136 transitions. [2023-12-21 02:31:34,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 02:31:34,068 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 136 transitions. [2023-12-21 02:31:34,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 02:31:34,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:31:34,070 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:31:34,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 02:31:34,277 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 [2023-12-21 02:31:34,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:31:34,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:31:34,278 INFO L85 PathProgramCache]: Analyzing trace with hash 283843051, now seen corresponding path program 1 times [2023-12-21 02:31:34,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:31:34,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650784858] [2023-12-21 02:31:34,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:34,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:31:34,335 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:31:34,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987696903] [2023-12-21 02:31:34,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:34,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:34,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:31:34,339 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:31:34,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 02:31:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:31:34,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 02:31:34,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:31:34,512 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-21 02:31:34,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:31:34,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:31:34,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650784858] [2023-12-21 02:31:34,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:31:34,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987696903] [2023-12-21 02:31:34,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987696903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:31:34,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:31:34,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 02:31:34,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240876853] [2023-12-21 02:31:34,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:31:34,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 02:31:34,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:31:34,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 02:31:34,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 02:31:34,515 INFO L87 Difference]: Start difference. First operand 91 states and 136 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:34,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:31:34,552 INFO L93 Difference]: Finished difference Result 182 states and 273 transitions. [2023-12-21 02:31:34,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 02:31:34,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 95 [2023-12-21 02:31:34,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:31:34,557 INFO L225 Difference]: With dead ends: 182 [2023-12-21 02:31:34,557 INFO L226 Difference]: Without dead ends: 92 [2023-12-21 02:31:34,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 02:31:34,558 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:31:34,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 257 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:31:34,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-21 02:31:34,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-12-21 02:31:34,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 78 states have (on average 1.4487179487179487) internal successors, (113), 78 states have internal predecessors, (113), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-21 02:31:34,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 137 transitions. [2023-12-21 02:31:34,565 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 137 transitions. Word has length 95 [2023-12-21 02:31:34,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:31:34,566 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 137 transitions. [2023-12-21 02:31:34,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:34,566 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 137 transitions. [2023-12-21 02:31:34,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 02:31:34,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:31:34,567 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:31:34,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 02:31:34,776 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 [2023-12-21 02:31:34,777 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:31:34,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:31:34,777 INFO L85 PathProgramCache]: Analyzing trace with hash -302962963, now seen corresponding path program 1 times [2023-12-21 02:31:34,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:31:34,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840432296] [2023-12-21 02:31:34,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:34,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:31:34,832 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:31:34,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301999070] [2023-12-21 02:31:34,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:34,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:34,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:31:34,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:31:34,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 02:31:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:31:35,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 02:31:35,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:31:35,049 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-21 02:31:35,049 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:31:35,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:31:35,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840432296] [2023-12-21 02:31:35,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:31:35,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301999070] [2023-12-21 02:31:35,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301999070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:31:35,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:31:35,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:31:35,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515808284] [2023-12-21 02:31:35,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:31:35,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:31:35,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:31:35,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:31:35,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:31:35,053 INFO L87 Difference]: Start difference. First operand 92 states and 137 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 02:31:35,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:31:35,091 INFO L93 Difference]: Finished difference Result 189 states and 282 transitions. [2023-12-21 02:31:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 02:31:35,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 95 [2023-12-21 02:31:35,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:31:35,093 INFO L225 Difference]: With dead ends: 189 [2023-12-21 02:31:35,093 INFO L226 Difference]: Without dead ends: 98 [2023-12-21 02:31:35,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:31:35,094 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 10 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:31:35,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 388 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:31:35,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-21 02:31:35,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2023-12-21 02:31:35,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 80 states have (on average 1.4375) internal successors, (115), 80 states have internal predecessors, (115), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-21 02:31:35,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 139 transitions. [2023-12-21 02:31:35,101 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 139 transitions. Word has length 95 [2023-12-21 02:31:35,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:31:35,101 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 139 transitions. [2023-12-21 02:31:35,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 02:31:35,101 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 139 transitions. [2023-12-21 02:31:35,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 02:31:35,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:31:35,103 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:31:35,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 02:31:35,308 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 [2023-12-21 02:31:35,309 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:31:35,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:31:35,309 INFO L85 PathProgramCache]: Analyzing trace with hash -230576405, now seen corresponding path program 1 times [2023-12-21 02:31:35,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:31:35,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292340596] [2023-12-21 02:31:35,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:35,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:31:35,339 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:31:35,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952037003] [2023-12-21 02:31:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:35,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:35,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:31:35,354 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:31:35,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 02:31:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:31:35,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 02:31:35,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:31:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-21 02:31:35,525 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:31:35,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:31:35,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292340596] [2023-12-21 02:31:35,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:31:35,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952037003] [2023-12-21 02:31:35,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952037003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:31:35,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:31:35,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:31:35,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474828500] [2023-12-21 02:31:35,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:31:35,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:31:35,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:31:35,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:31:35,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:31:35,527 INFO L87 Difference]: Start difference. First operand 94 states and 139 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:35,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:31:35,554 INFO L93 Difference]: Finished difference Result 208 states and 309 transitions. [2023-12-21 02:31:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 02:31:35,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 95 [2023-12-21 02:31:35,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:31:35,555 INFO L225 Difference]: With dead ends: 208 [2023-12-21 02:31:35,555 INFO L226 Difference]: Without dead ends: 115 [2023-12-21 02:31:35,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:31:35,556 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 61 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:31:35,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 392 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:31:35,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-21 02:31:35,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2023-12-21 02:31:35,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 82 states have (on average 1.4268292682926829) internal successors, (117), 82 states have internal predecessors, (117), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-21 02:31:35,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 141 transitions. [2023-12-21 02:31:35,562 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 141 transitions. Word has length 95 [2023-12-21 02:31:35,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:31:35,563 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 141 transitions. [2023-12-21 02:31:35,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 141 transitions. [2023-12-21 02:31:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 02:31:35,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:31:35,564 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:31:35,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 02:31:35,770 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 [2023-12-21 02:31:35,770 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:31:35,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:31:35,771 INFO L85 PathProgramCache]: Analyzing trace with hash -924363622, now seen corresponding path program 1 times [2023-12-21 02:31:35,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:31:35,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582682280] [2023-12-21 02:31:35,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:35,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:31:35,800 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:31:35,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616582264] [2023-12-21 02:31:35,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:35,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:35,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:31:35,802 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:31:35,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 02:31:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:31:35,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 02:31:35,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:31:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-21 02:31:36,007 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:31:36,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:31:36,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582682280] [2023-12-21 02:31:36,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:31:36,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616582264] [2023-12-21 02:31:36,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616582264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:31:36,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:31:36,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 02:31:36,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724492456] [2023-12-21 02:31:36,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:31:36,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 02:31:36,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:31:36,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 02:31:36,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 02:31:36,009 INFO L87 Difference]: Start difference. First operand 96 states and 141 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:36,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:31:36,028 INFO L93 Difference]: Finished difference Result 231 states and 341 transitions. [2023-12-21 02:31:36,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 02:31:36,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 98 [2023-12-21 02:31:36,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:31:36,030 INFO L225 Difference]: With dead ends: 231 [2023-12-21 02:31:36,030 INFO L226 Difference]: Without dead ends: 136 [2023-12-21 02:31:36,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 02:31:36,033 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 53 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:31:36,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 259 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:31:36,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-21 02:31:36,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 112. [2023-12-21 02:31:36,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 98 states have (on average 1.4489795918367347) internal successors, (142), 98 states have internal predecessors, (142), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-21 02:31:36,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 166 transitions. [2023-12-21 02:31:36,049 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 166 transitions. Word has length 98 [2023-12-21 02:31:36,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:31:36,049 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 166 transitions. [2023-12-21 02:31:36,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:36,049 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 166 transitions. [2023-12-21 02:31:36,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 02:31:36,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:31:36,050 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:31:36,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 02:31:36,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:36,256 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:31:36,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:31:36,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1600695660, now seen corresponding path program 1 times [2023-12-21 02:31:36,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:31:36,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368485300] [2023-12-21 02:31:36,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:36,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:31:36,277 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:31:36,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337787586] [2023-12-21 02:31:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:36,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:36,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:31:36,278 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:31:36,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 02:31:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:31:36,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 02:31:36,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:31:37,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:37,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-12-21 02:31:37,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:37,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:37,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:37,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 18 [2023-12-21 02:31:37,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:37,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2023-12-21 02:31:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-21 02:31:37,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:31:37,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:31:37,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368485300] [2023-12-21 02:31:37,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:31:37,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337787586] [2023-12-21 02:31:37,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337787586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:31:37,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:31:37,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:31:37,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822706255] [2023-12-21 02:31:37,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:31:37,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:31:37,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:31:37,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:31:37,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:31:37,372 INFO L87 Difference]: Start difference. First operand 112 states and 166 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:37,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:31:37,896 INFO L93 Difference]: Finished difference Result 309 states and 456 transitions. [2023-12-21 02:31:37,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 02:31:37,896 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 98 [2023-12-21 02:31:37,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:31:37,898 INFO L225 Difference]: With dead ends: 309 [2023-12-21 02:31:37,898 INFO L226 Difference]: Without dead ends: 198 [2023-12-21 02:31:37,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2023-12-21 02:31:37,899 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 357 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:31:37,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 499 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:31:37,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-12-21 02:31:37,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 140. [2023-12-21 02:31:37,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 126 states have (on average 1.4523809523809523) internal successors, (183), 126 states have internal predecessors, (183), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-21 02:31:37,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 207 transitions. [2023-12-21 02:31:37,907 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 207 transitions. Word has length 98 [2023-12-21 02:31:37,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:31:37,908 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 207 transitions. [2023-12-21 02:31:37,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:37,908 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 207 transitions. [2023-12-21 02:31:37,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 02:31:37,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:31:37,909 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:31:37,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-21 02:31:38,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:38,116 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:31:38,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:31:38,117 INFO L85 PathProgramCache]: Analyzing trace with hash -36477919, now seen corresponding path program 1 times [2023-12-21 02:31:38,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:31:38,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466656746] [2023-12-21 02:31:38,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:38,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:31:38,138 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:31:38,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665656617] [2023-12-21 02:31:38,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:38,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:38,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:31:38,159 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:31:38,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 02:31:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:31:38,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 02:31:38,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:31:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-21 02:31:38,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:31:38,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:31:38,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466656746] [2023-12-21 02:31:38,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:31:38,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665656617] [2023-12-21 02:31:38,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665656617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:31:38,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:31:38,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 02:31:38,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889805734] [2023-12-21 02:31:38,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:31:38,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:31:38,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:31:38,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:31:38,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:31:38,413 INFO L87 Difference]: Start difference. First operand 140 states and 207 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:38,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:31:38,559 INFO L93 Difference]: Finished difference Result 392 states and 581 transitions. [2023-12-21 02:31:38,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 02:31:38,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 100 [2023-12-21 02:31:38,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:31:38,573 INFO L225 Difference]: With dead ends: 392 [2023-12-21 02:31:38,573 INFO L226 Difference]: Without dead ends: 253 [2023-12-21 02:31:38,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:31:38,574 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 120 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:31:38,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 305 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:31:38,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-21 02:31:38,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 210. [2023-12-21 02:31:38,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 183 states have (on average 1.4262295081967213) internal successors, (261), 183 states have internal predecessors, (261), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 02:31:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 309 transitions. [2023-12-21 02:31:38,584 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 309 transitions. Word has length 100 [2023-12-21 02:31:38,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:31:38,584 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 309 transitions. [2023-12-21 02:31:38,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:38,584 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 309 transitions. [2023-12-21 02:31:38,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 02:31:38,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:31:38,585 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:31:38,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 02:31:38,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:38,806 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:31:38,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:31:38,807 INFO L85 PathProgramCache]: Analyzing trace with hash -578867952, now seen corresponding path program 1 times [2023-12-21 02:31:38,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:31:38,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888699155] [2023-12-21 02:31:38,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:38,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:31:38,825 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:31:38,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353065232] [2023-12-21 02:31:38,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:38,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:38,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:31:38,826 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:31:38,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 02:31:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:31:38,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 02:31:38,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:31:40,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-21 02:31:40,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:31:40,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:40,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:40,383 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-21 02:31:40,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 22 [2023-12-21 02:31:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-21 02:31:40,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:31:40,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:31:40,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888699155] [2023-12-21 02:31:40,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:31:40,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353065232] [2023-12-21 02:31:40,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353065232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:31:40,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:31:40,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:31:40,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255281266] [2023-12-21 02:31:40,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:31:40,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:31:40,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:31:40,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:31:40,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:31:40,459 INFO L87 Difference]: Start difference. First operand 210 states and 309 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:40,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:31:40,976 INFO L93 Difference]: Finished difference Result 432 states and 632 transitions. [2023-12-21 02:31:40,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:31:40,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 101 [2023-12-21 02:31:40,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:31:40,978 INFO L225 Difference]: With dead ends: 432 [2023-12-21 02:31:40,978 INFO L226 Difference]: Without dead ends: 293 [2023-12-21 02:31:40,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:31:40,979 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 375 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:31:40,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 252 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 323 Invalid, 1 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:31:40,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-21 02:31:40,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 220. [2023-12-21 02:31:40,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 193 states have (on average 1.4145077720207253) internal successors, (273), 193 states have internal predecessors, (273), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 02:31:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 321 transitions. [2023-12-21 02:31:40,994 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 321 transitions. Word has length 101 [2023-12-21 02:31:40,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:31:40,994 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 321 transitions. [2023-12-21 02:31:40,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:40,995 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 321 transitions. [2023-12-21 02:31:40,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 02:31:40,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:31:40,996 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:31:41,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 02:31:41,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-21 02:31:41,203 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:31:41,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:31:41,203 INFO L85 PathProgramCache]: Analyzing trace with hash -971894962, now seen corresponding path program 1 times [2023-12-21 02:31:41,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:31:41,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122596292] [2023-12-21 02:31:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:41,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:31:41,224 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:31:41,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289655495] [2023-12-21 02:31:41,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:41,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:41,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:31:41,226 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:31:41,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 02:31:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:31:41,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 02:31:41,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:31:42,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:42,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-12-21 02:31:42,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:42,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:42,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:42,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 20 [2023-12-21 02:31:42,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:42,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:42,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:42,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 20 [2023-12-21 02:31:42,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:42,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-21 02:31:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-21 02:31:42,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:31:42,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2862 treesize of output 2670 [2023-12-21 02:31:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-21 02:31:45,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:31:45,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122596292] [2023-12-21 02:31:45,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:31:45,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289655495] [2023-12-21 02:31:45,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289655495] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 02:31:45,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:31:45,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2023-12-21 02:31:45,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590657697] [2023-12-21 02:31:45,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:31:45,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:31:45,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:31:45,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:31:45,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-12-21 02:31:45,860 INFO L87 Difference]: Start difference. First operand 220 states and 321 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:31:49,976 INFO L93 Difference]: Finished difference Result 548 states and 804 transitions. [2023-12-21 02:31:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 02:31:49,977 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 101 [2023-12-21 02:31:49,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:31:49,979 INFO L225 Difference]: With dead ends: 548 [2023-12-21 02:31:49,979 INFO L226 Difference]: Without dead ends: 403 [2023-12-21 02:31:49,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2023-12-21 02:31:49,980 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 405 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:31:49,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 703 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-21 02:31:49,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2023-12-21 02:31:50,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 284. [2023-12-21 02:31:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 257 states have (on average 1.4357976653696498) internal successors, (369), 257 states have internal predecessors, (369), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 02:31:50,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 417 transitions. [2023-12-21 02:31:50,003 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 417 transitions. Word has length 101 [2023-12-21 02:31:50,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:31:50,003 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 417 transitions. [2023-12-21 02:31:50,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:50,004 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 417 transitions. [2023-12-21 02:31:50,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 02:31:50,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:31:50,005 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:31:50,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 02:31:50,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:50,213 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:31:50,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:31:50,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1667691150, now seen corresponding path program 1 times [2023-12-21 02:31:50,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:31:50,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072076292] [2023-12-21 02:31:50,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:50,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:31:50,239 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:31:50,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365675791] [2023-12-21 02:31:50,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:50,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:50,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:31:50,241 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:31:50,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 02:31:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:31:50,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 02:31:50,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:31:51,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:51,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:51,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:51,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-12-21 02:31:52,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:52,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:52,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:52,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-12-21 02:31:52,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:52,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:52,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:52,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-12-21 02:31:52,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:31:52,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 18 [2023-12-21 02:31:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-21 02:31:52,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:31:52,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:31:52,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072076292] [2023-12-21 02:31:52,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:31:52,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365675791] [2023-12-21 02:31:52,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365675791] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:31:52,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:31:52,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:31:52,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730308606] [2023-12-21 02:31:52,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:31:52,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:31:52,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:31:52,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:31:52,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:31:52,139 INFO L87 Difference]: Start difference. First operand 284 states and 417 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:52,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:31:52,804 INFO L93 Difference]: Finished difference Result 634 states and 934 transitions. [2023-12-21 02:31:52,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:31:52,805 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2023-12-21 02:31:52,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:31:52,807 INFO L225 Difference]: With dead ends: 634 [2023-12-21 02:31:52,807 INFO L226 Difference]: Without dead ends: 453 [2023-12-21 02:31:52,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:31:52,808 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 440 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 02:31:52,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 557 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 02:31:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2023-12-21 02:31:52,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 348. [2023-12-21 02:31:52,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 321 states have (on average 1.4485981308411215) internal successors, (465), 321 states have internal predecessors, (465), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 02:31:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 513 transitions. [2023-12-21 02:31:52,829 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 513 transitions. Word has length 103 [2023-12-21 02:31:52,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:31:52,830 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 513 transitions. [2023-12-21 02:31:52,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:52,830 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 513 transitions. [2023-12-21 02:31:52,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 02:31:52,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:31:52,832 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:31:52,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 02:31:53,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 02:31:53,038 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:31:53,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:31:53,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1966610452, now seen corresponding path program 1 times [2023-12-21 02:31:53,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:31:53,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665865446] [2023-12-21 02:31:53,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:53,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:31:53,058 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:31:53,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882929296] [2023-12-21 02:31:53,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:53,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:53,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:31:53,077 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:31:53,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 02:31:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:31:53,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 02:31:53,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:31:53,295 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:31:53,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 57 [2023-12-21 02:31:53,317 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-21 02:31:53,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:31:53,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:31:53,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665865446] [2023-12-21 02:31:53,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:31:53,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882929296] [2023-12-21 02:31:53,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882929296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:31:53,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:31:53,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:31:53,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14798961] [2023-12-21 02:31:53,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:31:53,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:31:53,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:31:53,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:31:53,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:31:53,319 INFO L87 Difference]: Start difference. First operand 348 states and 513 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:53,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:31:53,492 INFO L93 Difference]: Finished difference Result 603 states and 890 transitions. [2023-12-21 02:31:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:31:53,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2023-12-21 02:31:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:31:53,507 INFO L225 Difference]: With dead ends: 603 [2023-12-21 02:31:53,507 INFO L226 Difference]: Without dead ends: 358 [2023-12-21 02:31:53,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:31:53,508 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 18 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:31:53,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 402 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:31:53,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-12-21 02:31:53,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 350. [2023-12-21 02:31:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 323 states have (on average 1.4458204334365325) internal successors, (467), 323 states have internal predecessors, (467), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 02:31:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 515 transitions. [2023-12-21 02:31:53,537 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 515 transitions. Word has length 103 [2023-12-21 02:31:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:31:53,538 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 515 transitions. [2023-12-21 02:31:53,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:53,538 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 515 transitions. [2023-12-21 02:31:53,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 02:31:53,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:31:53,539 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:31:53,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 02:31:53,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-21 02:31:53,752 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:31:53,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:31:53,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1148962002, now seen corresponding path program 1 times [2023-12-21 02:31:53,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:31:53,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870924746] [2023-12-21 02:31:53,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:53,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:31:53,775 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:31:53,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110887648] [2023-12-21 02:31:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:53,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:53,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:31:53,779 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:31:53,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 02:31:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:31:53,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 02:31:53,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:31:55,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:55,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:55,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:55,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-21 02:31:55,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:55,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:55,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:55,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-21 02:31:55,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:55,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:55,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:55,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-21 02:31:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-21 02:31:55,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:31:55,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:31:55,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870924746] [2023-12-21 02:31:55,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:31:55,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110887648] [2023-12-21 02:31:55,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110887648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:31:55,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:31:55,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:31:55,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205316062] [2023-12-21 02:31:55,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:31:55,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:31:55,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:31:55,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:31:55,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:31:55,691 INFO L87 Difference]: Start difference. First operand 350 states and 515 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:56,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:31:56,216 INFO L93 Difference]: Finished difference Result 734 states and 1085 transitions. [2023-12-21 02:31:56,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:31:56,217 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2023-12-21 02:31:56,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:31:56,223 INFO L225 Difference]: With dead ends: 734 [2023-12-21 02:31:56,223 INFO L226 Difference]: Without dead ends: 517 [2023-12-21 02:31:56,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:31:56,226 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 459 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:31:56,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 384 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:31:56,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2023-12-21 02:31:56,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 414. [2023-12-21 02:31:56,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 387 states have (on average 1.449612403100775) internal successors, (561), 387 states have internal predecessors, (561), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 02:31:56,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 609 transitions. [2023-12-21 02:31:56,248 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 609 transitions. Word has length 103 [2023-12-21 02:31:56,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:31:56,248 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 609 transitions. [2023-12-21 02:31:56,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-21 02:31:56,248 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 609 transitions. [2023-12-21 02:31:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 02:31:56,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:31:56,251 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:31:56,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 02:31:56,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-21 02:31:56,458 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:31:56,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:31:56,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1886545868, now seen corresponding path program 1 times [2023-12-21 02:31:56,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:31:56,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340694596] [2023-12-21 02:31:56,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:56,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:31:56,477 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:31:56,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1979203085] [2023-12-21 02:31:56,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:31:56,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:31:56,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:31:56,494 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:31:56,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 02:31:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:31:56,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 02:31:56,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:31:58,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:58,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:58,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:58,062 INFO L349 Elim1Store]: treesize reduction 91, result has 30.5 percent of original size [2023-12-21 02:31:58,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 65 treesize of output 79 [2023-12-21 02:31:58,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:58,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:58,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:31:58,976 INFO L349 Elim1Store]: treesize reduction 264, result has 50.7 percent of original size [2023-12-21 02:31:58,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 230 treesize of output 407 [2023-12-21 02:34:30,287 WARN L293 SmtUtils]: Spent 26.76s on a formula simplification. DAG size of input: 2536 DAG size of output: 2632 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:35:06,303 WARN L293 SmtUtils]: Spent 28.70s on a formula simplification. DAG size of input: 2533 DAG size of output: 2628 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:35:39,722 WARN L293 SmtUtils]: Spent 26.10s on a formula simplification. DAG size of input: 2525 DAG size of output: 2640 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:36:08,292 WARN L293 SmtUtils]: Spent 21.62s on a formula simplification. DAG size of input: 2518 DAG size of output: 2602 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:39:02,892 WARN L293 SmtUtils]: Spent 7.09s on a formula simplification. DAG size of input: 2421 DAG size of output: 2397 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:40:49,517 WARN L293 SmtUtils]: Spent 8.52s on a formula simplification. DAG size of input: 2381 DAG size of output: 2357 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:41:00,768 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-21 02:41:00,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:41:00,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340694596] [2023-12-21 02:41:00,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:41:00,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979203085] [2023-12-21 02:41:00,769 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-21 02:41:00,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 02:41:00,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2023-12-21 02:41:00,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 02:41:00,970 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:111) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.assertTerm(WrapperScript.java:158) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:495) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.pushInner(QuantifierPusher.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:194) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 84 more [2023-12-21 02:41:00,974 INFO L158 Benchmark]: Toolchain (without parser) took 568615.87ms. Allocated memory was 352.3MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 312.6MB in the beginning and 1.0GB in the end (delta: -735.4MB). Peak memory consumption was 839.9MB. Max. memory is 8.0GB. [2023-12-21 02:41:00,974 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 02:41:00,974 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.65ms. Allocated memory is still 352.3MB. Free memory was 312.1MB in the beginning and 296.9MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-21 02:41:00,974 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.57ms. Allocated memory is still 352.3MB. Free memory was 296.9MB in the beginning and 292.1MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-21 02:41:00,975 INFO L158 Benchmark]: Boogie Preprocessor took 58.16ms. Allocated memory is still 352.3MB. Free memory was 292.1MB in the beginning and 287.4MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 02:41:00,975 INFO L158 Benchmark]: RCFGBuilder took 698.13ms. Allocated memory is still 352.3MB. Free memory was 287.4MB in the beginning and 252.8MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-12-21 02:41:00,975 INFO L158 Benchmark]: TraceAbstraction took 567540.71ms. Allocated memory was 352.3MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 252.3MB in the beginning and 1.0GB in the end (delta: -795.6MB). Peak memory consumption was 779.1MB. Max. memory is 8.0GB. [2023-12-21 02:41:00,976 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 251.65ms. Allocated memory is still 352.3MB. Free memory was 312.1MB in the beginning and 296.9MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.57ms. Allocated memory is still 352.3MB. Free memory was 296.9MB in the beginning and 292.1MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.16ms. Allocated memory is still 352.3MB. Free memory was 292.1MB in the beginning and 287.4MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 698.13ms. Allocated memory is still 352.3MB. Free memory was 287.4MB in the beginning and 252.8MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * TraceAbstraction took 567540.71ms. Allocated memory was 352.3MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 252.3MB in the beginning and 1.0GB in the end (delta: -795.6MB). Peak memory consumption was 779.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...