/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-39.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 12:26:50,789 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 12:26:50,873 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 12:26:50,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 12:26:50,880 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 12:26:50,903 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 12:26:50,903 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 12:26:50,904 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 12:26:50,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 12:26:50,908 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 12:26:50,908 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 12:26:50,908 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 12:26:50,909 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 12:26:50,910 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 12:26:50,910 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 12:26:50,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 12:26:50,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 12:26:50,911 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 12:26:50,911 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 12:26:50,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 12:26:50,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 12:26:50,912 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 12:26:50,912 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 12:26:50,912 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 12:26:50,912 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 12:26:50,912 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 12:26:50,913 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 12:26:50,913 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 12:26:50,913 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 12:26:50,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 12:26:50,914 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 12:26:50,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 12:26:50,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:26:50,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 12:26:50,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 12:26:50,915 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 12:26:50,915 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 12:26:50,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 12:26:50,916 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 12:26:50,916 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 12:26:50,916 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 12:26:50,917 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 12:26:50,917 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 12:26:50,917 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 12:26:51,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 12:26:51,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 12:26:51,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 12:26:51,133 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 12:26:51,133 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 12:26:51,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-39.i [2023-12-19 12:26:52,252 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 12:26:52,426 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 12:26:52,427 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-39.i [2023-12-19 12:26:52,437 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8feed9772/9841fae64a8d400d8c2c2c8cffa05c93/FLAGbe1561367 [2023-12-19 12:26:52,447 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8feed9772/9841fae64a8d400d8c2c2c8cffa05c93 [2023-12-19 12:26:52,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 12:26:52,450 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 12:26:52,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 12:26:52,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 12:26:52,456 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 12:26:52,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:26:52" (1/1) ... [2023-12-19 12:26:52,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aee5ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:26:52, skipping insertion in model container [2023-12-19 12:26:52,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:26:52" (1/1) ... [2023-12-19 12:26:52,497 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 12:26:52,607 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_operatoramount_amount100_file-39.i[916,929] [2023-12-19 12:26:52,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:26:52,677 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 12:26:52,685 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_operatoramount_amount100_file-39.i[916,929] [2023-12-19 12:26:52,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:26:52,722 INFO L206 MainTranslator]: Completed translation [2023-12-19 12:26:52,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:26:52 WrapperNode [2023-12-19 12:26:52,723 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 12:26:52,727 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 12:26:52,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 12:26:52,728 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 12:26:52,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:26:52" (1/1) ... [2023-12-19 12:26:52,743 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:26:52" (1/1) ... [2023-12-19 12:26:52,789 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 205 [2023-12-19 12:26:52,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 12:26:52,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 12:26:52,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 12:26:52,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 12:26:52,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:26:52" (1/1) ... [2023-12-19 12:26:52,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:26:52" (1/1) ... [2023-12-19 12:26:52,800 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:26:52" (1/1) ... [2023-12-19 12:26:52,819 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 12:26:52,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:26:52" (1/1) ... [2023-12-19 12:26:52,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:26:52" (1/1) ... [2023-12-19 12:26:52,830 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:26:52" (1/1) ... [2023-12-19 12:26:52,846 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:26:52" (1/1) ... [2023-12-19 12:26:52,849 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:26:52" (1/1) ... [2023-12-19 12:26:52,851 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:26:52" (1/1) ... [2023-12-19 12:26:52,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 12:26:52,857 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 12:26:52,857 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 12:26:52,857 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 12:26:52,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:26:52" (1/1) ... [2023-12-19 12:26:52,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:26:52,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:26:52,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 12:26:52,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 12:26:52,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 12:26:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 12:26:52,959 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 12:26:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 12:26:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 12:26:52,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 12:26:53,023 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 12:26:53,025 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 12:26:53,408 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 12:26:53,450 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 12:26:53,450 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 12:26:53,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:26:53 BoogieIcfgContainer [2023-12-19 12:26:53,451 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 12:26:53,453 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 12:26:53,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 12:26:53,455 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 12:26:53,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:26:52" (1/3) ... [2023-12-19 12:26:53,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b978b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:26:53, skipping insertion in model container [2023-12-19 12:26:53,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:26:52" (2/3) ... [2023-12-19 12:26:53,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b978b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:26:53, skipping insertion in model container [2023-12-19 12:26:53,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:26:53" (3/3) ... [2023-12-19 12:26:53,458 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-39.i [2023-12-19 12:26:53,469 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 12:26:53,469 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 12:26:53,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 12:26:53,515 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;@2e5ace43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 12:26:53,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 12:26:53,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 55 states have (on average 1.490909090909091) internal successors, (82), 56 states have internal predecessors, (82), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-19 12:26:53,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 12:26:53,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:26:53,532 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:26:53,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:26:53,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:26:53,537 INFO L85 PathProgramCache]: Analyzing trace with hash -272672647, now seen corresponding path program 1 times [2023-12-19 12:26:53,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:26:53,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128482161] [2023-12-19 12:26:53,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:26:53,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:26:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:26:53,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:26:53,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128482161] [2023-12-19 12:26:53,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 12:26:53,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120113984] [2023-12-19 12:26:53,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:26:53,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:26:53,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:26:53,733 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:26:53,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 12:26:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:26:53,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 12:26:53,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:26:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2023-12-19 12:26:54,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:26:54,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120113984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:26:54,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:26:54,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 12:26:54,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737536417] [2023-12-19 12:26:54,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:26:54,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 12:26:54,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:26:54,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 12:26:54,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:26:54,048 INFO L87 Difference]: Start difference. First operand has 82 states, 55 states have (on average 1.490909090909091) internal successors, (82), 56 states have internal predecessors, (82), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-19 12:26:54,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:26:54,126 INFO L93 Difference]: Finished difference Result 161 states and 282 transitions. [2023-12-19 12:26:54,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 12:26:54,129 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) Word has length 162 [2023-12-19 12:26:54,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:26:54,135 INFO L225 Difference]: With dead ends: 161 [2023-12-19 12:26:54,135 INFO L226 Difference]: Without dead ends: 80 [2023-12-19 12:26:54,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:26:54,140 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:26:54,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 12:26:54,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-19 12:26:54,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-12-19 12:26:54,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.4259259259259258) internal successors, (77), 54 states have internal predecessors, (77), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-19 12:26:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 125 transitions. [2023-12-19 12:26:54,171 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 125 transitions. Word has length 162 [2023-12-19 12:26:54,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:26:54,171 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 125 transitions. [2023-12-19 12:26:54,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-19 12:26:54,171 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 125 transitions. [2023-12-19 12:26:54,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 12:26:54,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:26:54,174 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:26:54,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 12:26:54,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 12:26:54,382 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:26:54,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:26:54,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1819338157, now seen corresponding path program 1 times [2023-12-19 12:26:54,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:26:54,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962486542] [2023-12-19 12:26:54,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:26:54,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:26:54,418 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:26:54,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853679035] [2023-12-19 12:26:54,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:26:54,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:26:54,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:26:54,419 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:26:54,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 12:26:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:26:54,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 12:26:54,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:26:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-19 12:26:54,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:26:54,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:26:54,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962486542] [2023-12-19 12:26:54,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:26:54,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853679035] [2023-12-19 12:26:54,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853679035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:26:54,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:26:54,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 12:26:54,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936160802] [2023-12-19 12:26:54,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:26:54,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 12:26:54,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:26:54,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 12:26:54,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:26:54,757 INFO L87 Difference]: Start difference. First operand 80 states and 125 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-12-19 12:26:54,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:26:54,871 INFO L93 Difference]: Finished difference Result 187 states and 291 transitions. [2023-12-19 12:26:54,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 12:26:54,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 162 [2023-12-19 12:26:54,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:26:54,876 INFO L225 Difference]: With dead ends: 187 [2023-12-19 12:26:54,877 INFO L226 Difference]: Without dead ends: 108 [2023-12-19 12:26:54,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:26:54,879 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 24 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:26:54,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 199 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 12:26:54,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-19 12:26:54,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 102. [2023-12-19 12:26:54,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 76 states have (on average 1.4736842105263157) internal successors, (112), 76 states have internal predecessors, (112), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-19 12:26:54,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 160 transitions. [2023-12-19 12:26:54,894 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 160 transitions. Word has length 162 [2023-12-19 12:26:54,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:26:54,896 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 160 transitions. [2023-12-19 12:26:54,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-12-19 12:26:54,897 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 160 transitions. [2023-12-19 12:26:54,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 12:26:54,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:26:54,905 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:26:54,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 12:26:55,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 12:26:55,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:26:55,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:26:55,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1819278575, now seen corresponding path program 1 times [2023-12-19 12:26:55,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:26:55,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885036560] [2023-12-19 12:26:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:26:55,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:26:55,163 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:26:55,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602546772] [2023-12-19 12:26:55,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:26:55,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:26:55,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:26:55,164 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:26:55,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 12:26:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:26:55,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 12:26:55,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:26:55,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 563 proven. 39 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2023-12-19 12:26:55,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:26:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 30 proven. 39 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2023-12-19 12:26:55,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:26:55,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885036560] [2023-12-19 12:26:55,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:26:55,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602546772] [2023-12-19 12:26:55,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602546772] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:26:55,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:26:55,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-19 12:26:55,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665931211] [2023-12-19 12:26:55,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:26:55,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 12:26:55,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:26:55,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 12:26:55,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 12:26:55,574 INFO L87 Difference]: Start difference. First operand 102 states and 160 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2023-12-19 12:26:55,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:26:55,765 INFO L93 Difference]: Finished difference Result 209 states and 324 transitions. [2023-12-19 12:26:55,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 12:26:55,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 162 [2023-12-19 12:26:55,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:26:55,767 INFO L225 Difference]: With dead ends: 209 [2023-12-19 12:26:55,767 INFO L226 Difference]: Without dead ends: 108 [2023-12-19 12:26:55,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:26:55,768 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 168 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:26:55,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 227 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 12:26:55,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-19 12:26:55,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2023-12-19 12:26:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 79 states have (on average 1.4177215189873418) internal successors, (112), 79 states have internal predecessors, (112), 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) [2023-12-19 12:26:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 160 transitions. [2023-12-19 12:26:55,778 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 160 transitions. Word has length 162 [2023-12-19 12:26:55,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:26:55,778 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 160 transitions. [2023-12-19 12:26:55,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2023-12-19 12:26:55,778 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 160 transitions. [2023-12-19 12:26:55,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-19 12:26:55,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:26:55,780 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:26:55,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 12:26:55,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:26:55,986 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:26:55,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:26:55,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1287150318, now seen corresponding path program 1 times [2023-12-19 12:26:55,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:26:55,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503505073] [2023-12-19 12:26:55,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:26:55,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:26:56,036 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:26:56,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883229105] [2023-12-19 12:26:56,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:26:56,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:26:56,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:26:56,038 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:26:56,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 12:26:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:26:56,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 12:26:56,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:26:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-19 12:26:56,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:26:56,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:26:56,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503505073] [2023-12-19 12:26:56,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:26:56,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883229105] [2023-12-19 12:26:56,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883229105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:26:56,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:26:56,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 12:26:56,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223769690] [2023-12-19 12:26:56,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:26:56,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 12:26:56,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:26:56,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 12:26:56,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 12:26:56,192 INFO L87 Difference]: Start difference. First operand 106 states and 160 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-12-19 12:26:56,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:26:56,382 INFO L93 Difference]: Finished difference Result 448 states and 668 transitions. [2023-12-19 12:26:56,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 12:26:56,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 163 [2023-12-19 12:26:56,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:26:56,386 INFO L225 Difference]: With dead ends: 448 [2023-12-19 12:26:56,386 INFO L226 Difference]: Without dead ends: 343 [2023-12-19 12:26:56,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 12:26:56,389 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 255 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:26:56,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 352 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 12:26:56,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-12-19 12:26:56,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 212. [2023-12-19 12:26:56,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 169 states have (on average 1.4378698224852071) internal successors, (243), 170 states have internal predecessors, (243), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 12:26:56,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 319 transitions. [2023-12-19 12:26:56,429 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 319 transitions. Word has length 163 [2023-12-19 12:26:56,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:26:56,429 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 319 transitions. [2023-12-19 12:26:56,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-12-19 12:26:56,430 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 319 transitions. [2023-12-19 12:26:56,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-19 12:26:56,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:26:56,432 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:26:56,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 12:26:56,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:26:56,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:26:56,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:26:56,639 INFO L85 PathProgramCache]: Analyzing trace with hash 700344304, now seen corresponding path program 1 times [2023-12-19 12:26:56,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:26:56,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814479333] [2023-12-19 12:26:56,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:26:56,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:26:56,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:26:56,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592368072] [2023-12-19 12:26:56,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:26:56,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:26:56,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:26:56,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:26:56,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 12:26:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:26:56,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 12:26:56,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:26:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 533 proven. 24 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2023-12-19 12:26:56,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:26:57,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 45 proven. 24 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2023-12-19 12:26:57,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:26:57,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814479333] [2023-12-19 12:26:57,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:26:57,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592368072] [2023-12-19 12:26:57,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592368072] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:26:57,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:26:57,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 12:26:57,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608033261] [2023-12-19 12:26:57,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:26:57,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 12:26:57,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:26:57,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 12:26:57,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 12:26:57,003 INFO L87 Difference]: Start difference. First operand 212 states and 319 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-19 12:26:57,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:26:57,154 INFO L93 Difference]: Finished difference Result 433 states and 646 transitions. [2023-12-19 12:26:57,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 12:26:57,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 163 [2023-12-19 12:26:57,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:26:57,157 INFO L225 Difference]: With dead ends: 433 [2023-12-19 12:26:57,157 INFO L226 Difference]: Without dead ends: 200 [2023-12-19 12:26:57,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 12:26:57,158 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 124 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:26:57,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 222 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 12:26:57,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-19 12:26:57,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 194. [2023-12-19 12:26:57,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 150 states have (on average 1.3933333333333333) internal successors, (209), 151 states have internal predecessors, (209), 38 states have call successors, (38), 5 states have call predecessors, (38), 5 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 12:26:57,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 285 transitions. [2023-12-19 12:26:57,169 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 285 transitions. Word has length 163 [2023-12-19 12:26:57,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:26:57,169 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 285 transitions. [2023-12-19 12:26:57,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-19 12:26:57,169 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 285 transitions. [2023-12-19 12:26:57,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-19 12:26:57,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:26:57,171 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:26:57,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 12:26:57,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:26:57,377 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:26:57,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:26:57,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1427698928, now seen corresponding path program 1 times [2023-12-19 12:26:57,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:26:57,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868571552] [2023-12-19 12:26:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:26:57,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:26:57,397 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:26:57,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370540357] [2023-12-19 12:26:57,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:26:57,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:26:57,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:26:57,398 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:26:57,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 12:26:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:26:57,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-19 12:26:57,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:27:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 531 proven. 201 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-12-19 12:27:39,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:28:03,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:28:03,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868571552] [2023-12-19 12:28:03,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:28:03,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370540357] [2023-12-19 12:28:03,115 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-19 12:28:03,115 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 139 [2023-12-19 12:28:03,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 12:28:03,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:28:03,316 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. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) 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) ... 45 more [2023-12-19 12:28:03,321 INFO L158 Benchmark]: Toolchain (without parser) took 70870.34ms. Allocated memory was 328.2MB in the beginning and 477.1MB in the end (delta: 148.9MB). Free memory was 282.2MB in the beginning and 263.7MB in the end (delta: 18.5MB). Peak memory consumption was 168.4MB. Max. memory is 8.0GB. [2023-12-19 12:28:03,321 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 186.6MB. Free memory is still 133.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 12:28:03,321 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.61ms. Allocated memory is still 328.2MB. Free memory was 282.2MB in the beginning and 264.9MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-19 12:28:03,321 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.19ms. Allocated memory is still 328.2MB. Free memory was 264.9MB in the beginning and 259.2MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-19 12:28:03,322 INFO L158 Benchmark]: Boogie Preprocessor took 66.09ms. Allocated memory is still 328.2MB. Free memory was 259.2MB in the beginning and 249.2MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-19 12:28:03,322 INFO L158 Benchmark]: RCFGBuilder took 594.34ms. Allocated memory is still 328.2MB. Free memory was 249.2MB in the beginning and 214.6MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-12-19 12:28:03,322 INFO L158 Benchmark]: TraceAbstraction took 69867.66ms. Allocated memory was 328.2MB in the beginning and 477.1MB in the end (delta: 148.9MB). Free memory was 214.1MB in the beginning and 263.7MB in the end (delta: -49.7MB). Peak memory consumption was 100.3MB. Max. memory is 8.0GB. [2023-12-19 12:28:03,324 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 186.6MB. Free memory is still 133.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 270.61ms. Allocated memory is still 328.2MB. Free memory was 282.2MB in the beginning and 264.9MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.19ms. Allocated memory is still 328.2MB. Free memory was 264.9MB in the beginning and 259.2MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 66.09ms. Allocated memory is still 328.2MB. Free memory was 259.2MB in the beginning and 249.2MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 594.34ms. Allocated memory is still 328.2MB. Free memory was 249.2MB in the beginning and 214.6MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * TraceAbstraction took 69867.66ms. Allocated memory was 328.2MB in the beginning and 477.1MB in the end (delta: 148.9MB). Free memory was 214.1MB in the beginning and 263.7MB in the end (delta: -49.7MB). Peak memory consumption was 100.3MB. 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. No stderr output. 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. No stderr output.: 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...