/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_loopvsstraightlinecode_100-1loop_file-26.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 11:14:46,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 11:14:46,218 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 11:14:46,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 11:14:46,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 11:14:46,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 11:14:46,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 11:14:46,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 11:14:46,244 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 11:14:46,247 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 11:14:46,247 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 11:14:46,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 11:14:46,248 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 11:14:46,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 11:14:46,249 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 11:14:46,249 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 11:14:46,249 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 11:14:46,249 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 11:14:46,250 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 11:14:46,250 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 11:14:46,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 11:14:46,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 11:14:46,251 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 11:14:46,251 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 11:14:46,251 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 11:14:46,251 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 11:14:46,252 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 11:14:46,252 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 11:14:46,252 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 11:14:46,252 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 11:14:46,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 11:14:46,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 11:14:46,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 11:14:46,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 11:14:46,253 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 11:14:46,253 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 11:14:46,254 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 11:14:46,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 11:14:46,254 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 11:14:46,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 11:14:46,254 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 11:14:46,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 11:14:46,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 11:14:46,254 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 11:14:46,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 11:14:46,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 11:14:46,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 11:14:46,474 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 11:14:46,475 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 11:14:46,475 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-26.i [2023-12-19 11:14:47,494 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 11:14:47,693 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 11:14:47,694 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-26.i [2023-12-19 11:14:47,702 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/094bcc6a1/63b3ab5c81b64ca0b5ec6efe98b34cf4/FLAG5466ee10a [2023-12-19 11:14:47,711 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/094bcc6a1/63b3ab5c81b64ca0b5ec6efe98b34cf4 [2023-12-19 11:14:47,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 11:14:47,713 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 11:14:47,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 11:14:47,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 11:14:47,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 11:14:47,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:14:47" (1/1) ... [2023-12-19 11:14:47,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516dfb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:14:47, skipping insertion in model container [2023-12-19 11:14:47,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:14:47" (1/1) ... [2023-12-19 11:14:47,754 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 11:14:47,855 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_loopvsstraightlinecode_100-1loop_file-26.i[916,929] [2023-12-19 11:14:47,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 11:14:47,932 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 11:14:47,946 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_loopvsstraightlinecode_100-1loop_file-26.i[916,929] [2023-12-19 11:14:47,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 11:14:47,990 INFO L206 MainTranslator]: Completed translation [2023-12-19 11:14:47,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:14:47 WrapperNode [2023-12-19 11:14:47,990 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 11:14:47,991 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 11:14:47,991 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 11:14:47,991 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 11:14:47,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:14:47" (1/1) ... [2023-12-19 11:14:48,010 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:14:47" (1/1) ... [2023-12-19 11:14:48,050 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 237 [2023-12-19 11:14:48,051 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 11:14:48,051 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 11:14:48,051 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 11:14:48,051 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 11:14:48,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:14:47" (1/1) ... [2023-12-19 11:14:48,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:14:47" (1/1) ... [2023-12-19 11:14:48,070 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:14:47" (1/1) ... [2023-12-19 11:14:48,091 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 11:14:48,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:14:47" (1/1) ... [2023-12-19 11:14:48,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:14:47" (1/1) ... [2023-12-19 11:14:48,115 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:14:47" (1/1) ... [2023-12-19 11:14:48,118 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:14:47" (1/1) ... [2023-12-19 11:14:48,120 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:14:47" (1/1) ... [2023-12-19 11:14:48,121 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:14:47" (1/1) ... [2023-12-19 11:14:48,125 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 11:14:48,126 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 11:14:48,126 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 11:14:48,126 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 11:14:48,126 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:14:47" (1/1) ... [2023-12-19 11:14:48,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 11:14:48,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:14:48,154 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 11:14:48,171 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 11:14:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 11:14:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 11:14:48,180 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 11:14:48,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 11:14:48,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 11:14:48,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 11:14:48,276 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 11:14:48,279 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 11:14:48,651 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 11:14:48,695 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 11:14:48,696 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 11:14:48,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:14:48 BoogieIcfgContainer [2023-12-19 11:14:48,696 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 11:14:48,698 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 11:14:48,698 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 11:14:48,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 11:14:48,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 11:14:47" (1/3) ... [2023-12-19 11:14:48,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd59ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:14:48, skipping insertion in model container [2023-12-19 11:14:48,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:14:47" (2/3) ... [2023-12-19 11:14:48,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd59ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:14:48, skipping insertion in model container [2023-12-19 11:14:48,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:14:48" (3/3) ... [2023-12-19 11:14:48,705 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-26.i [2023-12-19 11:14:48,718 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 11:14:48,718 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 11:14:48,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 11:14:48,762 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;@e364192, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 11:14:48,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 11:14:48,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 62 states have internal predecessors, (91), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 11:14:48,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-19 11:14:48,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:14:48,778 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:48,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:14:48,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:14:48,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1551829211, now seen corresponding path program 1 times [2023-12-19 11:14:48,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:14:48,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641789329] [2023-12-19 11:14:48,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:14:48,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:14:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:14:49,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:14:49,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641789329] [2023-12-19 11:14:49,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 11:14:49,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615338090] [2023-12-19 11:14:49,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:14:49,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:14:49,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:14:49,010 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 11:14:49,027 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 11:14:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:14:49,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 11:14:49,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:14:49,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2023-12-19 11:14:49,245 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:14:49,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615338090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:14:49,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:14:49,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 11:14:49,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009465208] [2023-12-19 11:14:49,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:14:49,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 11:14:49,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:14:49,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 11:14:49,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 11:14:49,279 INFO L87 Difference]: Start difference. First operand has 94 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 62 states have internal predecessors, (91), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-19 11:14:49,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:14:49,321 INFO L93 Difference]: Finished difference Result 187 states and 331 transitions. [2023-12-19 11:14:49,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 11:14:49,323 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) Word has length 193 [2023-12-19 11:14:49,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:14:49,329 INFO L225 Difference]: With dead ends: 187 [2023-12-19 11:14:49,329 INFO L226 Difference]: Without dead ends: 92 [2023-12-19 11:14:49,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 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 11:14:49,337 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 11:14:49,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 11:14:49,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-19 11:14:49,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-12-19 11:14:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 60 states have (on average 1.4333333333333333) internal successors, (86), 60 states have internal predecessors, (86), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 11:14:49,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 146 transitions. [2023-12-19 11:14:49,380 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 146 transitions. Word has length 193 [2023-12-19 11:14:49,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:14:49,381 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 146 transitions. [2023-12-19 11:14:49,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-19 11:14:49,381 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 146 transitions. [2023-12-19 11:14:49,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-19 11:14:49,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:14:49,385 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:49,391 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 11:14:49,591 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 11:14:49,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:14:49,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:14:49,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1785565609, now seen corresponding path program 1 times [2023-12-19 11:14:49,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:14:49,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030348634] [2023-12-19 11:14:49,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:14:49,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:14:49,650 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:14:49,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143331931] [2023-12-19 11:14:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:14:49,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:14:49,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:14:49,655 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 11:14:49,683 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 11:14:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:14:49,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 11:14:49,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:14:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-12-19 11:14:49,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:14:49,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:14:49,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030348634] [2023-12-19 11:14:49,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:14:49,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143331931] [2023-12-19 11:14:49,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143331931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:14:49,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:14:49,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 11:14:49,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135264547] [2023-12-19 11:14:49,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:14:49,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 11:14:49,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:14:49,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 11:14:49,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 11:14:49,850 INFO L87 Difference]: Start difference. First operand 92 states and 146 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, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-12-19 11:14:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:14:50,026 INFO L93 Difference]: Finished difference Result 269 states and 427 transitions. [2023-12-19 11:14:50,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 11:14:50,027 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, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 193 [2023-12-19 11:14:50,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:14:50,033 INFO L225 Difference]: With dead ends: 269 [2023-12-19 11:14:50,033 INFO L226 Difference]: Without dead ends: 178 [2023-12-19 11:14:50,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 11:14:50,036 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 121 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 11:14:50,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 332 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 11:14:50,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-19 11:14:50,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 110. [2023-12-19 11:14:50,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 78 states have (on average 1.4743589743589745) internal successors, (115), 78 states have internal predecessors, (115), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-19 11:14:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 175 transitions. [2023-12-19 11:14:50,058 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 175 transitions. Word has length 193 [2023-12-19 11:14:50,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:14:50,060 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 175 transitions. [2023-12-19 11:14:50,060 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, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-12-19 11:14:50,060 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 175 transitions. [2023-12-19 11:14:50,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-19 11:14:50,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:14:50,062 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:50,074 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 11:14:50,272 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 11:14:50,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:14:50,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:14:50,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1072000384, now seen corresponding path program 1 times [2023-12-19 11:14:50,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:14:50,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322737643] [2023-12-19 11:14:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:14:50,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:14:50,307 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:14:50,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419690757] [2023-12-19 11:14:50,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:14:50,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:14:50,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:14:50,309 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 11:14:50,332 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 11:14:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:14:50,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 11:14:50,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:14:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 29 proven. 87 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-19 11:14:50,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:14:50,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2023-12-19 11:14:50,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:14:50,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322737643] [2023-12-19 11:14:50,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:14:50,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419690757] [2023-12-19 11:14:50,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419690757] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 11:14:50,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 11:14:50,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 11:14:50,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996078363] [2023-12-19 11:14:50,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 11:14:50,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 11:14:50,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:14:50,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 11:14:50,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-19 11:14:50,901 INFO L87 Difference]: Start difference. First operand 110 states and 175 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 3 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (60), 2 states have call predecessors, (60), 3 states have call successors, (60) [2023-12-19 11:14:51,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:14:51,277 INFO L93 Difference]: Finished difference Result 281 states and 437 transitions. [2023-12-19 11:14:51,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 11:14:51,278 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 3 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (60), 2 states have call predecessors, (60), 3 states have call successors, (60) Word has length 194 [2023-12-19 11:14:51,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:14:51,282 INFO L225 Difference]: With dead ends: 281 [2023-12-19 11:14:51,282 INFO L226 Difference]: Without dead ends: 172 [2023-12-19 11:14:51,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-19 11:14:51,285 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 216 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 11:14:51,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 404 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 11:14:51,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-19 11:14:51,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 167. [2023-12-19 11:14:51,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 128 states have (on average 1.4453125) internal successors, (185), 129 states have internal predecessors, (185), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-19 11:14:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 253 transitions. [2023-12-19 11:14:51,309 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 253 transitions. Word has length 194 [2023-12-19 11:14:51,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:14:51,310 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 253 transitions. [2023-12-19 11:14:51,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 3 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (60), 2 states have call predecessors, (60), 3 states have call successors, (60) [2023-12-19 11:14:51,310 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 253 transitions. [2023-12-19 11:14:51,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-19 11:14:51,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:14:51,312 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:51,320 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 11:14:51,512 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 11:14:51,512 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:14:51,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:14:51,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1634619010, now seen corresponding path program 1 times [2023-12-19 11:14:51,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:14:51,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831045923] [2023-12-19 11:14:51,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:14:51,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:14:51,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:14:51,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727096964] [2023-12-19 11:14:51,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:14:51,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:14:51,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:14:51,541 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 11:14:51,565 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 11:14:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:14:51,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 11:14:51,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:14:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 857 proven. 33 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2023-12-19 11:14:51,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:14:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 54 proven. 33 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2023-12-19 11:14:51,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:14:51,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831045923] [2023-12-19 11:14:51,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:14:51,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727096964] [2023-12-19 11:14:51,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727096964] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 11:14:51,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 11:14:51,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-19 11:14:51,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047158702] [2023-12-19 11:14:51,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 11:14:51,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 11:14:51,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:14:51,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 11:14:51,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-19 11:14:51,931 INFO L87 Difference]: Start difference. First operand 167 states and 253 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2023-12-19 11:14:52,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:14:52,785 INFO L93 Difference]: Finished difference Result 749 states and 1130 transitions. [2023-12-19 11:14:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 11:14:52,785 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 194 [2023-12-19 11:14:52,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:14:52,789 INFO L225 Difference]: With dead ends: 749 [2023-12-19 11:14:52,789 INFO L226 Difference]: Without dead ends: 583 [2023-12-19 11:14:52,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=302, Invalid=958, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 11:14:52,791 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 734 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 11:14:52,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 795 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 11:14:52,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2023-12-19 11:14:52,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 339. [2023-12-19 11:14:52,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 260 states have (on average 1.4307692307692308) internal successors, (372), 262 states have internal predecessors, (372), 68 states have call successors, (68), 10 states have call predecessors, (68), 10 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-19 11:14:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 508 transitions. [2023-12-19 11:14:52,817 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 508 transitions. Word has length 194 [2023-12-19 11:14:52,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:14:52,819 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 508 transitions. [2023-12-19 11:14:52,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2023-12-19 11:14:52,819 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 508 transitions. [2023-12-19 11:14:52,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-19 11:14:52,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:14:52,822 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:52,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 11:14:53,028 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 11:14:53,029 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:14:53,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:14:53,029 INFO L85 PathProgramCache]: Analyzing trace with hash -54324732, now seen corresponding path program 1 times [2023-12-19 11:14:53,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:14:53,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114881515] [2023-12-19 11:14:53,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:14:53,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:14:53,050 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:14:53,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241297078] [2023-12-19 11:14:53,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:14:53,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:14:53,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:14:53,051 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 11:14:53,079 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 11:14:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:14:53,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 11:14:53,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:14:53,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 1034 proven. 84 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2023-12-19 11:14:53,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:14:53,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 84 proven. 87 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked. [2023-12-19 11:14:53,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:14:53,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114881515] [2023-12-19 11:14:53,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:14:53,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241297078] [2023-12-19 11:14:53,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241297078] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 11:14:53,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 11:14:53,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-12-19 11:14:53,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94847124] [2023-12-19 11:14:53,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 11:14:53,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 11:14:53,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:14:53,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 11:14:53,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-12-19 11:14:53,621 INFO L87 Difference]: Start difference. First operand 339 states and 508 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 3 states have call successors, (53), 3 states have call predecessors, (53), 7 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-12-19 11:14:54,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:14:54,523 INFO L93 Difference]: Finished difference Result 1000 states and 1452 transitions. [2023-12-19 11:14:54,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-19 11:14:54,523 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 3 states have call successors, (53), 3 states have call predecessors, (53), 7 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 194 [2023-12-19 11:14:54,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:14:54,526 INFO L225 Difference]: With dead ends: 1000 [2023-12-19 11:14:54,526 INFO L226 Difference]: Without dead ends: 662 [2023-12-19 11:14:54,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 374 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=584, Invalid=1768, Unknown=0, NotChecked=0, Total=2352 [2023-12-19 11:14:54,528 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 812 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 11:14:54,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 600 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 11:14:54,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-12-19 11:14:54,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 287. [2023-12-19 11:14:54,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 204 states have (on average 1.3088235294117647) internal successors, (267), 206 states have internal predecessors, (267), 68 states have call successors, (68), 14 states have call predecessors, (68), 14 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-19 11:14:54,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 403 transitions. [2023-12-19 11:14:54,563 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 403 transitions. Word has length 194 [2023-12-19 11:14:54,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:14:54,564 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 403 transitions. [2023-12-19 11:14:54,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 3 states have call successors, (53), 3 states have call predecessors, (53), 7 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-12-19 11:14:54,564 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 403 transitions. [2023-12-19 11:14:54,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-19 11:14:54,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:14:54,566 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:54,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 11:14:54,772 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 11:14:54,772 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:14:54,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:14:54,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1599091985, now seen corresponding path program 1 times [2023-12-19 11:14:54,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:14:54,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837707947] [2023-12-19 11:14:54,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:14:54,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:14:54,792 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:14:54,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852644785] [2023-12-19 11:14:54,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:14:54,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:14:54,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:14:54,793 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 11:14:54,812 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 11:14:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:14:54,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 11:14:54,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:14:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-12-19 11:14:55,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:14:55,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:14:55,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837707947] [2023-12-19 11:14:55,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:14:55,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852644785] [2023-12-19 11:14:55,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852644785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:14:55,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:14:55,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 11:14:55,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664440321] [2023-12-19 11:14:55,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:14:55,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 11:14:55,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:14:55,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 11:14:55,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 11:14:55,069 INFO L87 Difference]: Start difference. First operand 287 states and 403 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-12-19 11:14:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:14:55,203 INFO L93 Difference]: Finished difference Result 757 states and 1063 transitions. [2023-12-19 11:14:55,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 11:14:55,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 195 [2023-12-19 11:14:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:14:55,205 INFO L225 Difference]: With dead ends: 757 [2023-12-19 11:14:55,206 INFO L226 Difference]: Without dead ends: 471 [2023-12-19 11:14:55,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 11:14:55,207 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 166 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 11:14:55,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 469 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 11:14:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-12-19 11:14:55,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 429. [2023-12-19 11:14:55,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 305 states have (on average 1.3049180327868852) internal successors, (398), 308 states have internal predecessors, (398), 102 states have call successors, (102), 21 states have call predecessors, (102), 21 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-19 11:14:55,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 602 transitions. [2023-12-19 11:14:55,240 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 602 transitions. Word has length 195 [2023-12-19 11:14:55,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:14:55,241 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 602 transitions. [2023-12-19 11:14:55,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-12-19 11:14:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 602 transitions. [2023-12-19 11:14:55,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-19 11:14:55,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:14:55,242 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:55,264 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 11:14:55,449 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 11:14:55,449 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:14:55,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:14:55,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1458543375, now seen corresponding path program 1 times [2023-12-19 11:14:55,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:14:55,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070789990] [2023-12-19 11:14:55,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:14:55,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:14:55,465 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:14:55,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529396919] [2023-12-19 11:14:55,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:14:55,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:14:55,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:14:55,475 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 11:14:55,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 11:14:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:14:55,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 11:14:55,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:14:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 950 proven. 36 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2023-12-19 11:14:56,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:14:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 132 proven. 39 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked. [2023-12-19 11:14:56,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:14:56,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070789990] [2023-12-19 11:14:56,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:14:56,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529396919] [2023-12-19 11:14:56,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529396919] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 11:14:56,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 11:14:56,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2023-12-19 11:14:56,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402285275] [2023-12-19 11:14:56,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 11:14:56,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 11:14:56,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:14:56,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 11:14:56,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2023-12-19 11:14:56,469 INFO L87 Difference]: Start difference. First operand 429 states and 602 transitions. Second operand has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 6 states have call successors, (60), 4 states have call predecessors, (60), 8 states have return successors, (60), 6 states have call predecessors, (60), 6 states have call successors, (60) [2023-12-19 11:14:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:14:59,184 INFO L93 Difference]: Finished difference Result 2318 states and 3164 transitions. [2023-12-19 11:14:59,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-19 11:14:59,190 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 6 states have call successors, (60), 4 states have call predecessors, (60), 8 states have return successors, (60), 6 states have call predecessors, (60), 6 states have call successors, (60) Word has length 195 [2023-12-19 11:14:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:14:59,198 INFO L225 Difference]: With dead ends: 2318 [2023-12-19 11:14:59,199 INFO L226 Difference]: Without dead ends: 2032 [2023-12-19 11:14:59,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1784 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1205, Invalid=4647, Unknown=0, NotChecked=0, Total=5852 [2023-12-19 11:14:59,202 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 1212 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 2605 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 3105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 2605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 11:14:59,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 1767 Invalid, 3105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 2605 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 11:14:59,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2023-12-19 11:14:59,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1157. [2023-12-19 11:14:59,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 820 states have (on average 1.2878048780487805) internal successors, (1056), 830 states have internal predecessors, (1056), 272 states have call successors, (272), 64 states have call predecessors, (272), 64 states have return successors, (272), 262 states have call predecessors, (272), 272 states have call successors, (272) [2023-12-19 11:14:59,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1600 transitions. [2023-12-19 11:14:59,351 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1600 transitions. Word has length 195 [2023-12-19 11:14:59,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:14:59,352 INFO L495 AbstractCegarLoop]: Abstraction has 1157 states and 1600 transitions. [2023-12-19 11:14:59,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 6 states have call successors, (60), 4 states have call predecessors, (60), 8 states have return successors, (60), 6 states have call predecessors, (60), 6 states have call successors, (60) [2023-12-19 11:14:59,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1600 transitions. [2023-12-19 11:14:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-19 11:14:59,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:14:59,354 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:59,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 11:14:59,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:14:59,562 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:14:59,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:14:59,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1030985587, now seen corresponding path program 1 times [2023-12-19 11:14:59,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:14:59,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284127324] [2023-12-19 11:14:59,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:14:59,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:14:59,581 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:14:59,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872867544] [2023-12-19 11:14:59,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:14:59,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:14:59,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:14:59,582 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 11:14:59,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 11:14:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:14:59,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-19 11:14:59,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:15:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 602 proven. 171 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2023-12-19 11:15:25,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:15:44,411 WARN L293 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 249 DAG size of output: 243 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 11:19:34,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:19:34,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284127324] [2023-12-19 11:19:34,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:19:34,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872867544] [2023-12-19 11:19:34,081 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-19 11:19:34,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 139 [2023-12-19 11:19:34,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 11:19:34,281 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 [2023-12-19 11:19:34,282 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 11:19:34,287 INFO L158 Benchmark]: Toolchain (without parser) took 286574.13ms. Allocated memory was 184.5MB in the beginning and 906.0MB in the end (delta: 721.4MB). Free memory was 137.2MB in the beginning and 417.3MB in the end (delta: -280.0MB). Peak memory consumption was 443.0MB. Max. memory is 8.0GB. [2023-12-19 11:19:34,288 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 130.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 11:19:34,288 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.46ms. Allocated memory is still 184.5MB. Free memory was 136.9MB in the beginning and 120.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-19 11:19:34,288 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.83ms. Allocated memory is still 184.5MB. Free memory was 120.0MB in the beginning and 114.5MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 11:19:34,288 INFO L158 Benchmark]: Boogie Preprocessor took 73.71ms. Allocated memory is still 184.5MB. Free memory was 114.5MB in the beginning and 105.4MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-19 11:19:34,289 INFO L158 Benchmark]: RCFGBuilder took 570.64ms. Allocated memory was 184.5MB in the beginning and 275.8MB in the end (delta: 91.2MB). Free memory was 105.4MB in the beginning and 220.0MB in the end (delta: -114.6MB). Peak memory consumption was 14.8MB. Max. memory is 8.0GB. [2023-12-19 11:19:34,289 INFO L158 Benchmark]: TraceAbstraction took 285588.63ms. Allocated memory was 275.8MB in the beginning and 906.0MB in the end (delta: 630.2MB). Free memory was 218.9MB in the beginning and 417.3MB in the end (delta: -198.3MB). Peak memory consumption was 432.4MB. Max. memory is 8.0GB. [2023-12-19 11:19:34,290 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 130.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 276.46ms. Allocated memory is still 184.5MB. Free memory was 136.9MB in the beginning and 120.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.83ms. Allocated memory is still 184.5MB. Free memory was 120.0MB in the beginning and 114.5MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 73.71ms. Allocated memory is still 184.5MB. Free memory was 114.5MB in the beginning and 105.4MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 570.64ms. Allocated memory was 184.5MB in the beginning and 275.8MB in the end (delta: 91.2MB). Free memory was 105.4MB in the beginning and 220.0MB in the end (delta: -114.6MB). Peak memory consumption was 14.8MB. Max. memory is 8.0GB. * TraceAbstraction took 285588.63ms. Allocated memory was 275.8MB in the beginning and 906.0MB in the end (delta: 630.2MB). Free memory was 218.9MB in the beginning and 417.3MB in the end (delta: -198.3MB). Peak memory consumption was 432.4MB. 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...