/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-64.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 08:45:45,244 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 08:45:45,313 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 08:45:45,317 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 08:45:45,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 08:45:45,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 08:45:45,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 08:45:45,340 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 08:45:45,341 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 08:45:45,343 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 08:45:45,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 08:45:45,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 08:45:45,344 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 08:45:45,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 08:45:45,346 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 08:45:45,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 08:45:45,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 08:45:45,346 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 08:45:45,346 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 08:45:45,347 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 08:45:45,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 08:45:45,348 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 08:45:45,348 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 08:45:45,348 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 08:45:45,348 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 08:45:45,348 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 08:45:45,348 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 08:45:45,349 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 08:45:45,349 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 08:45:45,349 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 08:45:45,350 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 08:45:45,350 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 08:45:45,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:45:45,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 08:45:45,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 08:45:45,350 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 08:45:45,351 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 08:45:45,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 08:45:45,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 08:45:45,351 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 08:45:45,351 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 08:45:45,351 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 08:45:45,351 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 08:45:45,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 08:45:45,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 08:45:45,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 08:45:45,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 08:45:45,562 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 08:45:45,563 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 08:45:45,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-64.i [2023-12-19 08:45:46,626 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 08:45:46,817 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 08:45:46,818 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-64.i [2023-12-19 08:45:46,827 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fbc8c7ac/3950a9e726574154944beb76ef0afcbd/FLAGf7cd43e50 [2023-12-19 08:45:46,841 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fbc8c7ac/3950a9e726574154944beb76ef0afcbd [2023-12-19 08:45:46,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 08:45:46,844 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 08:45:46,846 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 08:45:46,846 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 08:45:46,849 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 08:45:46,850 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:45:46" (1/1) ... [2023-12-19 08:45:46,851 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3cd38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:45:46, skipping insertion in model container [2023-12-19 08:45:46,851 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:45:46" (1/1) ... [2023-12-19 08:45:46,883 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 08:45:47,006 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-64.i[919,932] [2023-12-19 08:45:47,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:45:47,085 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 08:45:47,097 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-64.i[919,932] [2023-12-19 08:45:47,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:45:47,157 INFO L206 MainTranslator]: Completed translation [2023-12-19 08:45:47,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:45:47 WrapperNode [2023-12-19 08:45:47,157 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 08:45:47,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 08:45:47,159 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 08:45:47,159 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 08:45:47,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:45:47" (1/1) ... [2023-12-19 08:45:47,187 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:45:47" (1/1) ... [2023-12-19 08:45:47,214 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 242 [2023-12-19 08:45:47,215 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 08:45:47,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 08:45:47,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 08:45:47,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 08:45:47,226 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:45:47" (1/1) ... [2023-12-19 08:45:47,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:45:47" (1/1) ... [2023-12-19 08:45:47,239 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:45:47" (1/1) ... [2023-12-19 08:45:47,259 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 08:45:47,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:45:47" (1/1) ... [2023-12-19 08:45:47,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:45:47" (1/1) ... [2023-12-19 08:45:47,266 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:45:47" (1/1) ... [2023-12-19 08:45:47,272 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:45:47" (1/1) ... [2023-12-19 08:45:47,275 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:45:47" (1/1) ... [2023-12-19 08:45:47,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:45:47" (1/1) ... [2023-12-19 08:45:47,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 08:45:47,279 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 08:45:47,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 08:45:47,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 08:45:47,280 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:45:47" (1/1) ... [2023-12-19 08:45:47,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:45:47,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:45:47,306 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 08:45:47,324 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 08:45:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 08:45:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 08:45:47,329 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 08:45:47,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 08:45:47,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 08:45:47,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 08:45:47,421 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 08:45:47,424 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 08:45:47,894 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 08:45:47,937 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 08:45:47,937 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 08:45:47,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:45:47 BoogieIcfgContainer [2023-12-19 08:45:47,938 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 08:45:47,940 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 08:45:47,940 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 08:45:47,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 08:45:47,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 08:45:46" (1/3) ... [2023-12-19 08:45:47,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf13bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:45:47, skipping insertion in model container [2023-12-19 08:45:47,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:45:47" (2/3) ... [2023-12-19 08:45:47,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf13bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:45:47, skipping insertion in model container [2023-12-19 08:45:47,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:45:47" (3/3) ... [2023-12-19 08:45:47,944 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-64.i [2023-12-19 08:45:47,957 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 08:45:47,957 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 08:45:47,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 08:45:47,998 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;@3401773c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 08:45:47,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 08:45:48,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 56 states have internal predecessors, (80), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 08:45:48,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-19 08:45:48,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:45:48,015 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:45:48,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:45:48,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:45:48,019 INFO L85 PathProgramCache]: Analyzing trace with hash -74129947, now seen corresponding path program 1 times [2023-12-19 08:45:48,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:45:48,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419071347] [2023-12-19 08:45:48,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:45:48,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:45:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:45:48,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:45:48,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419071347] [2023-12-19 08:45:48,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 08:45:48,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067843120] [2023-12-19 08:45:48,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:45:48,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:45:48,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:45:48,251 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 08:45:48,277 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 08:45:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:45:48,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 08:45:48,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:45:48,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2023-12-19 08:45:48,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:45:48,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067843120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:45:48,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:45:48,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 08:45:48,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145579346] [2023-12-19 08:45:48,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:45:48,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 08:45:48,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:45:48,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 08:45:48,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 08:45:48,551 INFO L87 Difference]: Start difference. First operand has 96 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 56 states have internal predecessors, (80), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) 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, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-19 08:45:48,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:45:48,585 INFO L93 Difference]: Finished difference Result 189 states and 348 transitions. [2023-12-19 08:45:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 08:45:48,587 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, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) Word has length 233 [2023-12-19 08:45:48,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:45:48,595 INFO L225 Difference]: With dead ends: 189 [2023-12-19 08:45:48,595 INFO L226 Difference]: Without dead ends: 94 [2023-12-19 08:45:48,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 232 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 08:45:48,601 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:45:48,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:45:48,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-19 08:45:48,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-12-19 08:45:48,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 54 states have internal predecessors, (75), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 08:45:48,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 151 transitions. [2023-12-19 08:45:48,650 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 151 transitions. Word has length 233 [2023-12-19 08:45:48,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:45:48,651 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 151 transitions. [2023-12-19 08:45:48,651 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, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-19 08:45:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 151 transitions. [2023-12-19 08:45:48,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-19 08:45:48,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:45:48,661 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:45:48,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 08:45:48,867 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 08:45:48,867 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:45:48,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:45:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash -765950239, now seen corresponding path program 1 times [2023-12-19 08:45:48,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:45:48,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62769911] [2023-12-19 08:45:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:45:48,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:45:48,961 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:45:48,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321808791] [2023-12-19 08:45:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:45:48,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:45:48,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:45:48,970 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 08:45:48,997 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 08:45:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:45:49,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 08:45:49,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:45:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-12-19 08:45:51,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:45:51,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:45:51,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62769911] [2023-12-19 08:45:51,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:45:51,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321808791] [2023-12-19 08:45:51,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321808791] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:45:51,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:45:51,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 08:45:51,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995516430] [2023-12-19 08:45:51,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:45:51,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 08:45:51,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:45:51,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 08:45:51,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:45:51,561 INFO L87 Difference]: Start difference. First operand 94 states and 151 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-12-19 08:45:51,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:45:51,837 INFO L93 Difference]: Finished difference Result 359 states and 574 transitions. [2023-12-19 08:45:51,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 08:45:51,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 233 [2023-12-19 08:45:51,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:45:51,844 INFO L225 Difference]: With dead ends: 359 [2023-12-19 08:45:51,844 INFO L226 Difference]: Without dead ends: 266 [2023-12-19 08:45:51,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 08:45:51,846 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 286 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:45:51,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 637 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 08:45:51,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-12-19 08:45:51,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 108. [2023-12-19 08:45:51,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 68 states have (on average 1.4411764705882353) internal successors, (98), 68 states have internal predecessors, (98), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 08:45:51,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 174 transitions. [2023-12-19 08:45:51,861 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 174 transitions. Word has length 233 [2023-12-19 08:45:51,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:45:51,863 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 174 transitions. [2023-12-19 08:45:51,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-12-19 08:45:51,863 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 174 transitions. [2023-12-19 08:45:51,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-19 08:45:51,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:45:51,865 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:45:51,874 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 08:45:52,072 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 08:45:52,072 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:45:52,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:45:52,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1777067489, now seen corresponding path program 1 times [2023-12-19 08:45:52,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:45:52,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988676582] [2023-12-19 08:45:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:45:52,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:45:52,117 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:45:52,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567125693] [2023-12-19 08:45:52,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:45:52,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:45:52,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:45:52,118 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 08:45:52,185 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 08:45:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:45:52,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 08:45:52,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:45:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-12-19 08:45:53,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:45:53,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:45:53,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988676582] [2023-12-19 08:45:53,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:45:53,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567125693] [2023-12-19 08:45:53,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567125693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:45:53,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:45:53,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 08:45:53,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355407443] [2023-12-19 08:45:53,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:45:53,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 08:45:53,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:45:53,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 08:45:53,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:45:53,221 INFO L87 Difference]: Start difference. First operand 108 states and 174 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-12-19 08:45:53,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:45:53,401 INFO L93 Difference]: Finished difference Result 373 states and 595 transitions. [2023-12-19 08:45:53,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 08:45:53,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 233 [2023-12-19 08:45:53,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:45:53,404 INFO L225 Difference]: With dead ends: 373 [2023-12-19 08:45:53,404 INFO L226 Difference]: Without dead ends: 266 [2023-12-19 08:45:53,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 08:45:53,405 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 265 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:45:53,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 681 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:45:53,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-12-19 08:45:53,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 115. [2023-12-19 08:45:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 75 states have (on average 1.48) internal successors, (111), 75 states have internal predecessors, (111), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 08:45:53,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 187 transitions. [2023-12-19 08:45:53,422 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 187 transitions. Word has length 233 [2023-12-19 08:45:53,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:45:53,423 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 187 transitions. [2023-12-19 08:45:53,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-12-19 08:45:53,423 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 187 transitions. [2023-12-19 08:45:53,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-19 08:45:53,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:45:53,425 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:45:53,437 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 08:45:53,634 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 08:45:53,637 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:45:53,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:45:53,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1203078369, now seen corresponding path program 1 times [2023-12-19 08:45:53,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:45:53,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068553684] [2023-12-19 08:45:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:45:53,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:45:53,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:45:53,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082843718] [2023-12-19 08:45:53,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:45:53,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:45:53,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:45:53,697 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 08:45:53,700 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 08:45:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:45:53,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 08:45:53,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:45:54,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-12-19 08:45:54,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:45:54,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:45:54,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068553684] [2023-12-19 08:45:54,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:45:54,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082843718] [2023-12-19 08:45:54,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082843718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:45:54,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:45:54,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 08:45:54,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070834535] [2023-12-19 08:45:54,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:45:54,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 08:45:54,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:45:54,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 08:45:54,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:45:54,561 INFO L87 Difference]: Start difference. First operand 115 states and 187 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-12-19 08:45:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:45:54,710 INFO L93 Difference]: Finished difference Result 325 states and 522 transitions. [2023-12-19 08:45:54,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 08:45:54,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 233 [2023-12-19 08:45:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:45:54,712 INFO L225 Difference]: With dead ends: 325 [2023-12-19 08:45:54,713 INFO L226 Difference]: Without dead ends: 211 [2023-12-19 08:45:54,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 08:45:54,714 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 165 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:45:54,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 852 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:45:54,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-19 08:45:54,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 115. [2023-12-19 08:45:54,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 75 states have (on average 1.48) internal successors, (111), 75 states have internal predecessors, (111), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 08:45:54,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 187 transitions. [2023-12-19 08:45:54,723 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 187 transitions. Word has length 233 [2023-12-19 08:45:54,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:45:54,724 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 187 transitions. [2023-12-19 08:45:54,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-12-19 08:45:54,724 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 187 transitions. [2023-12-19 08:45:54,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-19 08:45:54,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:45:54,726 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:45:54,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 08:45:54,932 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 08:45:54,932 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:45:54,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:45:54,933 INFO L85 PathProgramCache]: Analyzing trace with hash -191961119, now seen corresponding path program 1 times [2023-12-19 08:45:54,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:45:54,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514414682] [2023-12-19 08:45:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:45:54,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:45:54,966 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:45:54,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899152692] [2023-12-19 08:45:54,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:45:54,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:45:54,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:45:54,968 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 08:45:54,984 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 08:45:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:45:55,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 08:45:55,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:45:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2023-12-19 08:45:57,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:45:57,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:45:57,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514414682] [2023-12-19 08:45:57,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:45:57,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899152692] [2023-12-19 08:45:57,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899152692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:45:57,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:45:57,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 08:45:57,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937132017] [2023-12-19 08:45:57,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:45:57,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 08:45:57,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:45:57,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 08:45:57,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:45:57,661 INFO L87 Difference]: Start difference. First operand 115 states and 187 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-12-19 08:45:57,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:45:57,874 INFO L93 Difference]: Finished difference Result 387 states and 620 transitions. [2023-12-19 08:45:57,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 08:45:57,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 233 [2023-12-19 08:45:57,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:45:57,876 INFO L225 Difference]: With dead ends: 387 [2023-12-19 08:45:57,876 INFO L226 Difference]: Without dead ends: 273 [2023-12-19 08:45:57,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 08:45:57,877 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 263 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:45:57,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 1056 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 08:45:57,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-19 08:45:57,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 101. [2023-12-19 08:45:57,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 61 states have (on average 1.4098360655737705) internal successors, (86), 61 states have internal predecessors, (86), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 08:45:57,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 162 transitions. [2023-12-19 08:45:57,886 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 162 transitions. Word has length 233 [2023-12-19 08:45:57,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:45:57,887 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 162 transitions. [2023-12-19 08:45:57,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2023-12-19 08:45:57,887 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 162 transitions. [2023-12-19 08:45:57,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-19 08:45:57,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:45:57,905 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:45:57,915 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 08:45:58,115 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 08:45:58,116 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:45:58,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:45:58,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2000959674, now seen corresponding path program 1 times [2023-12-19 08:45:58,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:45:58,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673106282] [2023-12-19 08:45:58,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:45:58,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:45:58,138 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:45:58,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1722675235] [2023-12-19 08:45:58,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:45:58,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:45:58,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:45:58,156 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 08:45:58,157 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 08:45:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:45:58,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 08:45:58,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-19 09:00:24,456 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 09:00:24,477 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 09:00:24,627 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 09:00:24,637 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 09:00:24,835 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 09:00:24,835 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 236 with TraceHistMax 38,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-61-2-2-3-2-3-2-2-2-3-2-3-2-3-2-3-2-3-2-2-2-3-2-3-2-3-2-3-2-3-2-2-2-3-2-2-2-3-2-2-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 context. [2023-12-19 09:00:24,839 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-19 09:00:24,841 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 09:00:24,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 09:00:24 BoogieIcfgContainer [2023-12-19 09:00:24,843 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 09:00:24,843 INFO L158 Benchmark]: Toolchain (without parser) took 877998.72ms. Allocated memory was 231.7MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 167.3MB in the beginning and 716.1MB in the end (delta: -548.7MB). Peak memory consumption was 969.5MB. Max. memory is 8.0GB. [2023-12-19 09:00:24,845 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 231.7MB. Free memory was 183.3MB in the beginning and 183.2MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 09:00:24,845 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.60ms. Allocated memory is still 231.7MB. Free memory was 167.3MB in the beginning and 151.5MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-19 09:00:24,845 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.90ms. Allocated memory was 231.7MB in the beginning and 328.2MB in the end (delta: 96.5MB). Free memory was 151.5MB in the beginning and 293.5MB in the end (delta: -142.0MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. [2023-12-19 09:00:24,846 INFO L158 Benchmark]: Boogie Preprocessor took 63.55ms. Allocated memory is still 328.2MB. Free memory was 293.5MB in the beginning and 289.9MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-19 09:00:24,846 INFO L158 Benchmark]: RCFGBuilder took 658.69ms. Allocated memory is still 328.2MB. Free memory was 289.9MB in the beginning and 263.1MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-12-19 09:00:24,846 INFO L158 Benchmark]: TraceAbstraction took 876902.70ms. Allocated memory was 328.2MB in the beginning and 1.5GB in the end (delta: 1.1GB). Free memory was 262.6MB in the beginning and 716.1MB in the end (delta: -453.4MB). Peak memory consumption was 967.5MB. Max. memory is 8.0GB. [2023-12-19 09:00:24,848 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 231.7MB. Free memory was 183.3MB in the beginning and 183.2MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 311.60ms. Allocated memory is still 231.7MB. Free memory was 167.3MB in the beginning and 151.5MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.90ms. Allocated memory was 231.7MB in the beginning and 328.2MB in the end (delta: 96.5MB). Free memory was 151.5MB in the beginning and 293.5MB in the end (delta: -142.0MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 63.55ms. Allocated memory is still 328.2MB. Free memory was 293.5MB in the beginning and 289.9MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 658.69ms. Allocated memory is still 328.2MB. Free memory was 289.9MB in the beginning and 263.1MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * TraceAbstraction took 876902.70ms. Allocated memory was 328.2MB in the beginning and 1.5GB in the end (delta: 1.1GB). Free memory was 262.6MB in the beginning and 716.1MB in the end (delta: -453.4MB). Peak memory consumption was 967.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 236 with TraceHistMax 38,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-61-2-2-3-2-3-2-2-2-3-2-3-2-3-2-3-2-3-2-2-2-3-2-3-2-3-2-3-2-3-2-2-2-3-2-2-2-3-2-2-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 876.9s, OverallIterations: 6, TraceHistogramMax: 38, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 979 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 979 mSDsluCounter, 3373 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2075 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 710 IncrementalHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 1298 mSDtfsCounter, 710 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1168 GetRequests, 1148 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=3, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 577 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 1398 NumberOfCodeBlocks, 1398 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1160 ConstructedInterpolants, 0 QuantifiedInterpolants, 1725 SizeOfPredicates, 12 NumberOfNonLiveVariables, 2689 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 14060/14060 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown