/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-19.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 03:57:25,932 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 03:57:25,967 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 03:57:25,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 03:57:25,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 03:57:25,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 03:57:25,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 03:57:25,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 03:57:25,984 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 03:57:25,984 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 03:57:25,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 03:57:25,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 03:57:25,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 03:57:25,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 03:57:25,986 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 03:57:25,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 03:57:25,986 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 03:57:25,986 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 03:57:25,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 03:57:25,987 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 03:57:25,987 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 03:57:25,987 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 03:57:25,987 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 03:57:25,988 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 03:57:25,988 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 03:57:25,988 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 03:57:25,988 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 03:57:25,988 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 03:57:25,989 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 03:57:25,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 03:57:25,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 03:57:25,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 03:57:25,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:57:25,990 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 03:57:25,990 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 03:57:25,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 03:57:25,990 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 03:57:25,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 03:57:25,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 03:57:25,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 03:57:25,991 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 03:57:25,991 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 03:57:25,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 03:57:25,991 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 03:57:26,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 03:57:26,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 03:57:26,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 03:57:26,172 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 03:57:26,176 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 03:57:26,177 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-19.i [2023-12-16 03:57:27,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 03:57:27,529 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 03:57:27,530 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-19.i [2023-12-16 03:57:27,537 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607734cb3/069553e33ed444f6b850512b53646685/FLAGba8ecfc47 [2023-12-16 03:57:27,547 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607734cb3/069553e33ed444f6b850512b53646685 [2023-12-16 03:57:27,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 03:57:27,549 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 03:57:27,550 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 03:57:27,550 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 03:57:27,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 03:57:27,556 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:57:27" (1/1) ... [2023-12-16 03:57:27,557 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a8863db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:27, skipping insertion in model container [2023-12-16 03:57:27,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:57:27" (1/1) ... [2023-12-16 03:57:27,584 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 03:57:27,671 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-19.i[916,929] [2023-12-16 03:57:27,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:57:27,782 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 03:57:27,789 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-19.i[916,929] [2023-12-16 03:57:27,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:57:27,842 INFO L206 MainTranslator]: Completed translation [2023-12-16 03:57:27,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:27 WrapperNode [2023-12-16 03:57:27,842 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 03:57:27,843 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 03:57:27,843 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 03:57:27,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 03:57:27,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:27" (1/1) ... [2023-12-16 03:57:27,864 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:27" (1/1) ... [2023-12-16 03:57:27,918 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 353 [2023-12-16 03:57:27,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 03:57:27,919 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 03:57:27,919 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 03:57:27,919 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 03:57:27,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:27" (1/1) ... [2023-12-16 03:57:27,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:27" (1/1) ... [2023-12-16 03:57:27,936 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:27" (1/1) ... [2023-12-16 03:57:27,991 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]. [2023-12-16 03:57:27,992 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:27" (1/1) ... [2023-12-16 03:57:27,992 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:27" (1/1) ... [2023-12-16 03:57:28,009 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:27" (1/1) ... [2023-12-16 03:57:28,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:27" (1/1) ... [2023-12-16 03:57:28,015 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:27" (1/1) ... [2023-12-16 03:57:28,018 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:27" (1/1) ... [2023-12-16 03:57:28,033 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 03:57:28,034 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 03:57:28,034 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 03:57:28,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 03:57:28,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:27" (1/1) ... [2023-12-16 03:57:28,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:57:28,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:57:28,069 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) [2023-12-16 03:57:28,100 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 [2023-12-16 03:57:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 03:57:28,113 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 03:57:28,114 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 03:57:28,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 03:57:28,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 03:57:28,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 03:57:28,227 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 03:57:28,228 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 03:57:28,948 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 03:57:29,056 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 03:57:29,056 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 03:57:29,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:57:29 BoogieIcfgContainer [2023-12-16 03:57:29,057 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 03:57:29,059 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 03:57:29,059 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 03:57:29,061 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 03:57:29,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:57:27" (1/3) ... [2023-12-16 03:57:29,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebd39e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:57:29, skipping insertion in model container [2023-12-16 03:57:29,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:57:27" (2/3) ... [2023-12-16 03:57:29,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebd39e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:57:29, skipping insertion in model container [2023-12-16 03:57:29,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:57:29" (3/3) ... [2023-12-16 03:57:29,064 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-19.i [2023-12-16 03:57:29,075 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 03:57:29,076 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 03:57:29,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 03:57:29,122 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;@41a72e92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 03:57:29,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 03:57:29,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 91 states have (on average 1.5494505494505495) internal successors, (141), 92 states have internal predecessors, (141), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-16 03:57:29,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-12-16 03:57:29,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:57:29,139 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:57:29,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:57:29,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:57:29,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1305655188, now seen corresponding path program 1 times [2023-12-16 03:57:29,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:57:29,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883527973] [2023-12-16 03:57:29,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:57:29,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:57:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:57:29,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:57:29,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883527973] [2023-12-16 03:57:29,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 03:57:29,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278015689] [2023-12-16 03:57:29,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:57:29,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:57:29,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:57:29,382 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) [2023-12-16 03:57:29,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 03:57:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:57:29,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 03:57:29,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:57:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2023-12-16 03:57:29,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:57:29,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278015689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:57:29,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:57:29,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:57:29,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834737958] [2023-12-16 03:57:29,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:57:29,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 03:57:29,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:57:29,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 03:57:29,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:57:29,749 INFO L87 Difference]: Start difference. First operand has 139 states, 91 states have (on average 1.5494505494505495) internal successors, (141), 92 states have internal predecessors, (141), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-16 03:57:29,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:57:29,902 INFO L93 Difference]: Finished difference Result 274 states and 503 transitions. [2023-12-16 03:57:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 03:57:29,905 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) Word has length 287 [2023-12-16 03:57:29,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:57:29,911 INFO L225 Difference]: With dead ends: 274 [2023-12-16 03:57:29,912 INFO L226 Difference]: Without dead ends: 136 [2023-12-16 03:57:29,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:57:29,917 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:57:29,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:57:29,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-16 03:57:29,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-12-16 03:57:29,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 89 states have (on average 1.4943820224719102) internal successors, (133), 89 states have internal predecessors, (133), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-16 03:57:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 223 transitions. [2023-12-16 03:57:29,968 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 223 transitions. Word has length 287 [2023-12-16 03:57:29,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:57:29,969 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 223 transitions. [2023-12-16 03:57:29,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-16 03:57:29,970 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 223 transitions. [2023-12-16 03:57:29,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-12-16 03:57:29,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:57:29,977 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:57:29,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 03:57:30,183 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 [2023-12-16 03:57:30,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:57:30,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:57:30,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1224780390, now seen corresponding path program 1 times [2023-12-16 03:57:30,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:57:30,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991549365] [2023-12-16 03:57:30,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:57:30,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:57:30,273 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:57:30,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932792203] [2023-12-16 03:57:30,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:57:30,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:57:30,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:57:30,277 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) [2023-12-16 03:57:30,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 03:57:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:57:30,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:57:30,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:57:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2023-12-16 03:57:30,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:57:30,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:57:30,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991549365] [2023-12-16 03:57:30,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:57:30,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932792203] [2023-12-16 03:57:30,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932792203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:57:30,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:57:30,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:57:30,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295817369] [2023-12-16 03:57:30,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:57:30,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:57:30,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:57:30,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:57:30,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:57:30,570 INFO L87 Difference]: Start difference. First operand 136 states and 223 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2023-12-16 03:57:30,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:57:30,651 INFO L93 Difference]: Finished difference Result 327 states and 535 transitions. [2023-12-16 03:57:30,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:57:30,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 287 [2023-12-16 03:57:30,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:57:30,657 INFO L225 Difference]: With dead ends: 327 [2023-12-16 03:57:30,657 INFO L226 Difference]: Without dead ends: 192 [2023-12-16 03:57:30,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:57:30,666 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 81 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:57:30,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 480 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:57:30,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-16 03:57:30,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2023-12-16 03:57:30,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 127 states have (on average 1.4960629921259843) internal successors, (190), 128 states have internal predecessors, (190), 59 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-16 03:57:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 308 transitions. [2023-12-16 03:57:30,697 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 308 transitions. Word has length 287 [2023-12-16 03:57:30,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:57:30,699 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 308 transitions. [2023-12-16 03:57:30,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2023-12-16 03:57:30,700 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 308 transitions. [2023-12-16 03:57:30,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-12-16 03:57:30,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:57:30,702 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:57:30,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 03:57:30,913 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 [2023-12-16 03:57:30,913 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:57:30,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:57:30,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1148736801, now seen corresponding path program 1 times [2023-12-16 03:57:30,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:57:30,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626616236] [2023-12-16 03:57:30,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:57:30,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:57:30,969 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:57:30,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624287200] [2023-12-16 03:57:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:57:30,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:57:30,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:57:30,971 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) [2023-12-16 03:57:30,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 03:57:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:57:31,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:57:31,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:57:31,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2023-12-16 03:57:31,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:57:31,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:57:31,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626616236] [2023-12-16 03:57:31,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:57:31,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624287200] [2023-12-16 03:57:31,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624287200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:57:31,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:57:31,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:57:31,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584749273] [2023-12-16 03:57:31,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:57:31,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:57:31,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:57:31,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:57:31,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:57:31,224 INFO L87 Difference]: Start difference. First operand 189 states and 308 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2023-12-16 03:57:31,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:57:31,297 INFO L93 Difference]: Finished difference Result 562 states and 916 transitions. [2023-12-16 03:57:31,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:57:31,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 288 [2023-12-16 03:57:31,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:57:31,303 INFO L225 Difference]: With dead ends: 562 [2023-12-16 03:57:31,303 INFO L226 Difference]: Without dead ends: 374 [2023-12-16 03:57:31,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:57:31,306 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 205 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:57:31,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 560 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:57:31,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-12-16 03:57:31,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 201. [2023-12-16 03:57:31,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 139 states have (on average 1.5035971223021583) internal successors, (209), 140 states have internal predecessors, (209), 59 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-16 03:57:31,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 327 transitions. [2023-12-16 03:57:31,334 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 327 transitions. Word has length 288 [2023-12-16 03:57:31,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:57:31,335 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 327 transitions. [2023-12-16 03:57:31,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2023-12-16 03:57:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 327 transitions. [2023-12-16 03:57:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-12-16 03:57:31,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:57:31,337 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:57:31,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 03:57:31,543 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 [2023-12-16 03:57:31,545 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:57:31,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:57:31,546 INFO L85 PathProgramCache]: Analyzing trace with hash 127668447, now seen corresponding path program 1 times [2023-12-16 03:57:31,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:57:31,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345327265] [2023-12-16 03:57:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:57:31,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:57:31,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:57:31,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863311219] [2023-12-16 03:57:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:57:31,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:57:31,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:57:31,669 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) [2023-12-16 03:57:31,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 03:57:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:57:31,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:57:31,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:57:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1752 proven. 90 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2023-12-16 03:57:32,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:57:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 42 proven. 90 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2023-12-16 03:57:32,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:57:32,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345327265] [2023-12-16 03:57:32,574 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:57:32,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863311219] [2023-12-16 03:57:32,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863311219] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:57:32,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:57:32,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 03:57:32,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112909410] [2023-12-16 03:57:32,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:57:32,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:57:32,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:57:32,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:57:32,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:57:32,577 INFO L87 Difference]: Start difference. First operand 201 states and 327 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-16 03:57:32,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:57:32,907 INFO L93 Difference]: Finished difference Result 431 states and 694 transitions. [2023-12-16 03:57:32,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 03:57:32,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 288 [2023-12-16 03:57:32,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:57:32,910 INFO L225 Difference]: With dead ends: 431 [2023-12-16 03:57:32,910 INFO L226 Difference]: Without dead ends: 231 [2023-12-16 03:57:32,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 568 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:57:32,912 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 246 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 03:57:32,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 418 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 03:57:32,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-12-16 03:57:32,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 222. [2023-12-16 03:57:32,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 145 states have (on average 1.4413793103448276) internal successors, (209), 147 states have internal predecessors, (209), 73 states have call successors, (73), 3 states have call predecessors, (73), 3 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-16 03:57:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 355 transitions. [2023-12-16 03:57:32,931 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 355 transitions. Word has length 288 [2023-12-16 03:57:32,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:57:32,934 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 355 transitions. [2023-12-16 03:57:32,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-16 03:57:32,934 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 355 transitions. [2023-12-16 03:57:32,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-12-16 03:57:32,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:57:32,936 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:57:32,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 03:57:33,142 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 [2023-12-16 03:57:33,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:57:33,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:57:33,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1979309825, now seen corresponding path program 1 times [2023-12-16 03:57:33,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:57:33,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748636567] [2023-12-16 03:57:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:57:33,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:57:33,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:57:33,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1648700840] [2023-12-16 03:57:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:57:33,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:57:33,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:57:33,173 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) [2023-12-16 03:57:33,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 03:57:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:57:33,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 03:57:33,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:57:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1518 proven. 99 refuted. 0 times theorem prover too weak. 2343 trivial. 0 not checked. [2023-12-16 03:57:33,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:57:34,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 33 proven. 99 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2023-12-16 03:57:34,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:57:34,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748636567] [2023-12-16 03:57:34,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:57:34,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648700840] [2023-12-16 03:57:34,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648700840] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:57:34,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:57:34,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-16 03:57:34,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369055428] [2023-12-16 03:57:34,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:57:34,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 03:57:34,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:57:34,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 03:57:34,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 03:57:34,050 INFO L87 Difference]: Start difference. First operand 222 states and 355 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-16 03:57:34,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:57:34,569 INFO L93 Difference]: Finished difference Result 662 states and 1028 transitions. [2023-12-16 03:57:34,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 03:57:34,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 288 [2023-12-16 03:57:34,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:57:34,572 INFO L225 Difference]: With dead ends: 662 [2023-12-16 03:57:34,572 INFO L226 Difference]: Without dead ends: 462 [2023-12-16 03:57:34,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 567 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-16 03:57:34,574 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 288 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 03:57:34,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 741 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 03:57:34,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-12-16 03:57:34,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 414. [2023-12-16 03:57:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 270 states have (on average 1.4) internal successors, (378), 274 states have internal predecessors, (378), 132 states have call successors, (132), 11 states have call predecessors, (132), 11 states have return successors, (132), 128 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-16 03:57:34,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 642 transitions. [2023-12-16 03:57:34,617 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 642 transitions. Word has length 288 [2023-12-16 03:57:34,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:57:34,617 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 642 transitions. [2023-12-16 03:57:34,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-16 03:57:34,618 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 642 transitions. [2023-12-16 03:57:34,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-12-16 03:57:34,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:57:34,620 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:57:34,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 03:57:34,831 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 [2023-12-16 03:57:34,831 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:57:34,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:57:34,832 INFO L85 PathProgramCache]: Analyzing trace with hash -190934721, now seen corresponding path program 1 times [2023-12-16 03:57:34,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:57:34,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158951847] [2023-12-16 03:57:34,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:57:34,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:57:34,857 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:57:34,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142785252] [2023-12-16 03:57:34,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:57:34,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:57:34,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:57:34,859 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) [2023-12-16 03:57:34,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 03:57:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:57:35,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-16 03:57:35,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:57:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1682 proven. 93 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2023-12-16 03:57:35,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:57:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 39 proven. 93 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2023-12-16 03:57:36,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:57:36,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158951847] [2023-12-16 03:57:36,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:57:36,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142785252] [2023-12-16 03:57:36,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142785252] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:57:36,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:57:36,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 17 [2023-12-16 03:57:36,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688066669] [2023-12-16 03:57:36,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:57:36,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 03:57:36,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:57:36,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 03:57:36,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-12-16 03:57:36,475 INFO L87 Difference]: Start difference. First operand 414 states and 642 transitions. Second operand has 17 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 4 states have call successors, (90), 3 states have call predecessors, (90), 5 states have return successors, (90), 4 states have call predecessors, (90), 4 states have call successors, (90) [2023-12-16 03:57:40,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:57:40,075 INFO L93 Difference]: Finished difference Result 2981 states and 4627 transitions. [2023-12-16 03:57:40,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-16 03:57:40,076 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 4 states have call successors, (90), 3 states have call predecessors, (90), 5 states have return successors, (90), 4 states have call predecessors, (90), 4 states have call successors, (90) Word has length 288 [2023-12-16 03:57:40,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:57:40,084 INFO L225 Difference]: With dead ends: 2981 [2023-12-16 03:57:40,084 INFO L226 Difference]: Without dead ends: 2592 [2023-12-16 03:57:40,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 568 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2524 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1544, Invalid=4936, Unknown=0, NotChecked=0, Total=6480 [2023-12-16 03:57:40,088 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 3456 mSDsluCounter, 2957 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 787 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3490 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 787 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-16 03:57:40,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3490 Valid, 3324 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [787 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-16 03:57:40,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2023-12-16 03:57:40,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 344. [2023-12-16 03:57:40,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 234 states have (on average 1.3632478632478633) internal successors, (319), 235 states have internal predecessors, (319), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-16 03:57:40,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 519 transitions. [2023-12-16 03:57:40,162 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 519 transitions. Word has length 288 [2023-12-16 03:57:40,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:57:40,162 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 519 transitions. [2023-12-16 03:57:40,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 4 states have call successors, (90), 3 states have call predecessors, (90), 5 states have return successors, (90), 4 states have call predecessors, (90), 4 states have call successors, (90) [2023-12-16 03:57:40,163 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 519 transitions. [2023-12-16 03:57:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-12-16 03:57:40,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:57:40,172 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:57:40,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-16 03:57:40,385 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 [2023-12-16 03:57:40,386 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:57:40,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:57:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash -700407811, now seen corresponding path program 1 times [2023-12-16 03:57:40,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:57:40,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804875756] [2023-12-16 03:57:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:57:40,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:57:40,434 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:57:40,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952767749] [2023-12-16 03:57:40,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:57:40,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:57:40,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:57:40,435 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) [2023-12-16 03:57:40,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 03:57:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:57:40,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 03:57:40,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:57:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1139 proven. 234 refuted. 0 times theorem prover too weak. 2587 trivial. 0 not checked. [2023-12-16 03:57:41,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:57:42,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 24 proven. 237 refuted. 0 times theorem prover too weak. 3699 trivial. 0 not checked. [2023-12-16 03:57:42,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:57:42,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804875756] [2023-12-16 03:57:42,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:57:42,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952767749] [2023-12-16 03:57:42,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952767749] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:57:42,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:57:42,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-12-16 03:57:42,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252311735] [2023-12-16 03:57:42,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:57:42,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 03:57:42,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:57:42,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 03:57:42,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-12-16 03:57:42,401 INFO L87 Difference]: Start difference. First operand 344 states and 519 transitions. Second operand has 20 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 20 states have internal predecessors, (119), 6 states have call successors, (90), 4 states have call predecessors, (90), 8 states have return successors, (90), 6 states have call predecessors, (90), 6 states have call successors, (90) [2023-12-16 03:57:43,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:57:43,862 INFO L93 Difference]: Finished difference Result 835 states and 1259 transitions. [2023-12-16 03:57:43,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-16 03:57:43,877 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 20 states have internal predecessors, (119), 6 states have call successors, (90), 4 states have call predecessors, (90), 8 states have return successors, (90), 6 states have call predecessors, (90), 6 states have call successors, (90) Word has length 288 [2023-12-16 03:57:43,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:57:43,881 INFO L225 Difference]: With dead ends: 835 [2023-12-16 03:57:43,882 INFO L226 Difference]: Without dead ends: 585 [2023-12-16 03:57:43,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=482, Invalid=1240, Unknown=0, NotChecked=0, Total=1722 [2023-12-16 03:57:43,884 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 1309 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:57:43,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 1198 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 03:57:43,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-12-16 03:57:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 352. [2023-12-16 03:57:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 240 states have (on average 1.35) internal successors, (324), 241 states have internal predecessors, (324), 100 states have call successors, (100), 11 states have call predecessors, (100), 11 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-16 03:57:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 524 transitions. [2023-12-16 03:57:43,943 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 524 transitions. Word has length 288 [2023-12-16 03:57:43,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:57:43,951 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 524 transitions. [2023-12-16 03:57:43,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 20 states have internal predecessors, (119), 6 states have call successors, (90), 4 states have call predecessors, (90), 8 states have return successors, (90), 6 states have call predecessors, (90), 6 states have call successors, (90) [2023-12-16 03:57:43,951 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 524 transitions. [2023-12-16 03:57:43,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-12-16 03:57:43,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:57:43,954 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:57:43,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 03:57:44,160 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 [2023-12-16 03:57:44,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:57:44,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:57:44,161 INFO L85 PathProgramCache]: Analyzing trace with hash -425648197, now seen corresponding path program 1 times [2023-12-16 03:57:44,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:57:44,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561971157] [2023-12-16 03:57:44,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:57:44,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:57:44,209 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:57:44,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482881701] [2023-12-16 03:57:44,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:57:44,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:57:44,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:57:44,240 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) [2023-12-16 03:57:44,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 03:57:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:57:44,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-16 03:57:44,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:57:47,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 2466 proven. 411 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2023-12-16 03:57:47,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:58:06,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 177 proven. 333 refuted. 0 times theorem prover too weak. 3450 trivial. 0 not checked. [2023-12-16 03:58:06,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:58:06,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561971157] [2023-12-16 03:58:06,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:58:06,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482881701] [2023-12-16 03:58:06,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482881701] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:58:06,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:58:06,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 44 [2023-12-16 03:58:06,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748977272] [2023-12-16 03:58:06,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:58:06,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-16 03:58:06,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:58:06,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-16 03:58:06,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=1527, Unknown=1, NotChecked=0, Total=1892 [2023-12-16 03:58:06,125 INFO L87 Difference]: Start difference. First operand 352 states and 524 transitions. Second operand has 44 states, 42 states have (on average 3.880952380952381) internal successors, (163), 40 states have internal predecessors, (163), 12 states have call successors, (90), 7 states have call predecessors, (90), 14 states have return successors, (90), 12 states have call predecessors, (90), 12 states have call successors, (90) [2023-12-16 03:58:18,569 WARN L293 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 101 DAG size of output: 77 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-16 03:58:28,567 WARN L293 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 106 DAG size of output: 81 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-16 03:58:38,356 WARN L293 SmtUtils]: Spent 9.10s on a formula simplification. DAG size of input: 94 DAG size of output: 70 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-16 03:58:41,846 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 [2023-12-16 03:58:41,846 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 03:58:41,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-16 03:58:41,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5121 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=3728, Invalid=12783, Unknown=1, NotChecked=0, Total=16512 [2023-12-16 03:58:41,862 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 3045 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 2435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-16 03:58:41,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3045 Valid, 1094 Invalid, 2435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [698 Valid, 1737 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-16 03:58:41,863 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 03:58:41,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 03:58:42,082 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 [2023-12-16 03:58:42,082 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (352states) and FLOYD_HOARE automaton (currently 87 states, 44 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 129 known predicates. [2023-12-16 03:58:42,086 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:58:42,087 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 03:58:42,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:58:42 BoogieIcfgContainer [2023-12-16 03:58:42,088 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 03:58:42,089 INFO L158 Benchmark]: Toolchain (without parser) took 74539.27ms. Allocated memory was 186.6MB in the beginning and 556.8MB in the end (delta: 370.1MB). Free memory was 145.4MB in the beginning and 332.6MB in the end (delta: -187.2MB). Peak memory consumption was 184.5MB. Max. memory is 8.0GB. [2023-12-16 03:58:42,089 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 186.6MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 03:58:42,089 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.38ms. Allocated memory is still 186.6MB. Free memory was 145.0MB in the beginning and 120.8MB in the end (delta: 24.2MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-16 03:58:42,089 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.41ms. Allocated memory is still 186.6MB. Free memory was 120.8MB in the beginning and 110.2MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 03:58:42,089 INFO L158 Benchmark]: Boogie Preprocessor took 114.74ms. Allocated memory was 186.6MB in the beginning and 256.9MB in the end (delta: 70.3MB). Free memory was 110.2MB in the beginning and 218.4MB in the end (delta: -108.2MB). Peak memory consumption was 32.3MB. Max. memory is 8.0GB. [2023-12-16 03:58:42,089 INFO L158 Benchmark]: RCFGBuilder took 1022.68ms. Allocated memory is still 256.9MB. Free memory was 218.4MB in the beginning and 157.0MB in the end (delta: 61.3MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. [2023-12-16 03:58:42,090 INFO L158 Benchmark]: TraceAbstraction took 73029.50ms. Allocated memory was 256.9MB in the beginning and 556.8MB in the end (delta: 299.9MB). Free memory was 156.5MB in the beginning and 332.6MB in the end (delta: -176.1MB). Peak memory consumption was 123.9MB. Max. memory is 8.0GB. [2023-12-16 03:58:42,090 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 186.6MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 292.38ms. Allocated memory is still 186.6MB. Free memory was 145.0MB in the beginning and 120.8MB in the end (delta: 24.2MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 75.41ms. Allocated memory is still 186.6MB. Free memory was 120.8MB in the beginning and 110.2MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 114.74ms. Allocated memory was 186.6MB in the beginning and 256.9MB in the end (delta: 70.3MB). Free memory was 110.2MB in the beginning and 218.4MB in the end (delta: -108.2MB). Peak memory consumption was 32.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1022.68ms. Allocated memory is still 256.9MB. Free memory was 218.4MB in the beginning and 157.0MB in the end (delta: 61.3MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. * TraceAbstraction took 73029.50ms. Allocated memory was 256.9MB in the beginning and 556.8MB in the end (delta: 299.9MB). Free memory was 156.5MB in the beginning and 332.6MB in the end (delta: -176.1MB). Peak memory consumption was 123.9MB. 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 constructing difference of abstraction (352states) and FLOYD_HOARE automaton (currently 87 states, 44 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 129 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 139 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 73.0s, OverallIterations: 8, TraceHistogramMax: 45, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 42.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8699 SdHoareTripleChecker+Valid, 8.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8630 mSDsluCounter, 8035 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6084 mSDsCounter, 1999 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5758 IncrementalHoareTripleChecker+Invalid, 7757 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1999 mSolverCounterUnsat, 1951 mSDtfsCounter, 5758 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3955 GetRequests, 3675 SyntacticMatches, 5 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8122 ImplicationChecksByTransitivity, 42.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=414occurred in iteration=5, InterpolantAutomatonStates: 135, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 2714 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 26.5s InterpolantComputationTime, 2589 NumberOfCodeBlocks, 2589 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3729 ConstructedInterpolants, 0 QuantifiedInterpolants, 27174 SizeOfPredicates, 42 NumberOfNonLiveVariables, 5621 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 49701/51480 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