/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_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-59.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 09:49:58,755 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 09:49:58,802 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 09:49:58,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 09:49:58,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 09:49:58,828 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 09:49:58,829 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 09:49:58,829 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 09:49:58,830 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 09:49:58,830 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 09:49:58,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 09:49:58,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 09:49:58,831 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 09:49:58,831 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 09:49:58,831 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 09:49:58,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 09:49:58,832 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 09:49:58,832 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 09:49:58,833 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 09:49:58,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 09:49:58,833 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 09:49:58,834 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 09:49:58,834 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 09:49:58,834 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 09:49:58,835 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 09:49:58,835 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 09:49:58,835 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 09:49:58,836 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 09:49:58,836 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 09:49:58,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 09:49:58,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 09:49:58,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 09:49:58,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 09:49:58,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 09:49:58,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 09:49:58,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 09:49:58,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 09:49:58,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 09:49:58,839 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 09:49:58,839 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 09:49:58,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 09:49:58,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 09:49:58,840 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 09:49:58,840 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 09:49:58,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 09:49:58,840 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 09:49:58,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 09:49:59,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 09:49:59,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 09:49:59,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 09:49:59,062 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 09:49:59,062 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 09:49:59,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-59.i [2023-12-24 09:50:00,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 09:50:00,603 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 09:50:00,603 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-59.i [2023-12-24 09:50:00,620 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/332d9783a/a3690c0edfae4b119fbf47c850c37070/FLAGcd918a041 [2023-12-24 09:50:00,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/332d9783a/a3690c0edfae4b119fbf47c850c37070 [2023-12-24 09:50:00,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 09:50:00,640 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 09:50:00,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 09:50:00,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 09:50:00,648 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 09:50:00,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 09:50:00" (1/1) ... [2023-12-24 09:50:00,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f5475d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:50:00, skipping insertion in model container [2023-12-24 09:50:00,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 09:50:00" (1/1) ... [2023-12-24 09:50:00,714 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 09:50:00,834 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_amount500_file-59.i[916,929] [2023-12-24 09:50:01,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 09:50:01,113 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 09:50:01,122 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_amount500_file-59.i[916,929] [2023-12-24 09:50:01,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 09:50:01,271 INFO L206 MainTranslator]: Completed translation [2023-12-24 09:50:01,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:50:01 WrapperNode [2023-12-24 09:50:01,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 09:50:01,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 09:50:01,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 09:50:01,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 09:50:01,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:50:01" (1/1) ... [2023-12-24 09:50:01,307 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:50:01" (1/1) ... [2023-12-24 09:50:01,374 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 585 [2023-12-24 09:50:01,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 09:50:01,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 09:50:01,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 09:50:01,376 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 09:50:01,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:50:01" (1/1) ... [2023-12-24 09:50:01,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:50:01" (1/1) ... [2023-12-24 09:50:01,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:50:01" (1/1) ... [2023-12-24 09:50:01,468 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]. [2023-12-24 09:50:01,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:50:01" (1/1) ... [2023-12-24 09:50:01,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:50:01" (1/1) ... [2023-12-24 09:50:01,508 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:50:01" (1/1) ... [2023-12-24 09:50:01,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:50:01" (1/1) ... [2023-12-24 09:50:01,531 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:50:01" (1/1) ... [2023-12-24 09:50:01,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:50:01" (1/1) ... [2023-12-24 09:50:01,544 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 09:50:01,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 09:50:01,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 09:50:01,545 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 09:50:01,546 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:50:01" (1/1) ... [2023-12-24 09:50:01,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 09:50:01,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 09:50:01,577 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) [2023-12-24 09:50:01,608 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 [2023-12-24 09:50:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 09:50:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 09:50:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 09:50:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 09:50:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 09:50:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 09:50:01,780 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 09:50:01,784 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 09:51:13,764 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 09:51:13,843 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 09:51:13,843 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 09:51:13,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 09:51:13 BoogieIcfgContainer [2023-12-24 09:51:13,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 09:51:13,847 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 09:51:13,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 09:51:13,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 09:51:13,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 09:50:00" (1/3) ... [2023-12-24 09:51:13,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1225758d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 09:51:13, skipping insertion in model container [2023-12-24 09:51:13,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 09:50:01" (2/3) ... [2023-12-24 09:51:13,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1225758d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 09:51:13, skipping insertion in model container [2023-12-24 09:51:13,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 09:51:13" (3/3) ... [2023-12-24 09:51:13,852 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-59.i [2023-12-24 09:51:13,867 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 09:51:13,867 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 09:51:13,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 09:51:13,945 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;@61de63e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 09:51:13,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 09:51:13,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 223 states, 160 states have (on average 1.59375) internal successors, (255), 161 states have internal predecessors, (255), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 09:51:13,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-12-24 09:51:13,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:51:13,984 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:51:13,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:51:13,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:51:13,991 INFO L85 PathProgramCache]: Analyzing trace with hash 689891899, now seen corresponding path program 1 times [2023-12-24 09:51:14,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:51:14,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786004195] [2023-12-24 09:51:14,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:51:14,011 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:51:14,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:51:14,016 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:51:14,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 09:51:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:51:18,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 09:51:18,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:51:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3070 proven. 0 refuted. 0 times theorem prover too weak. 4010 trivial. 0 not checked. [2023-12-24 09:51:18,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:51:18,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:51:18,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786004195] [2023-12-24 09:51:18,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786004195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:51:18,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 09:51:18,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 09:51:18,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913791787] [2023-12-24 09:51:18,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:51:18,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 09:51:18,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:51:18,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 09:51:18,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 09:51:18,282 INFO L87 Difference]: Start difference. First operand has 223 states, 160 states have (on average 1.59375) internal successors, (255), 161 states have internal predecessors, (255), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Second operand has 2 states, 2 states have (on average 60.5) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2023-12-24 09:51:25,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:51:25,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:51:25,257 INFO L93 Difference]: Finished difference Result 442 states and 806 transitions. [2023-12-24 09:51:26,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 09:51:26,247 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 60.5) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 414 [2023-12-24 09:51:26,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:51:26,256 INFO L225 Difference]: With dead ends: 442 [2023-12-24 09:51:26,256 INFO L226 Difference]: Without dead ends: 220 [2023-12-24 09:51:26,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 09:51:26,264 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-24 09:51:26,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 364 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2023-12-24 09:51:26,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-24 09:51:26,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2023-12-24 09:51:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 158 states have (on average 1.5632911392405062) internal successors, (247), 158 states have internal predecessors, (247), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-24 09:51:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 367 transitions. [2023-12-24 09:51:26,328 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 367 transitions. Word has length 414 [2023-12-24 09:51:26,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:51:26,329 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 367 transitions. [2023-12-24 09:51:26,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 60.5) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2023-12-24 09:51:26,329 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 367 transitions. [2023-12-24 09:51:26,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-12-24 09:51:26,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:51:26,340 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:51:26,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 09:51:26,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:51:26,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:51:26,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:51:26,558 INFO L85 PathProgramCache]: Analyzing trace with hash -356624897, now seen corresponding path program 1 times [2023-12-24 09:51:26,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:51:26,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341507102] [2023-12-24 09:51:26,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:51:26,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:51:26,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:51:26,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:51:26,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 09:51:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:51:30,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:51:30,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:52:19,551 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 59 proven. 177 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-24 09:52:19,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:52:28,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:52:28,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341507102] [2023-12-24 09:52:28,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341507102] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:52:28,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2093206127] [2023-12-24 09:52:28,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:52:28,997 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:52:28,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:52:29,041 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:52:29,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-24 09:52:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:52:30,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 09:52:30,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:52:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-24 09:52:32,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:52:32,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2093206127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:52:32,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:52:32,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-24 09:52:32,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406270362] [2023-12-24 09:52:32,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:52:32,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 09:52:32,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:52:32,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 09:52:32,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:52:32,657 INFO L87 Difference]: Start difference. First operand 220 states and 367 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-24 09:52:39,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:52:43,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:52:47,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:52:48,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:52:48,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:52:48,643 INFO L93 Difference]: Finished difference Result 656 states and 1095 transitions. [2023-12-24 09:52:48,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 09:52:48,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 414 [2023-12-24 09:52:48,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:52:48,653 INFO L225 Difference]: With dead ends: 656 [2023-12-24 09:52:48,653 INFO L226 Difference]: Without dead ends: 437 [2023-12-24 09:52:48,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1234 GetRequests, 1224 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:52:48,655 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 340 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2023-12-24 09:52:48,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 718 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 3 Unknown, 0 Unchecked, 15.9s Time] [2023-12-24 09:52:48,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-12-24 09:52:48,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 435. [2023-12-24 09:52:48,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 312 states have (on average 1.5576923076923077) internal successors, (486), 312 states have internal predecessors, (486), 120 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-24 09:52:48,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 726 transitions. [2023-12-24 09:52:48,706 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 726 transitions. Word has length 414 [2023-12-24 09:52:48,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:52:48,707 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 726 transitions. [2023-12-24 09:52:48,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-24 09:52:48,707 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 726 transitions. [2023-12-24 09:52:48,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-12-24 09:52:48,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:52:48,712 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:52:48,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-24 09:52:49,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 09:52:49,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:52:49,127 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:52:49,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:52:49,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1241240831, now seen corresponding path program 1 times [2023-12-24 09:52:49,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:52:49,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702081795] [2023-12-24 09:52:49,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:52:49,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:52:49,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:52:49,132 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:52:49,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 09:52:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:52:52,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:52:52,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:53:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 59 proven. 177 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-24 09:53:43,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:53:52,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:53:52,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702081795] [2023-12-24 09:53:52,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702081795] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:53:52,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2016614192] [2023-12-24 09:53:52,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:53:52,596 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:53:52,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:53:52,602 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:53:52,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-24 09:53:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:53:54,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 09:53:54,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:53:55,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-24 09:53:55,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:53:55,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2016614192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:53:55,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:53:55,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-24 09:53:55,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007473800] [2023-12-24 09:53:55,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:53:55,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 09:53:55,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:53:55,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 09:53:55,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:53:55,077 INFO L87 Difference]: Start difference. First operand 435 states and 726 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-24 09:53:56,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:54:01,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:54:08,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:54:12,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:54:16,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:54:17,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:54:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:54:17,795 INFO L93 Difference]: Finished difference Result 1183 states and 1972 transitions. [2023-12-24 09:54:17,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 09:54:17,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 414 [2023-12-24 09:54:17,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:54:17,803 INFO L225 Difference]: With dead ends: 1183 [2023-12-24 09:54:17,804 INFO L226 Difference]: Without dead ends: 749 [2023-12-24 09:54:17,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1234 GetRequests, 1224 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:54:17,807 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 251 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2023-12-24 09:54:17,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 739 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 4 Unknown, 0 Unchecked, 22.7s Time] [2023-12-24 09:54:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-24 09:54:17,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 745. [2023-12-24 09:54:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 556 states have (on average 1.5503597122302157) internal successors, (862), 558 states have internal predecessors, (862), 184 states have call successors, (184), 4 states have call predecessors, (184), 4 states have return successors, (184), 182 states have call predecessors, (184), 184 states have call successors, (184) [2023-12-24 09:54:17,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1230 transitions. [2023-12-24 09:54:17,870 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1230 transitions. Word has length 414 [2023-12-24 09:54:17,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:54:17,871 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 1230 transitions. [2023-12-24 09:54:17,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-24 09:54:17,871 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1230 transitions. [2023-12-24 09:54:17,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-12-24 09:54:17,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:54:17,875 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:54:17,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-24 09:54:18,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-24 09:54:18,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 09:54:18,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:54:18,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:54:18,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1664887553, now seen corresponding path program 1 times [2023-12-24 09:54:18,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:54:18,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230327710] [2023-12-24 09:54:18,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:54:18,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:54:18,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:54:18,290 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:54:18,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 09:54:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:54:22,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:54:22,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:55:15,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 59 proven. 177 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-24 09:55:15,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:55:25,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:55:25,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230327710] [2023-12-24 09:55:25,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230327710] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:55:25,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1403306088] [2023-12-24 09:55:25,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:55:25,086 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:55:25,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:55:25,087 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:55:25,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-24 09:55:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:55:26,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 09:55:26,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:55:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-24 09:55:28,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:55:28,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1403306088] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:55:28,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:55:28,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-24 09:55:28,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519303965] [2023-12-24 09:55:28,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:55:28,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 09:55:28,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:55:28,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 09:55:28,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:55:28,439 INFO L87 Difference]: Start difference. First operand 745 states and 1230 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-24 09:55:35,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:55:39,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:55:43,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:55:44,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:55:46,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:55:46,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:55:46,269 INFO L93 Difference]: Finished difference Result 2233 states and 3688 transitions. [2023-12-24 09:55:46,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 09:55:46,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 414 [2023-12-24 09:55:46,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:55:46,285 INFO L225 Difference]: With dead ends: 2233 [2023-12-24 09:55:46,285 INFO L226 Difference]: Without dead ends: 1489 [2023-12-24 09:55:46,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1234 GetRequests, 1224 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:55:46,289 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 347 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2023-12-24 09:55:46,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 957 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 3 Unknown, 0 Unchecked, 17.8s Time] [2023-12-24 09:55:46,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2023-12-24 09:55:46,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1487. [2023-12-24 09:55:46,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1110 states have (on average 1.5441441441441441) internal successors, (1714), 1114 states have internal predecessors, (1714), 368 states have call successors, (368), 8 states have call predecessors, (368), 8 states have return successors, (368), 364 states have call predecessors, (368), 368 states have call successors, (368) [2023-12-24 09:55:46,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2450 transitions. [2023-12-24 09:55:46,400 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2450 transitions. Word has length 414 [2023-12-24 09:55:46,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:55:46,408 INFO L495 AbstractCegarLoop]: Abstraction has 1487 states and 2450 transitions. [2023-12-24 09:55:46,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-24 09:55:46,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2450 transitions. [2023-12-24 09:55:46,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-12-24 09:55:46,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:55:46,412 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:55:46,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 09:55:46,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-24 09:55:46,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 09:55:46,813 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:55:46,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:55:46,814 INFO L85 PathProgramCache]: Analyzing trace with hash -180479613, now seen corresponding path program 1 times [2023-12-24 09:55:46,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:55:46,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231962354] [2023-12-24 09:55:46,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:55:46,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:55:46,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:55:46,816 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:55:46,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 09:55:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:55:50,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:55:50,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:56:44,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 59 proven. 177 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-24 09:56:44,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:56:54,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:56:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231962354] [2023-12-24 09:56:54,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231962354] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:56:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1998820321] [2023-12-24 09:56:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:56:54,395 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:56:54,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:56:54,397 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:56:54,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-24 09:56:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:56:56,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 09:56:56,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:56:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-24 09:56:57,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:56:57,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1998820321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:56:57,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:56:57,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-24 09:56:57,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607189083] [2023-12-24 09:56:57,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:56:57,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 09:56:57,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:56:57,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 09:56:57,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:56:57,836 INFO L87 Difference]: Start difference. First operand 1487 states and 2450 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-24 09:57:05,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:57:09,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:57:13,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:57:15,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:57:15,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 09:57:15,171 INFO L93 Difference]: Finished difference Result 4447 states and 7336 transitions. [2023-12-24 09:57:15,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 09:57:15,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 414 [2023-12-24 09:57:15,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 09:57:15,189 INFO L225 Difference]: With dead ends: 4447 [2023-12-24 09:57:15,190 INFO L226 Difference]: Without dead ends: 2961 [2023-12-24 09:57:15,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1234 GetRequests, 1224 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-24 09:57:15,197 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 343 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2023-12-24 09:57:15,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 743 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 3 Unknown, 0 Unchecked, 17.2s Time] [2023-12-24 09:57:15,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2023-12-24 09:57:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2931. [2023-12-24 09:57:15,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2931 states, 2178 states have (on average 1.5307621671258036) internal successors, (3334), 2186 states have internal predecessors, (3334), 736 states have call successors, (736), 16 states have call predecessors, (736), 16 states have return successors, (736), 728 states have call predecessors, (736), 736 states have call successors, (736) [2023-12-24 09:57:15,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2931 states to 2931 states and 4806 transitions. [2023-12-24 09:57:15,414 INFO L78 Accepts]: Start accepts. Automaton has 2931 states and 4806 transitions. Word has length 414 [2023-12-24 09:57:15,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 09:57:15,414 INFO L495 AbstractCegarLoop]: Abstraction has 2931 states and 4806 transitions. [2023-12-24 09:57:15,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-24 09:57:15,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2931 states and 4806 transitions. [2023-12-24 09:57:15,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-12-24 09:57:15,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 09:57:15,420 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 09:57:15,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 09:57:15,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-24 09:57:15,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 09:57:15,849 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 09:57:15,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 09:57:15,849 INFO L85 PathProgramCache]: Analyzing trace with hash -821767819, now seen corresponding path program 1 times [2023-12-24 09:57:15,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 09:57:15,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980416120] [2023-12-24 09:57:15,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:57:15,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 09:57:15,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 09:57:15,852 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 09:57:15,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 09:57:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:57:19,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:57:19,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:58:12,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 59 proven. 177 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-24 09:58:12,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 09:58:21,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 09:58:21,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980416120] [2023-12-24 09:58:21,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980416120] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 09:58:21,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [287326112] [2023-12-24 09:58:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 09:58:21,981 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 09:58:21,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 09:58:21,982 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 09:58:21,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-24 09:58:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 09:58:23,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 09:58:23,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 09:59:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-24 09:59:43,891 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 09:59:43,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [287326112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 09:59:43,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 09:59:43,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-24 09:59:43,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943927503] [2023-12-24 09:59:43,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 09:59:43,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 09:59:43,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 09:59:43,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 09:59:43,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-24 09:59:43,893 INFO L87 Difference]: Start difference. First operand 2931 states and 4806 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-24 09:59:47,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:59:54,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.93s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 09:59:58,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:00:00,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:00:07,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 7.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:00:11,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:00:15,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:00:15,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:00:15,606 INFO L93 Difference]: Finished difference Result 6987 states and 11449 transitions. [2023-12-24 10:00:16,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 10:00:16,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 414 [2023-12-24 10:00:16,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:00:16,823 INFO L225 Difference]: With dead ends: 6987 [2023-12-24 10:00:16,823 INFO L226 Difference]: Without dead ends: 4057 [2023-12-24 10:00:16,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1235 GetRequests, 1223 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-24 10:00:16,833 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 317 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 121 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2023-12-24 10:00:16,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 1065 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 31 Invalid, 5 Unknown, 0 Unchecked, 30.9s Time] [2023-12-24 10:00:16,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2023-12-24 10:00:17,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 3111. [2023-12-24 10:00:17,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3111 states, 2296 states have (on average 1.5278745644599303) internal successors, (3508), 2304 states have internal predecessors, (3508), 796 states have call successors, (796), 18 states have call predecessors, (796), 18 states have return successors, (796), 788 states have call predecessors, (796), 796 states have call successors, (796) [2023-12-24 10:00:17,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 5100 transitions. [2023-12-24 10:00:17,136 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 5100 transitions. Word has length 414 [2023-12-24 10:00:17,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:00:17,140 INFO L495 AbstractCegarLoop]: Abstraction has 3111 states and 5100 transitions. [2023-12-24 10:00:17,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-24 10:00:17,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 5100 transitions. [2023-12-24 10:00:17,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-12-24 10:00:17,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:00:17,146 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 10:00:17,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 10:00:17,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-24 10:00:17,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 10:00:17,573 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:00:17,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:00:17,573 INFO L85 PathProgramCache]: Analyzing trace with hash -404371213, now seen corresponding path program 1 times [2023-12-24 10:00:17,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:00:17,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909654507] [2023-12-24 10:00:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:00:17,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 10:00:17,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:00:17,577 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 10:00:17,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 10:00:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:00:21,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 10:00:21,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:01:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 59 proven. 177 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-24 10:01:16,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 10:01:26,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:01:26,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909654507] [2023-12-24 10:01:26,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909654507] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 10:01:26,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [870104051] [2023-12-24 10:01:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:01:26,461 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 10:01:26,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 10:01:26,463 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 10:01:26,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-24 10:01:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:01:28,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 10:01:28,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:01:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-24 10:01:35,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 10:01:35,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [870104051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 10:01:35,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 10:01:35,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-12-24 10:01:35,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234071151] [2023-12-24 10:01:35,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 10:01:35,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 10:01:35,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:01:35,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 10:01:35,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-24 10:01:35,706 INFO L87 Difference]: Start difference. First operand 3111 states and 5100 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-24 10:01:44,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.83s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:01:48,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:01:52,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:01:53,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:01:57,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 10:01:57,191 INFO L93 Difference]: Finished difference Result 7871 states and 12821 transitions. [2023-12-24 10:01:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 10:01:57,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 414 [2023-12-24 10:01:57,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 10:01:57,220 INFO L225 Difference]: With dead ends: 7871 [2023-12-24 10:01:57,220 INFO L226 Difference]: Without dead ends: 4941 [2023-12-24 10:01:57,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1236 GetRequests, 1224 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-24 10:01:57,231 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 370 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 150 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2023-12-24 10:01:57,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 842 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 105 Invalid, 3 Unknown, 0 Unchecked, 20.7s Time] [2023-12-24 10:01:57,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4941 states. [2023-12-24 10:01:57,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4941 to 3259. [2023-12-24 10:01:57,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3259 states, 2435 states have (on average 1.5207392197125256) internal successors, (3703), 2443 states have internal predecessors, (3703), 796 states have call successors, (796), 27 states have call predecessors, (796), 27 states have return successors, (796), 788 states have call predecessors, (796), 796 states have call successors, (796) [2023-12-24 10:01:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 5295 transitions. [2023-12-24 10:01:57,515 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 5295 transitions. Word has length 414 [2023-12-24 10:01:57,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 10:01:57,516 INFO L495 AbstractCegarLoop]: Abstraction has 3259 states and 5295 transitions. [2023-12-24 10:01:57,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-24 10:01:57,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 5295 transitions. [2023-12-24 10:01:57,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-12-24 10:01:57,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 10:01:57,520 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 10:01:57,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-12-24 10:01:57,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 10:01:57,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 10:01:57,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 10:01:57,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 10:01:57,935 INFO L85 PathProgramCache]: Analyzing trace with hash -798737999, now seen corresponding path program 1 times [2023-12-24 10:01:57,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 10:01:57,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326449901] [2023-12-24 10:01:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:01:57,936 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 10:01:57,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 10:01:57,937 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 10:01:57,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-24 10:02:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:02:02,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 10:02:02,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:02:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 59 proven. 177 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-24 10:02:57,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 10:03:07,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 10:03:07,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326449901] [2023-12-24 10:03:07,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326449901] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 10:03:07,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2067991892] [2023-12-24 10:03:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 10:03:07,953 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 10:03:07,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 10:03:07,955 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 10:03:07,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-24 10:03:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 10:03:09,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 10:03:09,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 10:03:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-24 10:03:22,083 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 10:03:22,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2067991892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 10:03:22,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 10:03:22,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2023-12-24 10:03:22,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516519500] [2023-12-24 10:03:22,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 10:03:22,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 10:03:22,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 10:03:22,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 10:03:22,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-12-24 10:03:22,086 INFO L87 Difference]: Start difference. First operand 3259 states and 5295 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-24 10:03:33,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:03:37,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:03:41,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:03:45,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:03:49,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:03:53,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:03:58,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:04:02,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:04:06,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:04:10,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 10:04:11,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-24 10:04:16,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 10:04:16,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1236 GetRequests, 1222 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-12-24 10:04:16,489 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 675 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 159 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.5s IncrementalHoareTripleChecker+Time [2023-12-24 10:04:16,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 1303 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 195 Invalid, 10 Unknown, 0 Unchecked, 53.5s Time] [2023-12-24 10:04:16,490 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 10:04:16,499 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 10:04:16,499 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 [2023-12-24 10:04:16,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-12-24 10:04:16,508 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 10:04:16,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-24 10:04:16,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 10:04:16,892 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (3259states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (3537 states constructed, input type IntersectNwa). [2023-12-24 10:04:16,895 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 10:04:16,897 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 10:04:16,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 10:04:16 BoogieIcfgContainer [2023-12-24 10:04:16,899 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 10:04:16,899 INFO L158 Benchmark]: Toolchain (without parser) took 856258.84ms. Allocated memory is still 299.9MB. Free memory was 252.2MB in the beginning and 187.6MB in the end (delta: 64.6MB). Peak memory consumption was 197.8MB. Max. memory is 8.0GB. [2023-12-24 10:04:16,899 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 203.4MB. Free memory is still 150.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 10:04:16,899 INFO L158 Benchmark]: CACSL2BoogieTranslator took 631.79ms. Allocated memory is still 299.9MB. Free memory was 251.7MB in the beginning and 216.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-12-24 10:04:16,899 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.63ms. Allocated memory is still 299.9MB. Free memory was 216.0MB in the beginning and 209.2MB in the end (delta: 6.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-24 10:04:16,900 INFO L158 Benchmark]: Boogie Preprocessor took 168.82ms. Allocated memory is still 299.9MB. Free memory was 209.2MB in the beginning and 185.1MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-24 10:04:16,900 INFO L158 Benchmark]: RCFGBuilder took 72298.69ms. Allocated memory is still 299.9MB. Free memory was 185.1MB in the beginning and 197.0MB in the end (delta: -11.9MB). Peak memory consumption was 33.8MB. Max. memory is 8.0GB. [2023-12-24 10:04:16,900 INFO L158 Benchmark]: TraceAbstraction took 783051.76ms. Allocated memory is still 299.9MB. Free memory was 196.4MB in the beginning and 187.6MB in the end (delta: 8.9MB). Peak memory consumption was 141.0MB. Max. memory is 8.0GB. [2023-12-24 10:04:16,901 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 203.4MB. Free memory is still 150.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 631.79ms. Allocated memory is still 299.9MB. Free memory was 251.7MB in the beginning and 216.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 99.63ms. Allocated memory is still 299.9MB. Free memory was 216.0MB in the beginning and 209.2MB in the end (delta: 6.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 168.82ms. Allocated memory is still 299.9MB. Free memory was 209.2MB in the beginning and 185.1MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * RCFGBuilder took 72298.69ms. Allocated memory is still 299.9MB. Free memory was 185.1MB in the beginning and 197.0MB in the end (delta: -11.9MB). Peak memory consumption was 33.8MB. Max. memory is 8.0GB. * TraceAbstraction took 783051.76ms. Allocated memory is still 299.9MB. Free memory was 196.4MB in the beginning and 187.6MB in the end (delta: 8.9MB). Peak memory consumption was 141.0MB. 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 (3259states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (3537 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 223 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 783.0s, OverallIterations: 8, TraceHistogramMax: 60, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 190.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 mSolverCounterUnknown, 2643 SdHoareTripleChecker+Valid, 185.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2643 mSDsluCounter, 6731 SdHoareTripleChecker+Invalid, 177.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3385 mSDsCounter, 456 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 402 IncrementalHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 456 mSolverCounterUnsat, 3346 mSDtfsCounter, 402 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9056 GetRequests, 8978 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 37.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3259occurred in iteration=7, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 2666 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 40.1s SatisfiabilityAnalysisTime, 545.6s InterpolantComputationTime, 6210 NumberOfCodeBlocks, 6210 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 6195 ConstructedInterpolants, 0 QuantifiedInterpolants, 31447 SizeOfPredicates, 57 NumberOfNonLiveVariables, 11307 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 104961/106200 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