/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_variablewrapping_wrapper-sp_file-16.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 19:15:00,889 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 19:15:00,962 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 19:15:00,965 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 19:15:00,965 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 19:15:00,988 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 19:15:00,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 19:15:00,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 19:15:00,990 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 19:15:00,993 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 19:15:00,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 19:15:00,993 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 19:15:00,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 19:15:00,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 19:15:00,995 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 19:15:00,995 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 19:15:00,995 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 19:15:00,995 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 19:15:00,996 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 19:15:00,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 19:15:00,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 19:15:00,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 19:15:00,996 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 19:15:00,997 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 19:15:00,997 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 19:15:00,997 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 19:15:00,997 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 19:15:00,997 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 19:15:00,997 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 19:15:00,997 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 19:15:00,998 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 19:15:00,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 19:15:00,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 19:15:00,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 19:15:00,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 19:15:00,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 19:15:00,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 19:15:00,999 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 19:15:00,999 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 19:15:00,999 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 19:15:00,999 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 19:15:01,000 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 19:15:01,000 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 19:15:01,000 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 19:15:01,000 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 19:15:01,001 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 19:15:01,001 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 19:15:01,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 19:15:01,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 19:15:01,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 19:15:01,212 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 19:15:01,213 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 19:15:01,213 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-16.i [2023-12-24 19:15:02,312 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 19:15:02,459 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 19:15:02,459 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-16.i [2023-12-24 19:15:02,465 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa8849516/625f23b486284a03b86846d004c51983/FLAG1941e74b9 [2023-12-24 19:15:02,477 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa8849516/625f23b486284a03b86846d004c51983 [2023-12-24 19:15:02,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 19:15:02,480 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 19:15:02,481 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 19:15:02,481 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 19:15:02,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 19:15:02,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 07:15:02" (1/1) ... [2023-12-24 19:15:02,486 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f9d5ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:15:02, skipping insertion in model container [2023-12-24 19:15:02,486 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 07:15:02" (1/1) ... [2023-12-24 19:15:02,516 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 19:15:02,617 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_variablewrapping_wrapper-sp_file-16.i[917,930] [2023-12-24 19:15:02,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 19:15:02,674 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 19:15:02,690 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_variablewrapping_wrapper-sp_file-16.i[917,930] [2023-12-24 19:15:02,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 19:15:02,764 INFO L206 MainTranslator]: Completed translation [2023-12-24 19:15:02,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:15:02 WrapperNode [2023-12-24 19:15:02,765 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 19:15:02,766 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 19:15:02,766 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 19:15:02,766 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 19:15:02,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:15:02" (1/1) ... [2023-12-24 19:15:02,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:15:02" (1/1) ... [2023-12-24 19:15:02,824 INFO L138 Inliner]: procedures = 33, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 470 [2023-12-24 19:15:02,824 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 19:15:02,825 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 19:15:02,825 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 19:15:02,825 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 19:15:02,838 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:15:02" (1/1) ... [2023-12-24 19:15:02,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:15:02" (1/1) ... [2023-12-24 19:15:02,846 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:15:02" (1/1) ... [2023-12-24 19:15:02,880 INFO L175 MemorySlicer]: Split 124 memory accesses to 2 slices as follows [2, 122]. 98 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [2, 14]. The 17 writes are split as follows [0, 17]. [2023-12-24 19:15:02,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:15:02" (1/1) ... [2023-12-24 19:15:02,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:15:02" (1/1) ... [2023-12-24 19:15:02,892 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:15:02" (1/1) ... [2023-12-24 19:15:02,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:15:02" (1/1) ... [2023-12-24 19:15:02,897 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:15:02" (1/1) ... [2023-12-24 19:15:02,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:15:02" (1/1) ... [2023-12-24 19:15:02,902 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 19:15:02,903 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 19:15:02,903 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 19:15:02,903 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 19:15:02,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:15:02" (1/1) ... [2023-12-24 19:15:02,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 19:15:02,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 19:15:02,927 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 19:15:02,969 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 19:15:02,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 19:15:02,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 19:15:02,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 19:15:02,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 19:15:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 19:15:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 19:15:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 19:15:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 19:15:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 19:15:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 19:15:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 19:15:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 19:15:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 19:15:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 19:15:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 19:15:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 19:15:02,987 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 19:15:02,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 19:15:02,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 19:15:02,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 19:15:02,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 19:15:02,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 19:15:02,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 19:15:03,108 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 19:15:03,110 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 19:15:06,194 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 19:15:06,240 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 19:15:06,241 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 19:15:06,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 07:15:06 BoogieIcfgContainer [2023-12-24 19:15:06,241 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 19:15:06,242 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 19:15:06,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 19:15:06,245 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 19:15:06,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 07:15:02" (1/3) ... [2023-12-24 19:15:06,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e373b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 07:15:06, skipping insertion in model container [2023-12-24 19:15:06,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:15:02" (2/3) ... [2023-12-24 19:15:06,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e373b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 07:15:06, skipping insertion in model container [2023-12-24 19:15:06,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 07:15:06" (3/3) ... [2023-12-24 19:15:06,246 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-16.i [2023-12-24 19:15:06,258 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 19:15:06,258 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 19:15:06,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 19:15:06,311 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;@20949f3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 19:15:06,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 19:15:06,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 79 states have (on average 1.4303797468354431) internal successors, (113), 80 states have internal predecessors, (113), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-24 19:15:06,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 19:15:06,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:15:06,335 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:06,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:15:06,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:15:06,341 INFO L85 PathProgramCache]: Analyzing trace with hash -236992974, now seen corresponding path program 1 times [2023-12-24 19:15:06,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:15:06,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516956456] [2023-12-24 19:15:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:15:06,352 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 19:15:06,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:15:06,374 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 19:15:06,408 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 19:15:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:15:06,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 19:15:06,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:15:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2023-12-24 19:15:06,863 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 19:15:06,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:15:06,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516956456] [2023-12-24 19:15:06,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516956456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 19:15:06,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 19:15:06,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 19:15:06,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569291786] [2023-12-24 19:15:06,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 19:15:06,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 19:15:06,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:15:06,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 19:15:06,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 19:15:06,907 INFO L87 Difference]: Start difference. First operand has 103 states, 79 states have (on average 1.4303797468354431) internal successors, (113), 80 states have internal predecessors, (113), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-24 19:15:06,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:15:06,951 INFO L93 Difference]: Finished difference Result 199 states and 323 transitions. [2023-12-24 19:15:06,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 19:15:06,953 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 152 [2023-12-24 19:15:06,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:15:06,958 INFO L225 Difference]: With dead ends: 199 [2023-12-24 19:15:06,958 INFO L226 Difference]: Without dead ends: 97 [2023-12-24 19:15:06,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 151 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 19:15:06,963 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 19:15:06,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 19:15:06,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-24 19:15:07,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-12-24 19:15:07,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 74 states have (on average 1.3513513513513513) internal successors, (100), 74 states have internal predecessors, (100), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-24 19:15:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 142 transitions. [2023-12-24 19:15:07,021 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 142 transitions. Word has length 152 [2023-12-24 19:15:07,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:15:07,021 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 142 transitions. [2023-12-24 19:15:07,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-24 19:15:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 142 transitions. [2023-12-24 19:15:07,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 19:15:07,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:15:07,024 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:07,039 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 19:15:07,225 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 19:15:07,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:15:07,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:15:07,226 INFO L85 PathProgramCache]: Analyzing trace with hash 929281292, now seen corresponding path program 1 times [2023-12-24 19:15:07,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:15:07,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369513886] [2023-12-24 19:15:07,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:15:07,227 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 19:15:07,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:15:07,229 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 19:15:07,232 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 19:15:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:15:07,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 19:15:07,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:15:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-12-24 19:15:07,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 19:15:07,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:15:07,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369513886] [2023-12-24 19:15:07,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369513886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 19:15:07,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 19:15:07,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 19:15:07,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638170834] [2023-12-24 19:15:07,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 19:15:07,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 19:15:07,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:15:07,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 19:15:07,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 19:15:07,742 INFO L87 Difference]: Start difference. First operand 97 states and 142 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-24 19:15:07,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:15:07,828 INFO L93 Difference]: Finished difference Result 199 states and 292 transitions. [2023-12-24 19:15:07,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 19:15:07,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 152 [2023-12-24 19:15:07,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:15:07,830 INFO L225 Difference]: With dead ends: 199 [2023-12-24 19:15:07,830 INFO L226 Difference]: Without dead ends: 103 [2023-12-24 19:15:07,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 19:15:07,831 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 10 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 19:15:07,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 406 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 19:15:07,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-24 19:15:07,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2023-12-24 19:15:07,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 76 states have (on average 1.3421052631578947) internal successors, (102), 76 states have internal predecessors, (102), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-24 19:15:07,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 144 transitions. [2023-12-24 19:15:07,840 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 144 transitions. Word has length 152 [2023-12-24 19:15:07,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:15:07,840 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 144 transitions. [2023-12-24 19:15:07,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-24 19:15:07,840 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 144 transitions. [2023-12-24 19:15:07,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 19:15:07,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:15:07,845 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:07,859 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 (3)] Ended with exit code 0 [2023-12-24 19:15:08,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 19:15:08,072 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:15:08,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:15:08,073 INFO L85 PathProgramCache]: Analyzing trace with hash -947781938, now seen corresponding path program 1 times [2023-12-24 19:15:08,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:15:08,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811796090] [2023-12-24 19:15:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:15:08,074 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 19:15:08,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:15:08,075 INFO L229 MonitoredProcess]: Starting monitored process 4 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 19:15:08,080 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 (4)] Waiting until timeout for monitored process [2023-12-24 19:15:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:15:08,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-24 19:15:08,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:15:08,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 19:15:09,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 19:15:10,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 19:15:11,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2023-12-24 19:15:12,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2023-12-24 19:15:12,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2023-12-24 19:15:13,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2023-12-24 19:15:14,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 53 [2023-12-24 19:15:15,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 56 [2023-12-24 19:15:15,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 56 [2023-12-24 19:15:16,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 71 [2023-12-24 19:15:17,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 71 [2023-12-24 19:15:17,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 19:15:17,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 70 treesize of output 38 [2023-12-24 19:15:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 588 proven. 152 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-24 19:15:17,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:15:29,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:15:29,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811796090] [2023-12-24 19:15:29,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811796090] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:15:29,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1995505829] [2023-12-24 19:15:29,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:15:29,896 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 19:15:29,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 19:15:29,937 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 19:15:29,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-24 19:15:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:15:31,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-24 19:15:31,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:15:34,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 19:15:35,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 19:15:37,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 51 [2023-12-24 19:15:37,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 59 [2023-12-24 19:15:38,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 70 [2023-12-24 19:15:39,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 73 [2023-12-24 19:15:40,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 100 [2023-12-24 19:15:41,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 95 [2023-12-24 19:15:41,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 97 [2023-12-24 19:15:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 120 proven. 504 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-12-24 19:15:41,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:15:44,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1995505829] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:15:44,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 19:15:44,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 28 [2023-12-24 19:15:44,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129327827] [2023-12-24 19:15:44,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 19:15:44,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 19:15:44,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:15:44,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 19:15:44,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1263, Unknown=3, NotChecked=0, Total=1406 [2023-12-24 19:15:44,944 INFO L87 Difference]: Start difference. First operand 99 states and 144 transitions. Second operand has 29 states, 29 states have (on average 4.413793103448276) internal successors, (128), 28 states have internal predecessors, (128), 13 states have call successors, (42), 13 states have call predecessors, (42), 13 states have return successors, (42), 13 states have call predecessors, (42), 13 states have call successors, (42) [2023-12-24 19:15:59,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:00,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:02,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:04,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:07,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:09,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:10,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:12,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:14,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:16,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:18,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:20,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:21,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:23,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:24,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:26,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:28,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:30,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:31,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:33,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:35,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:36,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:42,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:44,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:47,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:48,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:50,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:52,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:16:55,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:05,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:08,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:10,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:11,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:13,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:14,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:16,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:17,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:19,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:20,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:21,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:22,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:23,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:25,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:26,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:27,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:29,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:30,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:31,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:33,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:35,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:41,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:42,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:44,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:45,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:46,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:48,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:49,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:50,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:51,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:52,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:54,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:55,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:56,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:57,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:17:58,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:18:00,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:18:01,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:18:02,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:18:03,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:18:05,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:18:08,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:18:12,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:18:14,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:18:14,479 INFO L93 Difference]: Finished difference Result 630 states and 920 transitions. [2023-12-24 19:18:14,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-24 19:18:14,480 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.413793103448276) internal successors, (128), 28 states have internal predecessors, (128), 13 states have call successors, (42), 13 states have call predecessors, (42), 13 states have return successors, (42), 13 states have call predecessors, (42), 13 states have call successors, (42) Word has length 152 [2023-12-24 19:18:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:18:14,484 INFO L225 Difference]: With dead ends: 630 [2023-12-24 19:18:14,484 INFO L226 Difference]: Without dead ends: 532 [2023-12-24 19:18:14,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=1253, Invalid=5224, Unknown=3, NotChecked=0, Total=6480 [2023-12-24 19:18:14,487 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 2259 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 2854 mSolverCounterSat, 563 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 133.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2259 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 3418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 2854 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.6s IncrementalHoareTripleChecker+Time [2023-12-24 19:18:14,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2259 Valid, 1380 Invalid, 3418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [563 Valid, 2854 Invalid, 1 Unknown, 0 Unchecked, 135.6s Time] [2023-12-24 19:18:14,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2023-12-24 19:18:14,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 296. [2023-12-24 19:18:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 228 states have (on average 1.3201754385964912) internal successors, (301), 230 states have internal predecessors, (301), 62 states have call successors, (62), 5 states have call predecessors, (62), 5 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 19:18:14,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 425 transitions. [2023-12-24 19:18:14,536 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 425 transitions. Word has length 152 [2023-12-24 19:18:14,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:18:14,537 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 425 transitions. [2023-12-24 19:18:14,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.413793103448276) internal successors, (128), 28 states have internal predecessors, (128), 13 states have call successors, (42), 13 states have call predecessors, (42), 13 states have return successors, (42), 13 states have call predecessors, (42), 13 states have call successors, (42) [2023-12-24 19:18:14,537 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 425 transitions. [2023-12-24 19:18:14,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 19:18:14,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:18:14,540 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:18:14,552 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 (4)] Ended with exit code 0 [2023-12-24 19:18:14,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-24 19:18:14,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 19:18:14,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:18:14,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:18:14,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1056063986, now seen corresponding path program 1 times [2023-12-24 19:18:14,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:18:14,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813204696] [2023-12-24 19:18:14,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:18:14,953 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 19:18:14,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:18:14,954 INFO L229 MonitoredProcess]: Starting monitored process 6 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 19:18:14,955 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 (6)] Waiting until timeout for monitored process [2023-12-24 19:18:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:18:15,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 19:18:15,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:18:15,382 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 19:18:15,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 19:18:15,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:18:15,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813204696] [2023-12-24 19:18:15,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813204696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 19:18:15,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 19:18:15,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 19:18:15,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466056186] [2023-12-24 19:18:15,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 19:18:15,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 19:18:15,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:18:15,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 19:18:15,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 19:18:15,389 INFO L87 Difference]: Start difference. First operand 296 states and 425 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 19:18:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:18:15,474 INFO L93 Difference]: Finished difference Result 589 states and 846 transitions. [2023-12-24 19:18:15,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-24 19:18:15,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 152 [2023-12-24 19:18:15,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:18:15,478 INFO L225 Difference]: With dead ends: 589 [2023-12-24 19:18:15,478 INFO L226 Difference]: Without dead ends: 294 [2023-12-24 19:18:15,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 19:18:15,481 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 30 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 19:18:15,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 373 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 19:18:15,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-24 19:18:15,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2023-12-24 19:18:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 226 states have (on average 1.3053097345132743) internal successors, (295), 228 states have internal predecessors, (295), 62 states have call successors, (62), 5 states have call predecessors, (62), 5 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 19:18:15,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 419 transitions. [2023-12-24 19:18:15,523 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 419 transitions. Word has length 152 [2023-12-24 19:18:15,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:18:15,523 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 419 transitions. [2023-12-24 19:18:15,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 19:18:15,524 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 419 transitions. [2023-12-24 19:18:15,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 19:18:15,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:18:15,527 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:18:15,538 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 (6)] Forceful destruction successful, exit code 0 [2023-12-24 19:18:15,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /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 19:18:15,739 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:18:15,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:18:15,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1304555438, now seen corresponding path program 1 times [2023-12-24 19:18:15,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:18:15,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040541042] [2023-12-24 19:18:15,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:18:15,740 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 19:18:15,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:18:15,742 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 19:18:15,742 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 19:18:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:18:16,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 19:18:16,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:18:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-12-24 19:18:16,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 19:18:16,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:18:16,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040541042] [2023-12-24 19:18:16,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040541042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 19:18:16,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 19:18:16,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 19:18:16,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419108742] [2023-12-24 19:18:16,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 19:18:16,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 19:18:16,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:18:16,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 19:18:16,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 19:18:16,164 INFO L87 Difference]: Start difference. First operand 294 states and 419 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-24 19:18:16,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:18:16,261 INFO L93 Difference]: Finished difference Result 597 states and 852 transitions. [2023-12-24 19:18:16,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 19:18:16,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 152 [2023-12-24 19:18:16,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:18:16,268 INFO L225 Difference]: With dead ends: 597 [2023-12-24 19:18:16,268 INFO L226 Difference]: Without dead ends: 304 [2023-12-24 19:18:16,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 19:18:16,269 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 7 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 19:18:16,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 408 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 19:18:16,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-24 19:18:16,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 296. [2023-12-24 19:18:16,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 228 states have (on average 1.2982456140350878) internal successors, (296), 230 states have internal predecessors, (296), 62 states have call successors, (62), 5 states have call predecessors, (62), 5 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 19:18:16,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 420 transitions. [2023-12-24 19:18:16,302 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 420 transitions. Word has length 152 [2023-12-24 19:18:16,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:18:16,302 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 420 transitions. [2023-12-24 19:18:16,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-24 19:18:16,302 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 420 transitions. [2023-12-24 19:18:16,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 19:18:16,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:18:16,304 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:18:16,317 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 19:18:16,515 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 [2023-12-24 19:18:16,518 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:18:16,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:18:16,519 INFO L85 PathProgramCache]: Analyzing trace with hash -2060742712, now seen corresponding path program 1 times [2023-12-24 19:18:16,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:18:16,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522701484] [2023-12-24 19:18:16,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:18:16,519 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 19:18:16,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:18:16,521 INFO L229 MonitoredProcess]: Starting monitored process 8 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 19:18:16,522 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 (8)] Waiting until timeout for monitored process [2023-12-24 19:18:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:18:16,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 19:18:16,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:18:17,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 43 [2023-12-24 19:18:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 440 proven. 40 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2023-12-24 19:18:17,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:18:17,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 25 [2023-12-24 19:18:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-12-24 19:18:17,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:18:17,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522701484] [2023-12-24 19:18:17,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522701484] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 19:18:17,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 19:18:17,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-12-24 19:18:17,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129181299] [2023-12-24 19:18:17,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 19:18:17,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 19:18:17,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:18:17,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 19:18:17,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 19:18:17,483 INFO L87 Difference]: Start difference. First operand 296 states and 420 transitions. Second operand has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (41), 3 states have call predecessors, (41), 4 states have return successors, (41), 3 states have call predecessors, (41), 4 states have call successors, (41) [2023-12-24 19:18:20,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 19:18:21,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 19:18:24,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 19:18:25,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 19:18:26,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:18:26,281 INFO L93 Difference]: Finished difference Result 606 states and 856 transitions. [2023-12-24 19:18:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 19:18:26,282 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (41), 3 states have call predecessors, (41), 4 states have return successors, (41), 3 states have call predecessors, (41), 4 states have call successors, (41) Word has length 154 [2023-12-24 19:18:26,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:18:26,283 INFO L225 Difference]: With dead ends: 606 [2023-12-24 19:18:26,283 INFO L226 Difference]: Without dead ends: 300 [2023-12-24 19:18:26,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-12-24 19:18:26,285 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 117 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-24 19:18:26,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 500 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-24 19:18:26,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-24 19:18:26,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 294. [2023-12-24 19:18:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 226 states have (on average 1.2920353982300885) internal successors, (292), 228 states have internal predecessors, (292), 62 states have call successors, (62), 5 states have call predecessors, (62), 5 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 19:18:26,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 416 transitions. [2023-12-24 19:18:26,317 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 416 transitions. Word has length 154 [2023-12-24 19:18:26,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:18:26,317 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 416 transitions. [2023-12-24 19:18:26,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (41), 3 states have call predecessors, (41), 4 states have return successors, (41), 3 states have call predecessors, (41), 4 states have call successors, (41) [2023-12-24 19:18:26,317 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 416 transitions. [2023-12-24 19:18:26,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 19:18:26,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:18:26,319 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:18:26,330 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 (8)] Forceful destruction successful, exit code 0 [2023-12-24 19:18:26,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /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 19:18:26,530 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:18:26,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:18:26,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1133330158, now seen corresponding path program 1 times [2023-12-24 19:18:26,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:18:26,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093367291] [2023-12-24 19:18:26,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:18:26,531 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 19:18:26,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:18:26,532 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 19:18:26,533 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 19:18:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:18:27,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 19:18:27,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:18:27,087 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 19:18:27,088 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 19:18:27,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:18:27,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093367291] [2023-12-24 19:18:27,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093367291] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 19:18:27,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 19:18:27,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 19:18:27,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455320557] [2023-12-24 19:18:27,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 19:18:27,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 19:18:27,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:18:27,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 19:18:27,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 19:18:27,089 INFO L87 Difference]: Start difference. First operand 294 states and 416 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 19:18:27,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:18:27,197 INFO L93 Difference]: Finished difference Result 614 states and 870 transitions. [2023-12-24 19:18:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 19:18:27,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 154 [2023-12-24 19:18:27,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:18:27,199 INFO L225 Difference]: With dead ends: 614 [2023-12-24 19:18:27,199 INFO L226 Difference]: Without dead ends: 321 [2023-12-24 19:18:27,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 19:18:27,201 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 49 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 19:18:27,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 501 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 19:18:27,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-12-24 19:18:27,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 303. [2023-12-24 19:18:27,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 235 states have (on average 1.2808510638297872) internal successors, (301), 237 states have internal predecessors, (301), 62 states have call successors, (62), 5 states have call predecessors, (62), 5 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-24 19:18:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 425 transitions. [2023-12-24 19:18:27,236 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 425 transitions. Word has length 154 [2023-12-24 19:18:27,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:18:27,237 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 425 transitions. [2023-12-24 19:18:27,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 19:18:27,238 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 425 transitions. [2023-12-24 19:18:27,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 19:18:27,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:18:27,239 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:18:27,260 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 19:18:27,452 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 [2023-12-24 19:18:27,452 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:18:27,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:18:27,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1129443807, now seen corresponding path program 1 times [2023-12-24 19:18:27,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:18:27,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838769852] [2023-12-24 19:18:27,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:18:27,454 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 19:18:27,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:18:27,455 INFO L229 MonitoredProcess]: Starting monitored process 10 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 19:18:27,492 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 (10)] Waiting until timeout for monitored process [2023-12-24 19:18:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:18:28,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 19:18:28,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:18:29,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 19:18:30,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-12-24 19:18:30,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-12-24 19:18:31,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2023-12-24 19:18:31,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2023-12-24 19:18:32,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 48 [2023-12-24 19:18:33,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 59 [2023-12-24 19:18:34,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2023-12-24 19:18:34,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 19:18:34,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 62 [2023-12-24 19:18:34,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 19:18:34,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 31 [2023-12-24 19:18:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 486 proven. 206 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 19:18:34,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:18:34,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:18:34,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838769852] [2023-12-24 19:18:34,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838769852] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:18:34,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1753350758] [2023-12-24 19:18:34,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:18:34,765 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 19:18:34,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 19:18:34,766 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 19:18:34,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-24 19:18:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:18:36,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 19:18:36,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:18:36,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 19:18:37,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 19:18:38,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 19:18:38,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 19:18:39,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 19:18:39,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 19:18:40,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 19:18:40,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2023-12-24 19:18:41,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2023-12-24 19:18:42,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2023-12-24 19:18:43,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2023-12-24 19:18:43,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2023-12-24 19:18:43,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 21 [2023-12-24 19:18:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 240 proven. 152 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2023-12-24 19:18:43,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:18:44,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1753350758] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:18:44,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 19:18:44,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 24 [2023-12-24 19:18:44,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347304355] [2023-12-24 19:18:44,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 19:18:44,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-24 19:18:44,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:18:44,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-24 19:18:44,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 19:18:44,147 INFO L87 Difference]: Start difference. First operand 303 states and 425 transitions. Second operand has 25 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 11 states have call successors, (42), 10 states have call predecessors, (42), 11 states have return successors, (42), 10 states have call predecessors, (42), 11 states have call successors, (42) [2023-12-24 19:18:53,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:19:01,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:19:03,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:19:03,933 INFO L93 Difference]: Finished difference Result 1079 states and 1434 transitions. [2023-12-24 19:19:03,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-24 19:19:03,934 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 11 states have call successors, (42), 10 states have call predecessors, (42), 11 states have return successors, (42), 10 states have call predecessors, (42), 11 states have call successors, (42) Word has length 154 [2023-12-24 19:19:03,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:19:03,937 INFO L225 Difference]: With dead ends: 1079 [2023-12-24 19:19:03,937 INFO L226 Difference]: Without dead ends: 777 [2023-12-24 19:19:03,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1272 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1003, Invalid=4253, Unknown=0, NotChecked=0, Total=5256 [2023-12-24 19:19:03,938 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 820 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-12-24 19:19:03,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 756 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2023-12-24 19:19:03,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-12-24 19:19:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 628. [2023-12-24 19:19:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 489 states have (on average 1.2453987730061349) internal successors, (609), 494 states have internal predecessors, (609), 109 states have call successors, (109), 29 states have call predecessors, (109), 29 states have return successors, (109), 104 states have call predecessors, (109), 109 states have call successors, (109) [2023-12-24 19:19:04,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 827 transitions. [2023-12-24 19:19:04,024 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 827 transitions. Word has length 154 [2023-12-24 19:19:04,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:19:04,024 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 827 transitions. [2023-12-24 19:19:04,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 11 states have call successors, (42), 10 states have call predecessors, (42), 11 states have return successors, (42), 10 states have call predecessors, (42), 11 states have call successors, (42) [2023-12-24 19:19:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 827 transitions. [2023-12-24 19:19:04,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 19:19:04,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:19:04,026 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:19:04,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-24 19:19:04,251 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 (10)] Forceful destruction successful, exit code 0 [2023-12-24 19:19:04,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /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 19:19:04,449 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:19:04,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:19:04,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2019261994, now seen corresponding path program 1 times [2023-12-24 19:19:04,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:19:04,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166937564] [2023-12-24 19:19:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:19:04,450 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 19:19:04,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:19:04,451 INFO L229 MonitoredProcess]: Starting monitored process 12 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 19:19:04,452 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 (12)] Waiting until timeout for monitored process [2023-12-24 19:19:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:19:05,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-24 19:19:05,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:19:07,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 19:19:07,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 19:19:08,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 40 [2023-12-24 19:19:09,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 43 [2023-12-24 19:19:10,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 51 [2023-12-24 19:19:10,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 54 [2023-12-24 19:19:11,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 81 [2023-12-24 19:19:12,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 76 [2023-12-24 19:19:12,374 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 19:19:12,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 189 treesize of output 85 [2023-12-24 19:19:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 104 proven. 512 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-24 19:19:12,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:19:13,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:19:13,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166937564] [2023-12-24 19:19:13,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166937564] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:19:13,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [80956009] [2023-12-24 19:19:13,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:19:13,886 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 19:19:13,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 19:19:13,887 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 19:19:13,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-24 19:19:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:19:16,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 19:19:16,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:19:18,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 19:19:19,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 19:19:20,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 19:19:20,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 19:19:21,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 19:19:22,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 19:19:22,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 59 [2023-12-24 19:19:23,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 54 [2023-12-24 19:19:23,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 77 [2023-12-24 19:19:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-12-24 19:19:23,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:19:24,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [80956009] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:19:24,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 19:19:24,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2023-12-24 19:19:24,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349169210] [2023-12-24 19:19:24,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 19:19:24,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 19:19:24,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:19:24,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 19:19:24,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2023-12-24 19:19:24,896 INFO L87 Difference]: Start difference. First operand 628 states and 827 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 8 states have call successors, (42), 8 states have call predecessors, (42), 8 states have return successors, (42), 8 states have call predecessors, (42), 8 states have call successors, (42) [2023-12-24 19:19:32,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:19:35,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:19:36,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:19:43,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:19:43,689 INFO L93 Difference]: Finished difference Result 1373 states and 1802 transitions. [2023-12-24 19:19:43,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 19:19:43,691 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 8 states have call successors, (42), 8 states have call predecessors, (42), 8 states have return successors, (42), 8 states have call predecessors, (42), 8 states have call successors, (42) Word has length 154 [2023-12-24 19:19:43,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:19:43,695 INFO L225 Difference]: With dead ends: 1373 [2023-12-24 19:19:43,696 INFO L226 Difference]: Without dead ends: 746 [2023-12-24 19:19:43,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 321 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 19:19:43,697 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 617 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-12-24 19:19:43,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 765 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2023-12-24 19:19:43,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-12-24 19:19:43,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 535. [2023-12-24 19:19:43,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 416 states have (on average 1.2427884615384615) internal successors, (517), 421 states have internal predecessors, (517), 93 states have call successors, (93), 25 states have call predecessors, (93), 25 states have return successors, (93), 88 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-24 19:19:43,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 703 transitions. [2023-12-24 19:19:43,786 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 703 transitions. Word has length 154 [2023-12-24 19:19:43,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:19:43,786 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 703 transitions. [2023-12-24 19:19:43,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 8 states have call successors, (42), 8 states have call predecessors, (42), 8 states have return successors, (42), 8 states have call predecessors, (42), 8 states have call successors, (42) [2023-12-24 19:19:43,787 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 703 transitions. [2023-12-24 19:19:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 19:19:43,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:19:43,788 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:19:43,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-12-24 19:19:44,011 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 (12)] Forceful destruction successful, exit code 0 [2023-12-24 19:19:44,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /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 19:19:44,211 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:19:44,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:19:44,212 INFO L85 PathProgramCache]: Analyzing trace with hash -2032242422, now seen corresponding path program 1 times [2023-12-24 19:19:44,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:19:44,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835444607] [2023-12-24 19:19:44,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:19:44,212 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 19:19:44,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:19:44,214 INFO L229 MonitoredProcess]: Starting monitored process 14 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 19:19:44,215 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 (14)] Waiting until timeout for monitored process [2023-12-24 19:19:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:19:44,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-24 19:19:44,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:19:46,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 19:19:47,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2023-12-24 19:19:48,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 38 [2023-12-24 19:19:49,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 41 [2023-12-24 19:19:49,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 41 [2023-12-24 19:19:50,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 49 [2023-12-24 19:19:51,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 79 [2023-12-24 19:19:51,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 74 [2023-12-24 19:19:51,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 19:19:51,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 187 treesize of output 83 [2023-12-24 19:19:51,977 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 56 proven. 536 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-24 19:19:51,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:19:54,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:19:54,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835444607] [2023-12-24 19:19:54,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835444607] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:19:54,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1936956254] [2023-12-24 19:19:54,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:19:54,465 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 19:19:54,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 19:19:54,466 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 19:19:54,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-24 19:19:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:19:56,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-24 19:19:56,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:19:58,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 19:20:00,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2023-12-24 19:20:02,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 49 [2023-12-24 19:20:02,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 57 [2023-12-24 19:20:03,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 60 [2023-12-24 19:20:04,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 60 [2023-12-24 19:20:05,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 87 [2023-12-24 19:20:05,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 82 [2023-12-24 19:20:06,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 91 [2023-12-24 19:20:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 104 proven. 504 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-24 19:20:06,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:20:07,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1936956254] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:20:07,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 19:20:07,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 30 [2023-12-24 19:20:07,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872235666] [2023-12-24 19:20:07,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 19:20:07,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-24 19:20:07,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:20:07,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-24 19:20:07,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 19:20:07,506 INFO L87 Difference]: Start difference. First operand 535 states and 703 transitions. Second operand has 31 states, 29 states have (on average 4.172413793103448) internal successors, (121), 28 states have internal predecessors, (121), 10 states have call successors, (42), 10 states have call predecessors, (42), 10 states have return successors, (42), 9 states have call predecessors, (42), 10 states have call successors, (42) [2023-12-24 19:20:18,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:20:22,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:20:24,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 19:20:27,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 19:20:28,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:20:33,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:20:35,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:20:37,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:20:43,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 19:20:46,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:20:46,592 INFO L93 Difference]: Finished difference Result 1410 states and 1815 transitions. [2023-12-24 19:20:46,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-24 19:20:46,593 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 4.172413793103448) internal successors, (121), 28 states have internal predecessors, (121), 10 states have call successors, (42), 10 states have call predecessors, (42), 10 states have return successors, (42), 9 states have call predecessors, (42), 10 states have call successors, (42) Word has length 154 [2023-12-24 19:20:46,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:20:46,596 INFO L225 Difference]: With dead ends: 1410 [2023-12-24 19:20:46,596 INFO L226 Difference]: Without dead ends: 876 [2023-12-24 19:20:46,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 311 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=989, Invalid=4561, Unknown=0, NotChecked=0, Total=5550 [2023-12-24 19:20:46,598 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 1007 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 2772 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 3147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.3s IncrementalHoareTripleChecker+Time [2023-12-24 19:20:46,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 908 Invalid, 3147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2772 Invalid, 0 Unknown, 0 Unchecked, 32.3s Time] [2023-12-24 19:20:46,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2023-12-24 19:20:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 441. [2023-12-24 19:20:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 327 states have (on average 1.1926605504587156) internal successors, (390), 333 states have internal predecessors, (390), 85 states have call successors, (85), 28 states have call predecessors, (85), 28 states have return successors, (85), 79 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-24 19:20:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 560 transitions. [2023-12-24 19:20:46,687 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 560 transitions. Word has length 154 [2023-12-24 19:20:46,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:20:46,690 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 560 transitions. [2023-12-24 19:20:46,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 4.172413793103448) internal successors, (121), 28 states have internal predecessors, (121), 10 states have call successors, (42), 10 states have call predecessors, (42), 10 states have return successors, (42), 9 states have call predecessors, (42), 10 states have call successors, (42) [2023-12-24 19:20:46,690 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 560 transitions. [2023-12-24 19:20:46,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 19:20:46,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:20:46,691 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:46,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-24 19:20:46,918 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 (14)] Forceful destruction successful, exit code 0 [2023-12-24 19:20:47,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /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 19:20:47,116 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:20:47,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:20:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash -231791686, now seen corresponding path program 1 times [2023-12-24 19:20:47,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:20:47,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455223655] [2023-12-24 19:20:47,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:20:47,117 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 19:20:47,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:20:47,118 INFO L229 MonitoredProcess]: Starting monitored process 16 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 19:20:47,118 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 (16)] Waiting until timeout for monitored process [2023-12-24 19:20:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:20:47,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 19:20:47,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:20:50,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 19:20:51,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 19:20:52,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 19:20:53,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 40 [2023-12-24 19:20:54,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 43 [2023-12-24 19:20:54,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 51 [2023-12-24 19:20:55,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 81 [2023-12-24 19:20:56,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 76 [2023-12-24 19:20:56,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 76 [2023-12-24 19:20:56,731 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 19:20:56,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 189 treesize of output 85 [2023-12-24 19:20:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 80 proven. 512 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-24 19:20:56,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:21:03,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:21:03,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455223655] [2023-12-24 19:21:03,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455223655] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:21:03,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [192179576] [2023-12-24 19:21:03,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:21:03,520 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 19:21:03,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 19:21:03,521 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 19:21:03,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-24 19:21:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:21:05,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-24 19:21:05,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:21:08,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 19:21:10,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 19:21:12,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 59 [2023-12-24 19:21:13,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 62 [2023-12-24 19:21:14,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 62 [2023-12-24 19:21:15,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 70 [2023-12-24 19:21:17,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 100 [2023-12-24 19:21:17,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 95 [2023-12-24 19:21:54,999 WARN L293 SmtUtils]: Spent 17.31s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 19:22:00,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 107 [2023-12-24 19:22:29,125 WARN L293 SmtUtils]: Spent 12.89s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 19:22:36,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 237 treesize of output 109 [2023-12-24 19:22:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 440 proven. 152 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-24 19:22:45,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:23:46,405 WARN L876 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_489 (_ BitVec 32))) (let ((.cse1 (store |c_#memory_int#1| c_~WrapperStruct00_var_1_9_Pointer~0.base (store (select |c_#memory_int#1| c_~WrapperStruct00_var_1_9_Pointer~0.base) c_~WrapperStruct00_var_1_9_Pointer~0.offset v_ArrVal_489)))) (fp.eq (let ((.cse0 (select (select .cse1 c_~WrapperStruct00_var_1_7_Pointer~0.base) c_~WrapperStruct00_var_1_7_Pointer~0.offset))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) (let ((.cse2 (select (select .cse1 c_~WrapperStruct00_var_1_8_Pointer~0.base) c_~WrapperStruct00_var_1_8_Pointer~0.offset))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2)))))) (forall ((|ULTIMATE.start_step_#t~mem22#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_step_#t~mem23#1| (_ FloatingPoint 8 24))) (not (fp.lt |ULTIMATE.start_step_#t~mem23#1| (fp.div c_currentRoundingMode (let ((.cse3 (select (select |c_#memory_int#1| c_~WrapperStruct00_var_1_7_Pointer~0.base) c_~WrapperStruct00_var_1_7_Pointer~0.offset))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))) |ULTIMATE.start_step_#t~mem22#1|))))) is different from true [2023-12-24 19:25:16,779 WARN L293 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 19:26:20,191 WARN L293 SmtUtils]: Spent 6.72s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 19:26:44,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [192179576] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:26:44,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 19:26:44,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 28 [2023-12-24 19:26:44,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846394851] [2023-12-24 19:26:44,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 19:26:44,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 19:26:44,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:26:44,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 19:26:44,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1073, Unknown=7, NotChecked=68, Total=1332 [2023-12-24 19:26:44,303 INFO L87 Difference]: Start difference. First operand 441 states and 560 transitions. Second operand has 29 states, 29 states have (on average 4.137931034482759) internal successors, (120), 28 states have internal predecessors, (120), 9 states have call successors, (42), 9 states have call predecessors, (42), 9 states have return successors, (42), 9 states have call predecessors, (42), 9 states have call successors, (42) [2023-12-24 19:27:35,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:27:42,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:27:45,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:27:49,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:27:51,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:27:53,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:27:55,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:27:58,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:06,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 19:28:08,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 19:28:13,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:18,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:20,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:22,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:24,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:29,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:31,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:32,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:34,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:35,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:38,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:40,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:42,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:44,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:46,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:51,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:55,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:28:57,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:29:01,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:29:03,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:29:05,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:29:07,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:29:08,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:29:12,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 19:29:12,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:29:12,435 INFO L93 Difference]: Finished difference Result 1191 states and 1524 transitions. [2023-12-24 19:29:12,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 19:29:12,436 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.137931034482759) internal successors, (120), 28 states have internal predecessors, (120), 9 states have call successors, (42), 9 states have call predecessors, (42), 9 states have return successors, (42), 9 states have call predecessors, (42), 9 states have call successors, (42) Word has length 155 [2023-12-24 19:29:12,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:29:12,439 INFO L225 Difference]: With dead ends: 1191 [2023-12-24 19:29:12,439 INFO L226 Difference]: Without dead ends: 984 [2023-12-24 19:29:12,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 319 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 310.4s TimeCoverageRelationStatistics Valid=484, Invalid=2165, Unknown=7, NotChecked=100, Total=2756 [2023-12-24 19:29:12,440 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 951 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 397 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.6s IncrementalHoareTripleChecker+Time [2023-12-24 19:29:12,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 1021 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 2202 Invalid, 6 Unknown, 0 Unchecked, 105.6s Time] [2023-12-24 19:29:12,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2023-12-24 19:29:12,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 526. [2023-12-24 19:29:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 395 states have (on average 1.2) internal successors, (474), 400 states have internal predecessors, (474), 95 states have call successors, (95), 35 states have call predecessors, (95), 35 states have return successors, (95), 90 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-24 19:29:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 664 transitions. [2023-12-24 19:29:12,554 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 664 transitions. Word has length 155 [2023-12-24 19:29:12,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:29:12,554 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 664 transitions. [2023-12-24 19:29:12,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.137931034482759) internal successors, (120), 28 states have internal predecessors, (120), 9 states have call successors, (42), 9 states have call predecessors, (42), 9 states have return successors, (42), 9 states have call predecessors, (42), 9 states have call successors, (42) [2023-12-24 19:29:12,554 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 664 transitions. [2023-12-24 19:29:12,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 19:29:12,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:29:12,562 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:12,575 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 (16)] Forceful destruction successful, exit code 0 [2023-12-24 19:29:12,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-12-24 19:29:12,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 19:29:12,971 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:29:12,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:29:12,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1096718694, now seen corresponding path program 1 times [2023-12-24 19:29:12,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:29:12,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115874255] [2023-12-24 19:29:12,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:29:12,972 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 19:29:12,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:29:12,973 INFO L229 MonitoredProcess]: Starting monitored process 18 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 19:29:12,974 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 (18)] Waiting until timeout for monitored process [2023-12-24 19:29:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:29:13,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 19:29:13,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:29:13,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 19:29:13,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2023-12-24 19:29:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-24 19:29:13,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 19:29:13,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:29:13,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115874255] [2023-12-24 19:29:13,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115874255] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 19:29:13,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 19:29:13,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 19:29:13,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065796371] [2023-12-24 19:29:13,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 19:29:13,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 19:29:13,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:29:13,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 19:29:13,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 19:29:13,909 INFO L87 Difference]: Start difference. First operand 526 states and 664 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 19:29:17,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 19:29:18,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:29:18,974 INFO L93 Difference]: Finished difference Result 624 states and 794 transitions. [2023-12-24 19:29:18,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 19:29:18,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 156 [2023-12-24 19:29:18,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:29:18,976 INFO L225 Difference]: With dead ends: 624 [2023-12-24 19:29:18,976 INFO L226 Difference]: Without dead ends: 622 [2023-12-24 19:29:18,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-24 19:29:18,977 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 51 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-24 19:29:18,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 504 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-24 19:29:18,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-12-24 19:29:19,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 596. [2023-12-24 19:29:19,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 465 states have (on average 1.221505376344086) internal successors, (568), 470 states have internal predecessors, (568), 95 states have call successors, (95), 35 states have call predecessors, (95), 35 states have return successors, (95), 90 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-24 19:29:19,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 758 transitions. [2023-12-24 19:29:19,096 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 758 transitions. Word has length 156 [2023-12-24 19:29:19,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:29:19,096 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 758 transitions. [2023-12-24 19:29:19,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-24 19:29:19,097 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 758 transitions. [2023-12-24 19:29:19,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 19:29:19,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:29:19,099 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:19,128 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 (18)] Forceful destruction successful, exit code 0 [2023-12-24 19:29:19,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 19:29:19,312 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:29:19,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:29:19,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1337408483, now seen corresponding path program 1 times [2023-12-24 19:29:19,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:29:19,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301211177] [2023-12-24 19:29:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:29:19,313 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 19:29:19,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:29:19,314 INFO L229 MonitoredProcess]: Starting monitored process 19 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 19:29:19,315 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 (19)] Waiting until timeout for monitored process [2023-12-24 19:29:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:29:20,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 19:29:20,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:29:26,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 19:29:28,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 40 [2023-12-24 19:29:30,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 43 [2023-12-24 19:29:32,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 43 [2023-12-24 19:29:34,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 51 [2023-12-24 19:29:36,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 19:29:36,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 69 [2023-12-24 19:29:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 400 proven. 152 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 19:29:36,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:29:39,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:29:39,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301211177] [2023-12-24 19:29:39,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301211177] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:29:39,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [402911040] [2023-12-24 19:29:39,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:29:39,214 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 19:29:39,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 19:29:39,215 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 19:29:39,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process Received shutdown request... [2023-12-24 19:29:39,658 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 (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 19:29:39,669 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 19:29:39,690 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 19:29:40,707 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 (19)] Ended with exit code 0 [2023-12-24 19:29:40,870 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-24 19:29:40,906 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forcibly destroying the process [2023-12-24 19:29:40,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-24 19:29:40,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 19:29:40,926 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forcibly destroying the process [2023-12-24 19:29:40,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 19:29:40,927 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 158 with TraceHistMax 21,while AutomatonFreeRefinementEngine was Timeout during proof generation before using IpTcStrategyModuleZ3 [1321967490]. [2023-12-24 19:29:40,931 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 19:29:40,936 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 19:29:40,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 07:29:40 BoogieIcfgContainer [2023-12-24 19:29:40,938 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 19:29:40,938 INFO L158 Benchmark]: Toolchain (without parser) took 878457.76ms. Allocated memory was 260.0MB in the beginning and 375.4MB in the end (delta: 115.3MB). Free memory was 208.6MB in the beginning and 126.4MB in the end (delta: 82.2MB). Peak memory consumption was 198.6MB. Max. memory is 8.0GB. [2023-12-24 19:29:40,938 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 182.5MB. Free memory is still 134.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 19:29:40,938 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.14ms. Allocated memory is still 260.0MB. Free memory was 208.2MB in the beginning and 191.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-24 19:29:40,938 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.31ms. Allocated memory is still 260.0MB. Free memory was 191.4MB in the beginning and 188.0MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 19:29:40,938 INFO L158 Benchmark]: Boogie Preprocessor took 77.80ms. Allocated memory is still 260.0MB. Free memory was 188.0MB in the beginning and 183.0MB in the end (delta: 5.0MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 19:29:40,938 INFO L158 Benchmark]: RCFGBuilder took 3338.15ms. Allocated memory is still 260.0MB. Free memory was 183.0MB in the beginning and 218.4MB in the end (delta: -35.4MB). Peak memory consumption was 38.3MB. Max. memory is 8.0GB. [2023-12-24 19:29:40,939 INFO L158 Benchmark]: TraceAbstraction took 874695.30ms. Allocated memory was 260.0MB in the beginning and 375.4MB in the end (delta: 115.3MB). Free memory was 217.9MB in the beginning and 126.4MB in the end (delta: 91.5MB). Peak memory consumption was 207.6MB. Max. memory is 8.0GB. [2023-12-24 19:29:40,939 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 182.5MB. Free memory is still 134.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 284.14ms. Allocated memory is still 260.0MB. Free memory was 208.2MB in the beginning and 191.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.31ms. Allocated memory is still 260.0MB. Free memory was 191.4MB in the beginning and 188.0MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 77.80ms. Allocated memory is still 260.0MB. Free memory was 188.0MB in the beginning and 183.0MB in the end (delta: 5.0MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 3338.15ms. Allocated memory is still 260.0MB. Free memory was 183.0MB in the beginning and 218.4MB in the end (delta: -35.4MB). Peak memory consumption was 38.3MB. Max. memory is 8.0GB. * TraceAbstraction took 874695.30ms. Allocated memory was 260.0MB in the beginning and 375.4MB in the end (delta: 115.3MB). Free memory was 217.9MB in the beginning and 126.4MB in the end (delta: 91.5MB). Peak memory consumption was 207.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 158 with TraceHistMax 21,while AutomatonFreeRefinementEngine was Timeout during proof generation before using IpTcStrategyModuleZ3 [1321967490]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 874.6s, OverallIterations: 13, TraceHistogramMax: 21, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 389.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 5937 SdHoareTripleChecker+Valid, 318.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5918 mSDsluCounter, 7660 SdHoareTripleChecker+Invalid, 310.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6299 mSDsCounter, 1976 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11911 IncrementalHoareTripleChecker+Invalid, 13894 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1976 mSolverCounterUnsat, 1361 mSDtfsCounter, 11911 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3127 GetRequests, 2772 SyntacticMatches, 7 SemanticMatches, 348 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 5093 ImplicationChecksByTransitivity, 370.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=628occurred in iteration=8, InterpolantAutomatonStates: 230, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 1551 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 14.4s SatisfiabilityAnalysisTime, 442.4s InterpolantComputationTime, 2610 NumberOfCodeBlocks, 2610 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2746 ConstructedInterpolants, 639 QuantifiedInterpolants, 88239 SizeOfPredicates, 231 NumberOfNonLiveVariables, 5479 ConjunctsInSsa, 472 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 11308/15120 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