/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-68.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 05:36:48,762 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 05:36:48,842 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 05:36:48,847 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 05:36:48,848 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 05:36:48,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 05:36:48,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 05:36:48,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 05:36:48,879 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 05:36:48,883 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 05:36:48,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 05:36:48,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 05:36:48,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 05:36:48,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 05:36:48,885 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 05:36:48,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 05:36:48,886 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 05:36:48,886 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 05:36:48,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 05:36:48,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 05:36:48,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 05:36:48,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 05:36:48,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 05:36:48,888 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 05:36:48,888 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 05:36:48,888 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 05:36:48,888 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 05:36:48,888 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 05:36:48,889 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 05:36:48,889 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 05:36:48,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 05:36:48,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 05:36:48,890 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 05:36:48,890 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 05:36:48,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 05:36:48,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 05:36:48,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 05:36:48,891 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 05:36:48,891 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 05:36:48,891 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 05:36:48,891 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 05:36:48,892 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 05:36:48,892 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 05:36:48,893 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 05:36:48,893 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 05:36:48,893 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 05:36:48,893 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 05:36:49,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 05:36:49,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 05:36:49,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 05:36:49,144 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 05:36:49,145 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 05:36:49,146 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-68.i [2023-12-24 05:36:50,355 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 05:36:50,604 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 05:36:50,605 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-68.i [2023-12-24 05:36:50,619 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9cc6f7b5/2a6b95e7e0d84cebbc6460f74a088a3d/FLAGab75a3aed [2023-12-24 05:36:50,637 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9cc6f7b5/2a6b95e7e0d84cebbc6460f74a088a3d [2023-12-24 05:36:50,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 05:36:50,640 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 05:36:50,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 05:36:50,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 05:36:50,648 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 05:36:50,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 05:36:50" (1/1) ... [2023-12-24 05:36:50,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a1af0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:36:50, skipping insertion in model container [2023-12-24 05:36:50,650 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 05:36:50" (1/1) ... [2023-12-24 05:36:50,691 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 05:36:50,807 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-68.i[916,929] [2023-12-24 05:36:50,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 05:36:50,898 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 05:36:50,909 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-68.i[916,929] [2023-12-24 05:36:50,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 05:36:50,966 INFO L206 MainTranslator]: Completed translation [2023-12-24 05:36:50,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:36:50 WrapperNode [2023-12-24 05:36:50,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 05:36:50,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 05:36:50,968 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 05:36:50,968 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 05:36:50,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:36:50" (1/1) ... [2023-12-24 05:36:50,987 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:36:50" (1/1) ... [2023-12-24 05:36:51,013 INFO L138 Inliner]: procedures = 27, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 236 [2023-12-24 05:36:51,014 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 05:36:51,015 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 05:36:51,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 05:36:51,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 05:36:51,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:36:50" (1/1) ... [2023-12-24 05:36:51,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:36:50" (1/1) ... [2023-12-24 05:36:51,050 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:36:50" (1/1) ... [2023-12-24 05:36:51,066 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-24 05:36:51,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:36:50" (1/1) ... [2023-12-24 05:36:51,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:36:50" (1/1) ... [2023-12-24 05:36:51,087 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:36:50" (1/1) ... [2023-12-24 05:36:51,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:36:50" (1/1) ... [2023-12-24 05:36:51,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:36:50" (1/1) ... [2023-12-24 05:36:51,095 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:36:50" (1/1) ... [2023-12-24 05:36:51,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 05:36:51,100 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 05:36:51,100 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 05:36:51,101 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 05:36:51,101 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:36:50" (1/1) ... [2023-12-24 05:36:51,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 05:36:51,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 05:36:51,135 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 05:36:51,170 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 05:36:51,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 05:36:51,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 05:36:51,177 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 05:36:51,179 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 05:36:51,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 05:36:51,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 05:36:51,296 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 05:36:51,298 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 05:36:53,789 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 05:36:53,876 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 05:36:53,876 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 05:36:53,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 05:36:53 BoogieIcfgContainer [2023-12-24 05:36:53,877 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 05:36:53,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 05:36:53,882 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 05:36:53,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 05:36:53,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 05:36:50" (1/3) ... [2023-12-24 05:36:53,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ec905d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 05:36:53, skipping insertion in model container [2023-12-24 05:36:53,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:36:50" (2/3) ... [2023-12-24 05:36:53,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ec905d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 05:36:53, skipping insertion in model container [2023-12-24 05:36:53,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 05:36:53" (3/3) ... [2023-12-24 05:36:53,887 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-68.i [2023-12-24 05:36:53,903 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 05:36:53,904 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 05:36:53,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 05:36:53,967 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;@45deac21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 05:36:53,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 05:36:53,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 57 states have internal predecessors, (78), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 05:36:53,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-24 05:36:53,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 05:36:53,992 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:53,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 05:36:53,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 05:36:53,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1014003031, now seen corresponding path program 1 times [2023-12-24 05:36:54,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 05:36:54,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38805427] [2023-12-24 05:36:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 05:36:54,010 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 05:36:54,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 05:36:54,020 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 05:36:54,027 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 05:36:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 05:36:54,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 05:36:54,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 05:36:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1158 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2023-12-24 05:36:54,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 05:36:54,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 05:36:54,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38805427] [2023-12-24 05:36:54,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38805427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 05:36:54,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 05:36:54,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 05:36:54,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599897825] [2023-12-24 05:36:54,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 05:36:54,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 05:36:54,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 05:36:54,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 05:36:54,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 05:36:54,602 INFO L87 Difference]: Start difference. First operand has 99 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 57 states have internal predecessors, (78), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) 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, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-24 05:36:56,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 05:36:56,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 05:36:56,149 INFO L93 Difference]: Finished difference Result 195 states and 354 transitions. [2023-12-24 05:36:56,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 05:36:56,180 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, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 247 [2023-12-24 05:36:56,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 05:36:56,186 INFO L225 Difference]: With dead ends: 195 [2023-12-24 05:36:56,186 INFO L226 Difference]: Without dead ends: 97 [2023-12-24 05:36:56,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 246 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 05:36:56,193 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 05:36:56,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 05:36:56,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-24 05:36:56,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-12-24 05:36:56,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 55 states have internal predecessors, (73), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 05:36:56,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 153 transitions. [2023-12-24 05:36:56,246 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 153 transitions. Word has length 247 [2023-12-24 05:36:56,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 05:36:56,246 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 153 transitions. [2023-12-24 05:36:56,247 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, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-24 05:36:56,247 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 153 transitions. [2023-12-24 05:36:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-24 05:36:56,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 05:36:56,252 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:56,273 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 05:36:56,468 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 05:36:56,469 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 05:36:56,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 05:36:56,470 INFO L85 PathProgramCache]: Analyzing trace with hash -550382355, now seen corresponding path program 1 times [2023-12-24 05:36:56,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 05:36:56,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100900529] [2023-12-24 05:36:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 05:36:56,471 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 05:36:56,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 05:36:56,473 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 05:36:56,475 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 05:36:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 05:36:56,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 05:36:56,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 05:36:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-24 05:36:57,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 05:36:57,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 05:36:57,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100900529] [2023-12-24 05:36:57,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100900529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 05:36:57,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 05:36:57,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 05:36:57,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839826445] [2023-12-24 05:36:57,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 05:36:57,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 05:36:57,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 05:36:57,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 05:36:57,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 05:36:57,025 INFO L87 Difference]: Start difference. First operand 97 states and 153 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-24 05:36:58,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 05:36:58,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 05:36:58,248 INFO L93 Difference]: Finished difference Result 193 states and 305 transitions. [2023-12-24 05:36:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 05:36:58,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 247 [2023-12-24 05:36:58,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 05:36:58,282 INFO L225 Difference]: With dead ends: 193 [2023-12-24 05:36:58,283 INFO L226 Difference]: Without dead ends: 97 [2023-12-24 05:36:58,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 05:36:58,285 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 30 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 05:36:58,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 265 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 05:36:58,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-24 05:36:58,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-12-24 05:36:58,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 55 states have (on average 1.309090909090909) internal successors, (72), 55 states have internal predecessors, (72), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 05:36:58,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 152 transitions. [2023-12-24 05:36:58,302 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 152 transitions. Word has length 247 [2023-12-24 05:36:58,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 05:36:58,304 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 152 transitions. [2023-12-24 05:36:58,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-24 05:36:58,304 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 152 transitions. [2023-12-24 05:36:58,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-24 05:36:58,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 05:36:58,309 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:58,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 05:36:58,528 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 05:36:58,529 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 05:36:58,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 05:36:58,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1750440235, now seen corresponding path program 1 times [2023-12-24 05:36:58,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 05:36:58,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712372335] [2023-12-24 05:36:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 05:36:58,531 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 05:36:58,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 05:36:58,532 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 05:36:58,536 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 05:36:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 05:36:58,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 05:36:58,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 05:36:59,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1219 proven. 87 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2023-12-24 05:36:59,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 05:37:00,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 30 proven. 87 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2023-12-24 05:37:00,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 05:37:00,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712372335] [2023-12-24 05:37:00,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712372335] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 05:37:00,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 05:37:00,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-24 05:37:00,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169095938] [2023-12-24 05:37:00,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 05:37:00,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 05:37:00,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 05:37:00,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 05:37:00,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-24 05:37:00,417 INFO L87 Difference]: Start difference. First operand 97 states and 152 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2023-12-24 05:37:02,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 05:37:05,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 05:37:05,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 05:37:05,483 INFO L93 Difference]: Finished difference Result 305 states and 468 transitions. [2023-12-24 05:37:05,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 05:37:05,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 247 [2023-12-24 05:37:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 05:37:05,487 INFO L225 Difference]: With dead ends: 305 [2023-12-24 05:37:05,487 INFO L226 Difference]: Without dead ends: 209 [2023-12-24 05:37:05,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 486 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-24 05:37:05,489 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 242 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-24 05:37:05,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 338 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-24 05:37:05,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-12-24 05:37:05,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2023-12-24 05:37:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 114 states have (on average 1.2894736842105263) internal successors, (147), 114 states have internal predecessors, (147), 80 states have call successors, (80), 4 states have call predecessors, (80), 4 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-24 05:37:05,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 307 transitions. [2023-12-24 05:37:05,526 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 307 transitions. Word has length 247 [2023-12-24 05:37:05,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 05:37:05,527 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 307 transitions. [2023-12-24 05:37:05,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2023-12-24 05:37:05,527 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 307 transitions. [2023-12-24 05:37:05,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-24 05:37:05,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 05:37:05,531 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:05,550 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 (4)] Forceful destruction successful, exit code 0 [2023-12-24 05:37:05,748 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 [2023-12-24 05:37:05,748 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 05:37:05,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 05:37:05,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1750499817, now seen corresponding path program 1 times [2023-12-24 05:37:05,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 05:37:05,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875500143] [2023-12-24 05:37:05,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 05:37:05,750 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 05:37:05,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 05:37:05,751 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 05:37:05,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 05:37:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 05:37:06,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 05:37:06,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 05:37:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2073 proven. 228 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2023-12-24 05:37:09,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 05:37:11,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 05:37:11,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875500143] [2023-12-24 05:37:11,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875500143] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 05:37:11,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [858840110] [2023-12-24 05:37:11,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 05:37:11,054 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 05:37:11,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 05:37:11,090 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 05:37:11,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-24 05:37:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 05:37:13,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 05:37:13,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 05:37:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2140 proven. 306 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2023-12-24 05:37:20,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 05:37:23,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [858840110] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 05:37:23,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 05:37:23,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22] total 36 [2023-12-24 05:37:23,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796196953] [2023-12-24 05:37:23,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 05:37:23,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-24 05:37:23,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 05:37:23,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-24 05:37:23,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1406, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 05:37:23,922 INFO L87 Difference]: Start difference. First operand 199 states and 307 transitions. Second operand has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 33 states have internal predecessors, (132), 12 states have call successors, (80), 12 states have call predecessors, (80), 17 states have return successors, (80), 12 states have call predecessors, (80), 12 states have call successors, (80) [2023-12-24 05:37:43,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 05:37:45,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 05:37:57,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 05:37:58,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 05:37:58,129 INFO L93 Difference]: Finished difference Result 638 states and 910 transitions. [2023-12-24 05:37:58,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-24 05:37:58,170 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 33 states have internal predecessors, (132), 12 states have call successors, (80), 12 states have call predecessors, (80), 17 states have return successors, (80), 12 states have call predecessors, (80), 12 states have call successors, (80) Word has length 247 [2023-12-24 05:37:58,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 05:37:58,173 INFO L225 Difference]: With dead ends: 638 [2023-12-24 05:37:58,173 INFO L226 Difference]: Without dead ends: 440 [2023-12-24 05:37:58,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2567 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=1602, Invalid=7137, Unknown=3, NotChecked=0, Total=8742 [2023-12-24 05:37:58,177 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 646 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-24 05:37:58,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1010 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-12-24 05:37:58,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-12-24 05:37:58,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 347. [2023-12-24 05:37:58,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 202 states have (on average 1.1683168316831682) internal successors, (236), 202 states have internal predecessors, (236), 120 states have call successors, (120), 24 states have call predecessors, (120), 24 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-24 05:37:58,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 476 transitions. [2023-12-24 05:37:58,228 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 476 transitions. Word has length 247 [2023-12-24 05:37:58,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 05:37:58,228 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 476 transitions. [2023-12-24 05:37:58,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 33 states have internal predecessors, (132), 12 states have call successors, (80), 12 states have call predecessors, (80), 17 states have return successors, (80), 12 states have call predecessors, (80), 12 states have call successors, (80) [2023-12-24 05:37:58,229 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 476 transitions. [2023-12-24 05:37:58,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-24 05:37:58,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 05:37:58,232 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:58,248 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 (5)] Forceful destruction successful, exit code 0 [2023-12-24 05:37:58,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-24 05:37:58,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 05:37:58,648 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 05:37:58,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 05:37:58,649 INFO L85 PathProgramCache]: Analyzing trace with hash -78265883, now seen corresponding path program 1 times [2023-12-24 05:37:58,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 05:37:58,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021739658] [2023-12-24 05:37:58,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 05:37:58,650 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 05:37:58,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 05:37:58,651 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 05:37:58,652 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 05:37:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 05:37:59,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 05:37:59,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 05:38:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2023-12-24 05:38:00,069 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 05:38:00,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 05:38:00,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021739658] [2023-12-24 05:38:00,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021739658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 05:38:00,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 05:38:00,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 05:38:00,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698599264] [2023-12-24 05:38:00,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 05:38:00,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 05:38:00,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 05:38:00,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 05:38:00,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-24 05:38:00,071 INFO L87 Difference]: Start difference. First operand 347 states and 476 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-24 05:38:02,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 05:38:05,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 05:38:06,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 05:38:06,120 INFO L93 Difference]: Finished difference Result 807 states and 1132 transitions. [2023-12-24 05:38:06,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 05:38:06,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 247 [2023-12-24 05:38:06,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 05:38:06,168 INFO L225 Difference]: With dead ends: 807 [2023-12-24 05:38:06,168 INFO L226 Difference]: Without dead ends: 577 [2023-12-24 05:38:06,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-24 05:38:06,176 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 199 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-24 05:38:06,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 477 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2023-12-24 05:38:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-12-24 05:38:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 383. [2023-12-24 05:38:06,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 238 states have (on average 1.218487394957983) internal successors, (290), 238 states have internal predecessors, (290), 120 states have call successors, (120), 24 states have call predecessors, (120), 24 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-24 05:38:06,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 530 transitions. [2023-12-24 05:38:06,230 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 530 transitions. Word has length 247 [2023-12-24 05:38:06,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 05:38:06,233 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 530 transitions. [2023-12-24 05:38:06,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-12-24 05:38:06,233 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 530 transitions. [2023-12-24 05:38:06,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-24 05:38:06,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 05:38:06,236 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:06,252 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 05:38:06,451 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 05:38:06,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 05:38:06,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 05:38:06,452 INFO L85 PathProgramCache]: Analyzing trace with hash -76418841, now seen corresponding path program 1 times [2023-12-24 05:38:06,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 05:38:06,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83779325] [2023-12-24 05:38:06,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 05:38:06,453 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 05:38:06,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 05:38:06,454 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 05:38:06,455 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 05:38:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 05:38:06,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 05:38:06,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 05:38:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1517 proven. 150 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2023-12-24 05:38:11,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 05:38:14,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 05:38:14,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83779325] [2023-12-24 05:38:14,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83779325] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 05:38:14,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1307096590] [2023-12-24 05:38:14,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 05:38:14,891 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 05:38:14,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 05:38:14,892 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 05:38:14,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-24 05:38:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 05:38:16,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 05:38:16,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 05:38:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1433 proven. 129 refuted. 0 times theorem prover too weak. 1558 trivial. 0 not checked. [2023-12-24 05:38:20,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 05:38:22,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1307096590] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 05:38:22,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 05:38:22,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 21 [2023-12-24 05:38:22,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718614444] [2023-12-24 05:38:22,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 05:38:22,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 05:38:22,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 05:38:22,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 05:38:22,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 05:38:22,375 INFO L87 Difference]: Start difference. First operand 383 states and 530 transitions. Second operand has 22 states, 22 states have (on average 4.136363636363637) internal successors, (91), 20 states have internal predecessors, (91), 5 states have call successors, (49), 5 states have call predecessors, (49), 7 states have return successors, (50), 5 states have call predecessors, (50), 5 states have call successors, (50) [2023-12-24 05:38:26,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 05:38:28,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 05:38:31,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 05:38:33,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 05:38:35,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-24 05:38:37,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 05:38:47,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 05:38:49,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-24 05:38:50,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 05:38:50,872 INFO L93 Difference]: Finished difference Result 1710 states and 2313 transitions. [2023-12-24 05:38:50,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-24 05:38:50,873 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.136363636363637) internal successors, (91), 20 states have internal predecessors, (91), 5 states have call successors, (49), 5 states have call predecessors, (49), 7 states have return successors, (50), 5 states have call predecessors, (50), 5 states have call successors, (50) Word has length 247 [2023-12-24 05:38:50,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 05:38:50,880 INFO L225 Difference]: With dead ends: 1710 [2023-12-24 05:38:50,880 INFO L226 Difference]: Without dead ends: 1444 [2023-12-24 05:38:50,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1534, Invalid=4946, Unknown=0, NotChecked=0, Total=6480 [2023-12-24 05:38:50,883 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1117 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 954 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 3049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 954 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2023-12-24 05:38:50,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 931 Invalid, 3049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [954 Valid, 2095 Invalid, 0 Unknown, 0 Unchecked, 25.2s Time] [2023-12-24 05:38:50,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2023-12-24 05:38:51,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1268. [2023-12-24 05:38:51,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 844 states have (on average 1.231042654028436) internal successors, (1039), 854 states have internal predecessors, (1039), 338 states have call successors, (338), 85 states have call predecessors, (338), 85 states have return successors, (338), 328 states have call predecessors, (338), 338 states have call successors, (338) [2023-12-24 05:38:51,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1715 transitions. [2023-12-24 05:38:51,064 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1715 transitions. Word has length 247 [2023-12-24 05:38:51,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 05:38:51,065 INFO L495 AbstractCegarLoop]: Abstraction has 1268 states and 1715 transitions. [2023-12-24 05:38:51,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.136363636363637) internal successors, (91), 20 states have internal predecessors, (91), 5 states have call successors, (49), 5 states have call predecessors, (49), 7 states have return successors, (50), 5 states have call predecessors, (50), 5 states have call successors, (50) [2023-12-24 05:38:51,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1715 transitions. [2023-12-24 05:38:51,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-24 05:38:51,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 05:38:51,068 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:51,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-24 05:38:51,304 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 05:38:51,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 05:38:51,486 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 05:38:51,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 05:38:51,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1698588521, now seen corresponding path program 1 times [2023-12-24 05:38:51,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 05:38:51,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504342334] [2023-12-24 05:38:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 05:38:51,487 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 05:38:51,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 05:38:51,488 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 05:38:51,490 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 05:38:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 05:38:52,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-24 05:38:52,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 05:43:50,365 WARN L293 SmtUtils]: Spent 1.58m on a formula simplification that was a NOOP. DAG size: 171 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 05:47:48,398 WARN L293 SmtUtils]: Spent 1.78m on a formula simplification that was a NOOP. DAG size: 174 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-24 05:51:18,458 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 (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 05:51:18,458 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 05:51:19,478 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 05:51:19,664 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 05:51:19,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-24 05:51:19,705 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 05:51:19,705 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 248 with TraceHistMax 40,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-24 05:51:19,709 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-24 05:51:19,712 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 05:51:19,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 05:51:19 BoogieIcfgContainer [2023-12-24 05:51:19,716 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 05:51:19,716 INFO L158 Benchmark]: Toolchain (without parser) took 869076.22ms. Allocated memory was 189.8MB in the beginning and 254.8MB in the end (delta: 65.0MB). Free memory was 150.5MB in the beginning and 199.8MB in the end (delta: -49.4MB). Peak memory consumption was 148.6MB. Max. memory is 8.0GB. [2023-12-24 05:51:19,717 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 189.8MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 05:51:19,718 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.37ms. Allocated memory is still 189.8MB. Free memory was 150.1MB in the beginning and 132.6MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-24 05:51:19,718 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.67ms. Allocated memory is still 189.8MB. Free memory was 132.6MB in the beginning and 129.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 05:51:19,719 INFO L158 Benchmark]: Boogie Preprocessor took 84.90ms. Allocated memory is still 189.8MB. Free memory was 129.5MB in the beginning and 124.9MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 05:51:19,719 INFO L158 Benchmark]: RCFGBuilder took 2776.70ms. Allocated memory is still 189.8MB. Free memory was 124.9MB in the beginning and 158.9MB in the end (delta: -34.0MB). Peak memory consumption was 36.4MB. Max. memory is 8.0GB. [2023-12-24 05:51:19,719 INFO L158 Benchmark]: TraceAbstraction took 865834.57ms. Allocated memory was 189.8MB in the beginning and 254.8MB in the end (delta: 65.0MB). Free memory was 158.4MB in the beginning and 199.8MB in the end (delta: -41.4MB). Peak memory consumption was 156.2MB. Max. memory is 8.0GB. [2023-12-24 05:51:19,722 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 189.8MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 323.37ms. Allocated memory is still 189.8MB. Free memory was 150.1MB in the beginning and 132.6MB in the end (delta: 17.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.67ms. Allocated memory is still 189.8MB. Free memory was 132.6MB in the beginning and 129.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 84.90ms. Allocated memory is still 189.8MB. Free memory was 129.5MB in the beginning and 124.9MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 2776.70ms. Allocated memory is still 189.8MB. Free memory was 124.9MB in the beginning and 158.9MB in the end (delta: -34.0MB). Peak memory consumption was 36.4MB. Max. memory is 8.0GB. * TraceAbstraction took 865834.57ms. Allocated memory was 189.8MB in the beginning and 254.8MB in the end (delta: 65.0MB). Free memory was 158.4MB in the beginning and 199.8MB in the end (delta: -41.4MB). Peak memory consumption was 156.2MB. 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 248 with TraceHistMax 40,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 865.8s, OverallIterations: 7, TraceHistogramMax: 40, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 76.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 2265 SdHoareTripleChecker+Valid, 51.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2234 mSDsluCounter, 3171 SdHoareTripleChecker+Invalid, 49.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2256 mSDsCounter, 1365 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3995 IncrementalHoareTripleChecker+Invalid, 5361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1365 mSolverCounterUnsat, 915 mSDtfsCounter, 3995 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2480 GetRequests, 2286 SyntacticMatches, 1 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4458 ImplicationChecksByTransitivity, 35.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1268occurred in iteration=6, InterpolantAutomatonStates: 150, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 473 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 6.0s SatisfiabilityAnalysisTime, 31.9s InterpolantComputationTime, 1976 NumberOfCodeBlocks, 1976 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2214 ConstructedInterpolants, 6 QuantifiedInterpolants, 14507 SizeOfPredicates, 53 NumberOfNonLiveVariables, 3219 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 27093/28080 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