/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_fillercode_fillercodesize_ps-cn-500_file-24.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 11:21:54,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 11:21:54,164 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 11:21:54,168 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 11:21:54,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 11:21:54,190 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 11:21:54,190 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 11:21:54,191 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 11:21:54,191 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 11:21:54,194 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 11:21:54,194 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 11:21:54,194 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 11:21:54,195 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 11:21:54,195 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 11:21:54,196 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 11:21:54,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 11:21:54,196 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 11:21:54,196 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 11:21:54,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 11:21:54,197 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 11:21:54,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 11:21:54,198 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 11:21:54,198 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 11:21:54,198 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 11:21:54,198 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 11:21:54,198 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 11:21:54,199 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 11:21:54,199 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 11:21:54,199 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 11:21:54,199 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 11:21:54,200 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 11:21:54,200 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 11:21:54,200 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 11:21:54,200 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 11:21:54,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:21:54,200 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 11:21:54,201 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 11:21:54,201 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 11:21:54,201 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 11:21:54,201 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 11:21:54,201 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 11:21:54,202 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 11:21:54,202 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 11:21:54,202 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 11:21:54,202 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 11:21:54,202 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 11:21:54,202 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 11:21:54,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 11:21:54,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 11:21:54,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 11:21:54,390 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 11:21:54,390 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 11:21:54,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-24.i [2023-12-16 11:21:55,386 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 11:21:55,562 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 11:21:55,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-24.i [2023-12-16 11:21:55,588 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a75df2adf/f284c8e29d4b4cc9b61e2c1fb2d4c0c0/FLAGcb90b2e54 [2023-12-16 11:21:55,613 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a75df2adf/f284c8e29d4b4cc9b61e2c1fb2d4c0c0 [2023-12-16 11:21:55,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 11:21:55,616 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 11:21:55,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 11:21:55,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 11:21:55,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 11:21:55,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:21:55" (1/1) ... [2023-12-16 11:21:55,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c4271e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:21:55, skipping insertion in model container [2023-12-16 11:21:55,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:21:55" (1/1) ... [2023-12-16 11:21:55,668 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 11:21:55,795 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-24.i[916,929] [2023-12-16 11:21:55,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:21:55,954 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 11:21:55,965 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-24.i[916,929] [2023-12-16 11:21:56,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:21:56,034 INFO L206 MainTranslator]: Completed translation [2023-12-16 11:21:56,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:21:56 WrapperNode [2023-12-16 11:21:56,035 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 11:21:56,036 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 11:21:56,036 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 11:21:56,036 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 11:21:56,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:21:56" (1/1) ... [2023-12-16 11:21:56,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:21:56" (1/1) ... [2023-12-16 11:21:56,112 INFO L138 Inliner]: procedures = 27, calls = 120, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 665 [2023-12-16 11:21:56,112 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 11:21:56,113 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 11:21:56,113 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 11:21:56,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 11:21:56,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:21:56" (1/1) ... [2023-12-16 11:21:56,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:21:56" (1/1) ... [2023-12-16 11:21:56,132 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:21:56" (1/1) ... [2023-12-16 11:21:56,176 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 11:21:56,176 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:21:56" (1/1) ... [2023-12-16 11:21:56,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:21:56" (1/1) ... [2023-12-16 11:21:56,198 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:21:56" (1/1) ... [2023-12-16 11:21:56,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:21:56" (1/1) ... [2023-12-16 11:21:56,207 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:21:56" (1/1) ... [2023-12-16 11:21:56,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:21:56" (1/1) ... [2023-12-16 11:21:56,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 11:21:56,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 11:21:56,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 11:21:56,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 11:21:56,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:21:56" (1/1) ... [2023-12-16 11:21:56,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:21:56,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 11:21:56,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 11:21:56,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 11:21:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 11:21:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 11:21:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 11:21:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 11:21:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 11:21:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 11:21:56,407 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 11:21:56,409 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 11:22:01,795 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 11:22:01,829 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 11:22:01,829 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 11:22:01,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:22:01 BoogieIcfgContainer [2023-12-16 11:22:01,830 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 11:22:01,831 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 11:22:01,831 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 11:22:01,834 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 11:22:01,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 11:21:55" (1/3) ... [2023-12-16 11:22:01,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6224e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:22:01, skipping insertion in model container [2023-12-16 11:22:01,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:21:56" (2/3) ... [2023-12-16 11:22:01,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6224e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:22:01, skipping insertion in model container [2023-12-16 11:22:01,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:22:01" (3/3) ... [2023-12-16 11:22:01,836 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-24.i [2023-12-16 11:22:01,848 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 11:22:01,849 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 11:22:01,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 11:22:01,897 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;@70ff9325, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 11:22:01,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 11:22:01,903 INFO L276 IsEmpty]: Start isEmpty. Operand has 290 states, 180 states have (on average 1.5944444444444446) internal successors, (287), 181 states have internal predecessors, (287), 107 states have call successors, (107), 1 states have call predecessors, (107), 1 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2023-12-16 11:22:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-12-16 11:22:01,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:22:01,925 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:22:01,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:22:01,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:22:01,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1166357361, now seen corresponding path program 1 times [2023-12-16 11:22:01,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:22:01,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951214180] [2023-12-16 11:22:01,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:22:01,940 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 [2023-12-16 11:22:01,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:22:01,942 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) [2023-12-16 11:22:01,961 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 [2023-12-16 11:22:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:22:03,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:22:03,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:22:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 8898 proven. 234 refuted. 0 times theorem prover too weak. 13552 trivial. 0 not checked. [2023-12-16 11:22:04,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:22:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 84 proven. 234 refuted. 0 times theorem prover too weak. 22366 trivial. 0 not checked. [2023-12-16 11:22:04,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:22:04,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951214180] [2023-12-16 11:22:04,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951214180] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:22:04,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:22:04,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 11:22:04,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997110537] [2023-12-16 11:22:04,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:22:04,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 11:22:04,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:22:04,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 11:22:04,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:22:04,676 INFO L87 Difference]: Start difference. First operand has 290 states, 180 states have (on average 1.5944444444444446) internal successors, (287), 181 states have internal predecessors, (287), 107 states have call successors, (107), 1 states have call predecessors, (107), 1 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (185), 2 states have call predecessors, (185), 4 states have return successors, (186), 2 states have call predecessors, (186), 2 states have call successors, (186) [2023-12-16 11:22:06,965 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 [] [2023-12-16 11:22:07,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:22:07,016 INFO L93 Difference]: Finished difference Result 583 states and 1114 transitions. [2023-12-16 11:22:07,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 11:22:07,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (185), 2 states have call predecessors, (185), 4 states have return successors, (186), 2 states have call predecessors, (186), 2 states have call successors, (186) Word has length 669 [2023-12-16 11:22:07,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:22:07,054 INFO L225 Difference]: With dead ends: 583 [2023-12-16 11:22:07,054 INFO L226 Difference]: Without dead ends: 294 [2023-12-16 11:22:07,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1340 GetRequests, 1330 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 11:22:07,060 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 217 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:22:07,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 896 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-16 11:22:07,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-16 11:22:07,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 292. [2023-12-16 11:22:07,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 182 states have (on average 1.532967032967033) internal successors, (279), 182 states have internal predecessors, (279), 107 states have call successors, (107), 2 states have call predecessors, (107), 2 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2023-12-16 11:22:07,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 493 transitions. [2023-12-16 11:22:07,119 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 493 transitions. Word has length 669 [2023-12-16 11:22:07,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:22:07,120 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 493 transitions. [2023-12-16 11:22:07,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (185), 2 states have call predecessors, (185), 4 states have return successors, (186), 2 states have call predecessors, (186), 2 states have call successors, (186) [2023-12-16 11:22:07,121 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 493 transitions. [2023-12-16 11:22:07,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2023-12-16 11:22:07,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:22:07,132 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:22:07,164 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 [2023-12-16 11:22:07,340 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 [2023-12-16 11:22:07,340 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:22:07,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:22:07,341 INFO L85 PathProgramCache]: Analyzing trace with hash 595201912, now seen corresponding path program 1 times [2023-12-16 11:22:07,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:22:07,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259667073] [2023-12-16 11:22:07,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:22:07,343 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 [2023-12-16 11:22:07,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:22:07,344 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) [2023-12-16 11:22:07,345 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 [2023-12-16 11:22:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:22:08,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:22:08,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:22:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 8478 proven. 240 refuted. 0 times theorem prover too weak. 13966 trivial. 0 not checked. [2023-12-16 11:22:09,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:22:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 78 proven. 240 refuted. 0 times theorem prover too weak. 22366 trivial. 0 not checked. [2023-12-16 11:22:09,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:22:09,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259667073] [2023-12-16 11:22:09,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259667073] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:22:09,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:22:09,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 11:22:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674685438] [2023-12-16 11:22:09,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:22:09,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 11:22:09,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:22:09,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 11:22:09,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:22:09,732 INFO L87 Difference]: Start difference. First operand 292 states and 493 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (187), 2 states have call predecessors, (187), 4 states have return successors, (188), 2 states have call predecessors, (188), 2 states have call successors, (188) [2023-12-16 11:22:11,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:22:11,778 INFO L93 Difference]: Finished difference Result 631 states and 1056 transitions. [2023-12-16 11:22:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 11:22:11,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (187), 2 states have call predecessors, (187), 4 states have return successors, (188), 2 states have call predecessors, (188), 2 states have call successors, (188) Word has length 671 [2023-12-16 11:22:11,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:22:11,782 INFO L225 Difference]: With dead ends: 631 [2023-12-16 11:22:11,782 INFO L226 Difference]: Without dead ends: 340 [2023-12-16 11:22:11,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1344 GetRequests, 1334 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 11:22:11,784 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 219 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 11:22:11,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 966 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 11:22:11,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-12-16 11:22:11,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 335. [2023-12-16 11:22:11,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 198 states have (on average 1.4444444444444444) internal successors, (286), 199 states have internal predecessors, (286), 133 states have call successors, (133), 3 states have call predecessors, (133), 3 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2023-12-16 11:22:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 552 transitions. [2023-12-16 11:22:11,815 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 552 transitions. Word has length 671 [2023-12-16 11:22:11,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:22:11,816 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 552 transitions. [2023-12-16 11:22:11,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (187), 2 states have call predecessors, (187), 4 states have return successors, (188), 2 states have call predecessors, (188), 2 states have call successors, (188) [2023-12-16 11:22:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 552 transitions. [2023-12-16 11:22:11,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2023-12-16 11:22:11,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:22:11,825 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:22:11,854 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 [2023-12-16 11:22:12,052 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 [2023-12-16 11:22:12,052 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:22:12,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:22:12,053 INFO L85 PathProgramCache]: Analyzing trace with hash -494439660, now seen corresponding path program 1 times [2023-12-16 11:22:12,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:22:12,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399159287] [2023-12-16 11:22:12,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:22:12,054 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 [2023-12-16 11:22:12,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:22:12,055 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) [2023-12-16 11:22:12,056 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 [2023-12-16 11:22:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:22:13,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:22:13,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:22:13,773 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 8026 proven. 246 refuted. 0 times theorem prover too weak. 14412 trivial. 0 not checked. [2023-12-16 11:22:13,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:22:14,293 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 72 proven. 246 refuted. 0 times theorem prover too weak. 22366 trivial. 0 not checked. [2023-12-16 11:22:14,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:22:14,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399159287] [2023-12-16 11:22:14,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399159287] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:22:14,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:22:14,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 11:22:14,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058625476] [2023-12-16 11:22:14,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:22:14,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 11:22:14,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:22:14,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 11:22:14,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:22:14,297 INFO L87 Difference]: Start difference. First operand 335 states and 552 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (189), 2 states have call predecessors, (189), 4 states have return successors, (190), 2 states have call predecessors, (190), 2 states have call successors, (190) [2023-12-16 11:22:16,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:22:16,603 INFO L93 Difference]: Finished difference Result 639 states and 1044 transitions. [2023-12-16 11:22:16,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 11:22:16,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (189), 2 states have call predecessors, (189), 4 states have return successors, (190), 2 states have call predecessors, (190), 2 states have call successors, (190) Word has length 672 [2023-12-16 11:22:16,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:22:16,607 INFO L225 Difference]: With dead ends: 639 [2023-12-16 11:22:16,608 INFO L226 Difference]: Without dead ends: 346 [2023-12-16 11:22:16,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1346 GetRequests, 1336 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 11:22:16,609 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 177 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:22:16,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 916 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-16 11:22:16,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-12-16 11:22:16,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 342. [2023-12-16 11:22:16,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 203 states have (on average 1.3793103448275863) internal successors, (280), 204 states have internal predecessors, (280), 133 states have call successors, (133), 5 states have call predecessors, (133), 5 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2023-12-16 11:22:16,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 546 transitions. [2023-12-16 11:22:16,643 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 546 transitions. Word has length 672 [2023-12-16 11:22:16,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:22:16,643 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 546 transitions. [2023-12-16 11:22:16,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (189), 2 states have call predecessors, (189), 4 states have return successors, (190), 2 states have call predecessors, (190), 2 states have call successors, (190) [2023-12-16 11:22:16,644 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 546 transitions. [2023-12-16 11:22:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2023-12-16 11:22:16,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:22:16,648 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:22:16,681 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 [2023-12-16 11:22:16,852 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 [2023-12-16 11:22:16,853 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:22:16,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:22:16,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2139778202, now seen corresponding path program 1 times [2023-12-16 11:22:16,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:22:16,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730309545] [2023-12-16 11:22:16,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:22:16,854 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 [2023-12-16 11:22:16,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:22:16,855 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) [2023-12-16 11:22:16,857 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 [2023-12-16 11:22:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:22:17,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 11:22:17,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:22:18,595 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 10636 proven. 201 refuted. 0 times theorem prover too weak. 11847 trivial. 0 not checked. [2023-12-16 11:22:18,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:22:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22684 trivial. 0 not checked. [2023-12-16 11:22:18,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:22:18,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730309545] [2023-12-16 11:22:18,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730309545] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 11:22:18,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 11:22:18,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-16 11:22:18,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162859142] [2023-12-16 11:22:18,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:22:18,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 11:22:18,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:22:18,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 11:22:18,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 11:22:18,841 INFO L87 Difference]: Start difference. First operand 342 states and 546 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (107), 1 states have call predecessors, (107), 1 states have return successors, (107), 1 states have call predecessors, (107), 1 states have call successors, (107) [2023-12-16 11:22:19,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:22:20,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:22:20,323 INFO L93 Difference]: Finished difference Result 786 states and 1249 transitions. [2023-12-16 11:22:20,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 11:22:20,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (107), 1 states have call predecessors, (107), 1 states have return successors, (107), 1 states have call predecessors, (107), 1 states have call successors, (107) Word has length 674 [2023-12-16 11:22:20,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:22:20,327 INFO L225 Difference]: With dead ends: 786 [2023-12-16 11:22:20,327 INFO L226 Difference]: Without dead ends: 490 [2023-12-16 11:22:20,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1346 GetRequests, 1339 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 11:22:20,329 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 431 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 11:22:20,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1068 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 11:22:20,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-16 11:22:20,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 487. [2023-12-16 11:22:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 305 states have (on average 1.4065573770491804) internal successors, (429), 307 states have internal predecessors, (429), 171 states have call successors, (171), 10 states have call predecessors, (171), 10 states have return successors, (171), 169 states have call predecessors, (171), 171 states have call successors, (171) [2023-12-16 11:22:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 771 transitions. [2023-12-16 11:22:20,370 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 771 transitions. Word has length 674 [2023-12-16 11:22:20,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:22:20,372 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 771 transitions. [2023-12-16 11:22:20,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (107), 1 states have call predecessors, (107), 1 states have return successors, (107), 1 states have call predecessors, (107), 1 states have call successors, (107) [2023-12-16 11:22:20,372 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 771 transitions. [2023-12-16 11:22:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2023-12-16 11:22:20,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:22:20,378 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:22:20,412 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 [2023-12-16 11:22:20,584 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 [2023-12-16 11:22:20,584 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:22:20,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:22:20,585 INFO L85 PathProgramCache]: Analyzing trace with hash -294411036, now seen corresponding path program 1 times [2023-12-16 11:22:20,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:22:20,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008403807] [2023-12-16 11:22:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:22:20,586 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 [2023-12-16 11:22:20,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:22:20,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:22:20,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 11:22:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:22:21,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:22:21,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:22:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22684 trivial. 0 not checked. [2023-12-16 11:22:22,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:22:22,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:22:22,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008403807] [2023-12-16 11:22:22,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008403807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:22:22,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:22:22,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:22:22,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783319659] [2023-12-16 11:22:22,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:22:22,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:22:22,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:22:22,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:22:22,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:22:22,770 INFO L87 Difference]: Start difference. First operand 487 states and 771 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 1 states have call successors, (107), 1 states have call predecessors, (107), 1 states have return successors, (107), 1 states have call predecessors, (107), 1 states have call successors, (107) [2023-12-16 11:22:23,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:22:23,394 INFO L93 Difference]: Finished difference Result 1351 states and 2139 transitions. [2023-12-16 11:22:23,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:22:23,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 1 states have call successors, (107), 1 states have call predecessors, (107), 1 states have return successors, (107), 1 states have call predecessors, (107), 1 states have call successors, (107) Word has length 674 [2023-12-16 11:22:23,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:22:23,400 INFO L225 Difference]: With dead ends: 1351 [2023-12-16 11:22:23,400 INFO L226 Difference]: Without dead ends: 910 [2023-12-16 11:22:23,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 672 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:22:23,403 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 141 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 11:22:23,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 921 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 11:22:23,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-12-16 11:22:23,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 812. [2023-12-16 11:22:23,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 518 states have (on average 1.416988416988417) internal successors, (734), 520 states have internal predecessors, (734), 278 states have call successors, (278), 15 states have call predecessors, (278), 15 states have return successors, (278), 276 states have call predecessors, (278), 278 states have call successors, (278) [2023-12-16 11:22:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1290 transitions. [2023-12-16 11:22:23,461 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1290 transitions. Word has length 674 [2023-12-16 11:22:23,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:22:23,462 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1290 transitions. [2023-12-16 11:22:23,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 1 states have call successors, (107), 1 states have call predecessors, (107), 1 states have return successors, (107), 1 states have call predecessors, (107), 1 states have call successors, (107) [2023-12-16 11:22:23,462 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1290 transitions. [2023-12-16 11:22:23,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2023-12-16 11:22:23,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:22:23,466 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:22:23,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 11:22:23,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:22:23,680 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:22:23,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:22:23,681 INFO L85 PathProgramCache]: Analyzing trace with hash 745455712, now seen corresponding path program 1 times [2023-12-16 11:22:23,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:22:23,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906270165] [2023-12-16 11:22:23,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:22:23,682 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 [2023-12-16 11:22:23,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:22:23,683 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) [2023-12-16 11:22:23,683 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 [2023-12-16 11:22:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:22:24,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:22:24,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:22:25,022 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 7666 proven. 66 refuted. 0 times theorem prover too weak. 14952 trivial. 0 not checked. [2023-12-16 11:22:25,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:22:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 252 proven. 66 refuted. 0 times theorem prover too weak. 22366 trivial. 0 not checked. [2023-12-16 11:22:25,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:22:25,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906270165] [2023-12-16 11:22:25,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906270165] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:22:25,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:22:25,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 11:22:25,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779946575] [2023-12-16 11:22:25,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:22:25,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 11:22:25,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:22:25,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 11:22:25,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:22:25,363 INFO L87 Difference]: Start difference. First operand 812 states and 1290 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) [2023-12-16 11:22:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:22:27,245 INFO L93 Difference]: Finished difference Result 1602 states and 2531 transitions. [2023-12-16 11:22:27,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 11:22:27,273 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) Word has length 674 [2023-12-16 11:22:27,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:22:27,277 INFO L225 Difference]: With dead ends: 1602 [2023-12-16 11:22:27,277 INFO L226 Difference]: Without dead ends: 836 [2023-12-16 11:22:27,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1350 GetRequests, 1340 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 11:22:27,280 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 444 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 11:22:27,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 845 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 11:22:27,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2023-12-16 11:22:27,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 820. [2023-12-16 11:22:27,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 524 states have (on average 1.4045801526717556) internal successors, (736), 526 states have internal predecessors, (736), 278 states have call successors, (278), 17 states have call predecessors, (278), 17 states have return successors, (278), 276 states have call predecessors, (278), 278 states have call successors, (278) [2023-12-16 11:22:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1292 transitions. [2023-12-16 11:22:27,326 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1292 transitions. Word has length 674 [2023-12-16 11:22:27,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:22:27,326 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 1292 transitions. [2023-12-16 11:22:27,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) [2023-12-16 11:22:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1292 transitions. [2023-12-16 11:22:27,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2023-12-16 11:22:27,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:22:27,331 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:22:27,366 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 [2023-12-16 11:22:27,552 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 [2023-12-16 11:22:27,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:22:27,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:22:27,553 INFO L85 PathProgramCache]: Analyzing trace with hash -72192738, now seen corresponding path program 1 times [2023-12-16 11:22:27,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:22:27,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759847758] [2023-12-16 11:22:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:22:27,554 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 [2023-12-16 11:22:27,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:22:27,556 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) [2023-12-16 11:22:27,590 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 [2023-12-16 11:22:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:22:28,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 11:22:28,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:22:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22684 trivial. 0 not checked. [2023-12-16 11:22:31,172 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:22:31,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:22:31,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759847758] [2023-12-16 11:22:31,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759847758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:22:31,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:22:31,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 11:22:31,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109270253] [2023-12-16 11:22:31,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:22:31,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 11:22:31,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:22:31,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 11:22:31,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 11:22:31,174 INFO L87 Difference]: Start difference. First operand 820 states and 1292 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (107), 1 states have call predecessors, (107), 1 states have return successors, (107), 1 states have call predecessors, (107), 1 states have call successors, (107) [2023-12-16 11:22:33,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:22:34,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:22:34,329 INFO L93 Difference]: Finished difference Result 2415 states and 3810 transitions. [2023-12-16 11:22:34,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 11:22:34,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (107), 1 states have call predecessors, (107), 1 states have return successors, (107), 1 states have call predecessors, (107), 1 states have call successors, (107) Word has length 674 [2023-12-16 11:22:34,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:22:34,362 INFO L225 Difference]: With dead ends: 2415 [2023-12-16 11:22:34,363 INFO L226 Difference]: Without dead ends: 1641 [2023-12-16 11:22:34,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 671 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 11:22:34,365 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 364 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-16 11:22:34,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1389 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-16 11:22:34,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2023-12-16 11:22:34,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1428. [2023-12-16 11:22:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 906 states have (on average 1.3929359823399559) internal successors, (1262), 908 states have internal predecessors, (1262), 492 states have call successors, (492), 29 states have call predecessors, (492), 29 states have return successors, (492), 490 states have call predecessors, (492), 492 states have call successors, (492) [2023-12-16 11:22:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2246 transitions. [2023-12-16 11:22:34,514 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2246 transitions. Word has length 674 [2023-12-16 11:22:34,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:22:34,514 INFO L495 AbstractCegarLoop]: Abstraction has 1428 states and 2246 transitions. [2023-12-16 11:22:34,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (107), 1 states have call predecessors, (107), 1 states have return successors, (107), 1 states have call predecessors, (107), 1 states have call successors, (107) [2023-12-16 11:22:34,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2246 transitions. [2023-12-16 11:22:34,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-12-16 11:22:34,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:22:34,519 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:22:34,553 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 [2023-12-16 11:22:34,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:22:34,729 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:22:34,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:22:34,729 INFO L85 PathProgramCache]: Analyzing trace with hash -2047320383, now seen corresponding path program 1 times [2023-12-16 11:22:34,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:22:34,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769457806] [2023-12-16 11:22:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:22:34,730 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 [2023-12-16 11:22:34,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:22:34,731 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:22:34,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 11:22:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:22:35,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 11:22:35,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:22:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 6756 proven. 261 refuted. 0 times theorem prover too weak. 15667 trivial. 0 not checked. [2023-12-16 11:22:36,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:22:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 22684 backedges. 57 proven. 261 refuted. 0 times theorem prover too weak. 22366 trivial. 0 not checked. [2023-12-16 11:22:37,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:22:37,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769457806] [2023-12-16 11:22:37,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769457806] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:22:37,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:22:37,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-16 11:22:37,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477713388] [2023-12-16 11:22:37,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:22:37,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 11:22:37,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:22:37,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 11:22:37,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-16 11:22:37,466 INFO L87 Difference]: Start difference. First operand 1428 states and 2246 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 2 states have call successors, (194), 2 states have call predecessors, (194), 4 states have return successors, (195), 2 states have call predecessors, (195), 2 states have call successors, (195) [2023-12-16 11:22:41,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:22:41,041 INFO L93 Difference]: Finished difference Result 3211 states and 5008 transitions. [2023-12-16 11:22:41,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 11:22:41,042 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 2 states have call successors, (194), 2 states have call predecessors, (194), 4 states have return successors, (195), 2 states have call predecessors, (195), 2 states have call successors, (195) Word has length 675 [2023-12-16 11:22:41,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:22:41,049 INFO L225 Difference]: With dead ends: 3211 [2023-12-16 11:22:41,049 INFO L226 Difference]: Without dead ends: 1829 [2023-12-16 11:22:41,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1360 GetRequests, 1342 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-16 11:22:41,054 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 532 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:22:41,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 1909 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-16 11:22:41,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2023-12-16 11:22:41,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1318. [2023-12-16 11:22:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 818 states have (on average 1.354523227383863) internal successors, (1108), 819 states have internal predecessors, (1108), 466 states have call successors, (466), 33 states have call predecessors, (466), 33 states have return successors, (466), 465 states have call predecessors, (466), 466 states have call successors, (466) [2023-12-16 11:22:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 2040 transitions. [2023-12-16 11:22:41,228 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 2040 transitions. Word has length 675 [2023-12-16 11:22:41,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:22:41,229 INFO L495 AbstractCegarLoop]: Abstraction has 1318 states and 2040 transitions. [2023-12-16 11:22:41,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 2 states have call successors, (194), 2 states have call predecessors, (194), 4 states have return successors, (195), 2 states have call predecessors, (195), 2 states have call successors, (195) [2023-12-16 11:22:41,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 2040 transitions. [2023-12-16 11:22:41,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-12-16 11:22:41,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:22:41,234 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:22:41,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 11:22:41,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:22:41,452 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:22:41,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:22:41,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1438300287, now seen corresponding path program 1 times [2023-12-16 11:22:41,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:22:41,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551934746] [2023-12-16 11:22:41,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:22:41,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:22:41,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:22:41,455 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:22:41,479 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 [2023-12-16 11:22:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:22:42,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 11:22:42,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 11:23:04,042 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 11:23:04,051 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 [2023-12-16 11:23:04,060 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:23:04,078 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 [2023-12-16 11:23:04,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:23:04,256 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 676 with TraceHistMax 107,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-8-2-1 context. [2023-12-16 11:23:04,260 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:23:04,262 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 11:23:04,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 11:23:04 BoogieIcfgContainer [2023-12-16 11:23:04,264 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 11:23:04,265 INFO L158 Benchmark]: Toolchain (without parser) took 68648.66ms. Allocated memory was 217.1MB in the beginning and 418.4MB in the end (delta: 201.3MB). Free memory was 170.5MB in the beginning and 326.8MB in the end (delta: -156.3MB). Peak memory consumption was 44.9MB. Max. memory is 8.0GB. [2023-12-16 11:23:04,265 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 217.1MB. Free memory is still 174.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 11:23:04,265 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.09ms. Allocated memory is still 217.1MB. Free memory was 170.2MB in the beginning and 138.7MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-12-16 11:23:04,265 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.69ms. Allocated memory is still 217.1MB. Free memory was 138.4MB in the beginning and 132.5MB in the end (delta: 5.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 11:23:04,265 INFO L158 Benchmark]: Boogie Preprocessor took 103.08ms. Allocated memory is still 217.1MB. Free memory was 132.5MB in the beginning and 181.8MB in the end (delta: -49.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-16 11:23:04,266 INFO L158 Benchmark]: RCFGBuilder took 5613.44ms. Allocated memory is still 217.1MB. Free memory was 181.3MB in the beginning and 113.6MB in the end (delta: 67.6MB). Peak memory consumption was 67.1MB. Max. memory is 8.0GB. [2023-12-16 11:23:04,266 INFO L158 Benchmark]: TraceAbstraction took 62433.05ms. Allocated memory was 217.1MB in the beginning and 418.4MB in the end (delta: 201.3MB). Free memory was 112.6MB in the beginning and 326.8MB in the end (delta: -214.2MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 11:23:04,267 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 217.1MB. Free memory is still 174.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 418.09ms. Allocated memory is still 217.1MB. Free memory was 170.2MB in the beginning and 138.7MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 76.69ms. Allocated memory is still 217.1MB. Free memory was 138.4MB in the beginning and 132.5MB in the end (delta: 5.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 103.08ms. Allocated memory is still 217.1MB. Free memory was 132.5MB in the beginning and 181.8MB in the end (delta: -49.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 5613.44ms. Allocated memory is still 217.1MB. Free memory was 181.3MB in the beginning and 113.6MB in the end (delta: 67.6MB). Peak memory consumption was 67.1MB. Max. memory is 8.0GB. * TraceAbstraction took 62433.05ms. Allocated memory was 217.1MB in the beginning and 418.4MB in the end (delta: 201.3MB). Free memory was 112.6MB in the beginning and 326.8MB in the end (delta: -214.2MB). There was no memory consumed. 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 676 with TraceHistMax 107,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-8-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 290 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 62.4s, OverallIterations: 9, TraceHistogramMax: 107, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 17.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2706 SdHoareTripleChecker+Valid, 16.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2525 mSDsluCounter, 8910 SdHoareTripleChecker+Invalid, 15.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5334 mSDsCounter, 796 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3819 IncrementalHoareTripleChecker+Invalid, 4615 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 796 mSolverCounterUnsat, 3576 mSDtfsCounter, 3819 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9433 GetRequests, 9364 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1428occurred in iteration=7, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 852 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 7.3s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 5383 NumberOfCodeBlocks, 5383 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 9404 ConstructedInterpolants, 0 QuantifiedInterpolants, 27404 SizeOfPredicates, 17 NumberOfNonLiveVariables, 8656 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 315281/317576 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