/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/array-lopstr16/sum_multi_array.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 07:11:39,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 07:11:39,756 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 07:11:39,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 07:11:39,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 07:11:39,784 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 07:11:39,785 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 07:11:39,785 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 07:11:39,785 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 07:11:39,788 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 07:11:39,788 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 07:11:39,789 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 07:11:39,789 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 07:11:39,790 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 07:11:39,790 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 07:11:39,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 07:11:39,791 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 07:11:39,791 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 07:11:39,791 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 07:11:39,792 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 07:11:39,792 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 07:11:39,793 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 07:11:39,793 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 07:11:39,793 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 07:11:39,793 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 07:11:39,793 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 07:11:39,793 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 07:11:39,793 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 07:11:39,794 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 07:11:39,794 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 07:11:39,794 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 07:11:39,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 07:11:39,795 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 07:11:39,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 07:11:39,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:11:39,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 07:11:39,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 07:11:39,795 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 07:11:39,795 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 07:11:39,795 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 07:11:39,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 07:11:39,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 07:11:39,796 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 07:11:39,796 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 07:11:39,796 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 07:11:39,796 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 07:11:39,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 07:11:39,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 07:11:39,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 07:11:39,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 07:11:39,991 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 07:11:39,991 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 07:11:39,993 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-lopstr16/sum_multi_array.i [2023-12-16 07:11:41,060 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 07:11:41,198 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 07:11:41,198 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-lopstr16/sum_multi_array.i [2023-12-16 07:11:41,203 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/636a09174/e2f156f856d140129edc9d5905776d99/FLAGbc2f8bc84 [2023-12-16 07:11:41,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/636a09174/e2f156f856d140129edc9d5905776d99 [2023-12-16 07:11:41,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 07:11:41,216 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 07:11:41,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 07:11:41,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 07:11:41,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 07:11:41,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:11:41" (1/1) ... [2023-12-16 07:11:41,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@688fb2db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:11:41, skipping insertion in model container [2023-12-16 07:11:41,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:11:41" (1/1) ... [2023-12-16 07:11:41,236 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 07:11:41,335 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-lopstr16/sum_multi_array.i[808,821] [2023-12-16 07:11:41,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:11:53,053 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 07:11:53,076 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-lopstr16/sum_multi_array.i[808,821] [2023-12-16 07:11:53,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:11:53,115 INFO L206 MainTranslator]: Completed translation [2023-12-16 07:11:53,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:11:53 WrapperNode [2023-12-16 07:11:53,116 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 07:11:53,117 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 07:11:53,117 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 07:11:53,117 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 07:11:53,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:11:53" (1/1) ... [2023-12-16 07:11:53,140 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:11:53" (1/1) ... [2023-12-16 07:11:53,162 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-12-16 07:11:53,162 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 07:11:53,176 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 07:11:53,176 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 07:11:53,176 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 07:11:53,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:11:53" (1/1) ... [2023-12-16 07:11:53,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:11:53" (1/1) ... [2023-12-16 07:11:53,206 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:11:53" (1/1) ... [2023-12-16 07:11:53,230 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 4, 4, 3]. 31 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 2, 2, 2]. [2023-12-16 07:11:53,230 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:11:53" (1/1) ... [2023-12-16 07:11:53,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:11:53" (1/1) ... [2023-12-16 07:11:53,233 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:11:53" (1/1) ... [2023-12-16 07:11:53,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:11:53" (1/1) ... [2023-12-16 07:11:53,244 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:11:53" (1/1) ... [2023-12-16 07:11:53,245 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:11:53" (1/1) ... [2023-12-16 07:11:53,249 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 07:11:53,250 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 07:11:53,250 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 07:11:53,250 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 07:11:53,251 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:11:53" (1/1) ... [2023-12-16 07:11:53,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:11:53,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 07:11:53,392 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 07:11:53,400 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 07:11:53,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 07:11:53,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 07:11:53,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 07:11:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 07:11:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-16 07:11:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 07:11:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 07:11:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-16 07:11:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-16 07:11:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 07:11:53,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 07:11:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 07:11:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 07:11:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-16 07:11:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-16 07:11:53,498 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 07:11:53,499 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 07:11:53,648 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 07:11:53,713 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 07:11:53,713 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-16 07:11:53,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:11:53 BoogieIcfgContainer [2023-12-16 07:11:53,714 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 07:11:53,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 07:11:53,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 07:11:53,734 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 07:11:53,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:11:41" (1/3) ... [2023-12-16 07:11:53,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3ebb6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:11:53, skipping insertion in model container [2023-12-16 07:11:53,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:11:53" (2/3) ... [2023-12-16 07:11:53,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3ebb6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:11:53, skipping insertion in model container [2023-12-16 07:11:53,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:11:53" (3/3) ... [2023-12-16 07:11:53,739 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_multi_array.i [2023-12-16 07:11:53,751 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 07:11:53,751 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 07:11:53,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 07:11:53,837 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;@3ac56b66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 07:11:53,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 07:11:53,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:11:53,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 07:11:53,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:11:53,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:11:53,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:11:53,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:11:53,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1223517790, now seen corresponding path program 1 times [2023-12-16 07:11:53,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:11:53,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616697265] [2023-12-16 07:11:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:11:53,875 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 07:11:53,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:11:53,892 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 07:11:53,893 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 07:11:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:11:54,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 07:11:54,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:11:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 07:11:54,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:11:54,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:11:54,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616697265] [2023-12-16 07:11:54,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616697265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:11:54,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:11:54,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 07:11:54,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615229205] [2023-12-16 07:11:54,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:11:54,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 07:11:54,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:11:54,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 07:11:54,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 07:11:54,120 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:11:54,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:11:54,173 INFO L93 Difference]: Finished difference Result 29 states and 46 transitions. [2023-12-16 07:11:54,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 07:11:54,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-16 07:11:54,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:11:54,180 INFO L225 Difference]: With dead ends: 29 [2023-12-16 07:11:54,180 INFO L226 Difference]: Without dead ends: 17 [2023-12-16 07:11:54,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 07:11:54,184 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:11:54,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 11 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:11:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-16 07:11:54,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2023-12-16 07:11:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:11:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-12-16 07:11:54,233 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2023-12-16 07:11:54,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:11:54,233 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-12-16 07:11:54,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:11:54,233 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-12-16 07:11:54,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 07:11:54,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:11:54,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:11:54,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 07:11:54,434 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 07:11:54,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:11:54,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:11:54,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1462166447, now seen corresponding path program 1 times [2023-12-16 07:11:54,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:11:54,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183313577] [2023-12-16 07:11:54,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:11:54,436 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 07:11:54,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:11:54,451 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 07:11:54,472 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 07:11:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:11:54,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 07:11:54,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:11:54,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 07:11:54,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:11:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 07:11:54,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:11:54,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183313577] [2023-12-16 07:11:54,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183313577] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:11:54,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:11:54,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-16 07:11:54,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672046811] [2023-12-16 07:11:54,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:11:54,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 07:11:54,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:11:54,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 07:11:54,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:11:54,563 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:11:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:11:54,702 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2023-12-16 07:11:54,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 07:11:54,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-16 07:11:54,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:11:54,703 INFO L225 Difference]: With dead ends: 43 [2023-12-16 07:11:54,703 INFO L226 Difference]: Without dead ends: 34 [2023-12-16 07:11:54,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 07:11:54,704 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:11:54,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 19 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:11:54,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-16 07:11:54,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 18. [2023-12-16 07:11:54,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:11:54,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-12-16 07:11:54,708 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2023-12-16 07:11:54,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:11:54,709 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-12-16 07:11:54,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:11:54,709 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-12-16 07:11:54,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 07:11:54,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:11:54,709 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:11:54,727 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 07:11:54,911 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 07:11:54,912 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:11:54,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:11:54,912 INFO L85 PathProgramCache]: Analyzing trace with hash -830634722, now seen corresponding path program 2 times [2023-12-16 07:11:54,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:11:54,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082686031] [2023-12-16 07:11:54,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 07:11:54,913 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 07:11:54,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:11:54,914 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 07:11:54,968 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 07:11:55,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 07:11:55,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:11:55,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 07:11:55,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:11:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 07:11:55,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:11:55,241 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 07:11:55,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:11:55,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082686031] [2023-12-16 07:11:55,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082686031] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:11:55,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:11:55,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-16 07:11:55,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180138752] [2023-12-16 07:11:55,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:11:55,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 07:11:55,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:11:55,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 07:11:55,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 07:11:55,243 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:11:55,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:11:55,789 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2023-12-16 07:11:55,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 07:11:55,789 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-16 07:11:55,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:11:55,790 INFO L225 Difference]: With dead ends: 88 [2023-12-16 07:11:55,790 INFO L226 Difference]: Without dead ends: 76 [2023-12-16 07:11:55,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-16 07:11:55,791 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 144 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 07:11:55,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 91 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 07:11:55,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-16 07:11:55,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 30. [2023-12-16 07:11:55,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:11:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-12-16 07:11:55,800 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2023-12-16 07:11:55,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:11:55,801 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-12-16 07:11:55,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:11:55,801 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-12-16 07:11:55,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 07:11:55,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:11:55,802 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:11:55,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 07:11:56,002 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 07:11:56,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:11:56,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:11:56,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1958692670, now seen corresponding path program 3 times [2023-12-16 07:11:56,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:11:56,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011868128] [2023-12-16 07:11:56,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 07:11:56,004 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 07:11:56,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:11:56,005 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 07:11:56,007 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 07:11:56,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-16 07:11:56,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:11:56,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 07:11:56,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:11:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-16 07:11:56,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:11:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-16 07:11:56,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:11:56,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011868128] [2023-12-16 07:11:56,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011868128] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:11:56,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:11:56,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-16 07:11:56,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725576985] [2023-12-16 07:11:56,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:11:56,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 07:11:56,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:11:56,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 07:11:56,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-16 07:11:56,906 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:11:59,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:11:59,137 INFO L93 Difference]: Finished difference Result 178 states and 205 transitions. [2023-12-16 07:11:59,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 07:11:59,137 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-16 07:11:59,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:11:59,138 INFO L225 Difference]: With dead ends: 178 [2023-12-16 07:11:59,138 INFO L226 Difference]: Without dead ends: 160 [2023-12-16 07:11:59,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 07:11:59,140 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 536 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 07:11:59,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 397 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 07:11:59,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-16 07:11:59,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 54. [2023-12-16 07:11:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:11:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2023-12-16 07:11:59,154 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 28 [2023-12-16 07:11:59,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:11:59,154 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2023-12-16 07:11:59,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:11:59,154 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2023-12-16 07:11:59,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 07:11:59,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:11:59,169 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:11:59,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-16 07:11:59,374 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 07:11:59,374 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:11:59,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:11:59,375 INFO L85 PathProgramCache]: Analyzing trace with hash -863497346, now seen corresponding path program 4 times [2023-12-16 07:11:59,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:11:59,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381142945] [2023-12-16 07:11:59,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 07:11:59,375 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 07:11:59,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:11:59,377 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 07:11:59,378 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 07:11:59,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 07:11:59,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:11:59,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 07:11:59,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:11:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-16 07:11:59,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:12:00,988 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-16 07:12:00,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:12:00,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381142945] [2023-12-16 07:12:00,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381142945] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:12:00,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:12:00,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-16 07:12:00,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224412946] [2023-12-16 07:12:00,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:12:00,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-16 07:12:00,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:12:00,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-16 07:12:00,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-16 07:12:00,991 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 48 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:12:09,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:12:09,937 INFO L93 Difference]: Finished difference Result 358 states and 409 transitions. [2023-12-16 07:12:09,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-16 07:12:09,939 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-16 07:12:09,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:12:09,941 INFO L225 Difference]: With dead ends: 358 [2023-12-16 07:12:09,941 INFO L226 Difference]: Without dead ends: 328 [2023-12-16 07:12:09,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-16 07:12:09,943 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 2460 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 1256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 3581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1256 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-16 07:12:09,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2460 Valid, 1657 Invalid, 3581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1256 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-16 07:12:09,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-12-16 07:12:09,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 102. [2023-12-16 07:12:09,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0297029702970297) internal successors, (104), 101 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:12:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2023-12-16 07:12:09,966 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 52 [2023-12-16 07:12:09,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:12:09,966 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2023-12-16 07:12:09,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:12:09,966 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2023-12-16 07:12:09,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 07:12:09,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:12:09,968 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:12:09,988 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 07:12:10,169 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 07:12:10,169 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:12:10,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:12:10,169 INFO L85 PathProgramCache]: Analyzing trace with hash 374787070, now seen corresponding path program 5 times [2023-12-16 07:12:10,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:12:10,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998001303] [2023-12-16 07:12:10,170 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 07:12:10,170 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 07:12:10,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:12:10,171 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 07:12:10,172 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 07:12:18,760 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-16 07:12:18,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:12:18,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-16 07:12:18,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:12:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-16 07:12:19,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:12:25,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-16 07:12:25,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:12:25,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998001303] [2023-12-16 07:12:25,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998001303] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:12:25,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:12:25,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-16 07:12:25,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867993568] [2023-12-16 07:12:25,104 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:12:25,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-16 07:12:25,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:12:25,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-16 07:12:25,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-16 07:12:25,109 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand has 96 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 95 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 07:12:47,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-16 07:12:47,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=3838, Invalid=8372, Unknown=0, NotChecked=0, Total=12210 [2023-12-16 07:12:47,158 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 07:12:47,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 07:12:47,159 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 07:12:47,160 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 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 07:12:47,160 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 07:12:47,204 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 07:12:47,360 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 07:12:47,360 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (102states) and FLOYD_HOARE automaton (currently 64 states, 96 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-32-2-1 term,while SimplifyDDA2 was simplifying 32 xjuncts wrt. a ATOM-1 context. [2023-12-16 07:12:47,364 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1] [2023-12-16 07:12:47,366 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 07:12:47,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:12:47 BoogieIcfgContainer [2023-12-16 07:12:47,367 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 07:12:47,367 INFO L158 Benchmark]: Toolchain (without parser) took 66151.79ms. Allocated memory was 282.1MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 225.8MB in the beginning and 7.1GB in the end (delta: -6.9GB). Peak memory consumption was 703.7MB. Max. memory is 8.0GB. [2023-12-16 07:12:47,368 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 210.8MB. Free memory is still 157.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 07:12:47,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 11899.30ms. Allocated memory was 282.1MB in the beginning and 7.8GB in the end (delta: 7.5GB). Free memory was 225.8MB in the beginning and 3.2GB in the end (delta: -2.9GB). Peak memory consumption was 4.6GB. Max. memory is 8.0GB. [2023-12-16 07:12:47,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.04ms. Allocated memory is still 7.8GB. Free memory was 3.2GB in the beginning and 3.2GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 07:12:47,368 INFO L158 Benchmark]: Boogie Preprocessor took 73.18ms. Allocated memory is still 7.8GB. Free memory was 3.2GB in the beginning and 3.2GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 07:12:47,369 INFO L158 Benchmark]: RCFGBuilder took 464.23ms. Allocated memory is still 7.8GB. Free memory was 3.2GB in the beginning and 3.6GB in the end (delta: -403.7MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. [2023-12-16 07:12:47,369 INFO L158 Benchmark]: TraceAbstraction took 53651.30ms. Allocated memory was 7.8GB in the beginning and 7.9GB in the end (delta: 97.5MB). Free memory was 3.6GB in the beginning and 7.1GB in the end (delta: -3.5GB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 07:12:47,370 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 210.8MB. Free memory is still 157.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 11899.30ms. Allocated memory was 282.1MB in the beginning and 7.8GB in the end (delta: 7.5GB). Free memory was 225.8MB in the beginning and 3.2GB in the end (delta: -2.9GB). Peak memory consumption was 4.6GB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.04ms. Allocated memory is still 7.8GB. Free memory was 3.2GB in the beginning and 3.2GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 73.18ms. Allocated memory is still 7.8GB. Free memory was 3.2GB in the beginning and 3.2GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 464.23ms. Allocated memory is still 7.8GB. Free memory was 3.2GB in the beginning and 3.6GB in the end (delta: -403.7MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. * TraceAbstraction took 53651.30ms. Allocated memory was 7.8GB in the beginning and 7.9GB in the end (delta: 97.5MB). Free memory was 3.6GB in the beginning and 7.1GB in the end (delta: -3.5GB). 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (102states) and FLOYD_HOARE automaton (currently 64 states, 96 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-32-2-1 term,while SimplifyDDA2 was simplifying 32 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.6s, OverallIterations: 6, TraceHistogramMax: 46, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 34.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3164 SdHoareTripleChecker+Valid, 8.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3164 mSDsluCounter, 2175 SdHoareTripleChecker+Invalid, 6.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2028 mSDsCounter, 1638 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5381 IncrementalHoareTripleChecker+Invalid, 7019 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1638 mSolverCounterUnsat, 147 mSDtfsCounter, 5381 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 472 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 32.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=5, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 399 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 8.9s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 214 NumberOfCodeBlocks, 214 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 409 ConstructedInterpolants, 0 QuantifiedInterpolants, 1242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1325 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 2800/5600 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