/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy WOLF -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-47.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-17387ad-m [2024-11-06 00:01:49,398 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 00:01:49,458 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-06 00:01:49,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 00:01:49,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 00:01:49,488 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 00:01:49,489 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 00:01:49,489 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 00:01:49,489 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 00:01:49,490 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 00:01:49,490 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 00:01:49,491 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 00:01:49,491 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 00:01:49,492 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 00:01:49,492 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 00:01:49,493 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 00:01:49,493 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 00:01:49,493 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 00:01:49,493 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 00:01:49,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 00:01:49,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 00:01:49,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 00:01:49,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 00:01:49,495 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 00:01:49,495 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 00:01:49,495 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 00:01:49,495 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 00:01:49,496 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 00:01:49,496 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 00:01:49,496 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 00:01:49,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 00:01:49,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 00:01:49,497 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 00:01:49,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 00:01:49,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 00:01:49,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 00:01:49,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 00:01:49,498 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 00:01:49,498 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 00:01:49,498 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 00:01:49,498 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 00:01:49,499 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 00:01:49,499 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 00:01:49,499 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 00:01:49,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> WOLF [2024-11-06 00:01:49,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 00:01:49,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 00:01:49,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 00:01:49,738 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 00:01:49,739 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 00:01:49,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-47.i [2024-11-06 00:01:50,985 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 00:01:51,158 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 00:01:51,159 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-47.i [2024-11-06 00:01:51,168 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c9adc569/b302eea1c3284fbdb8ea4c987bff3939/FLAG920c4e7bb [2024-11-06 00:01:51,545 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c9adc569/b302eea1c3284fbdb8ea4c987bff3939 [2024-11-06 00:01:51,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 00:01:51,549 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-06 00:01:51,550 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 00:01:51,550 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 00:01:51,554 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 00:01:51,556 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 12:01:51" (1/1) ... [2024-11-06 00:01:51,557 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68cde520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:51, skipping insertion in model container [2024-11-06 00:01:51,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 12:01:51" (1/1) ... [2024-11-06 00:01:51,581 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 00:01:51,701 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-47.i[915,928] [2024-11-06 00:01:51,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 00:01:51,775 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 00:01:51,785 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-47.i[915,928] [2024-11-06 00:01:51,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 00:01:51,832 INFO L204 MainTranslator]: Completed translation [2024-11-06 00:01:51,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:51 WrapperNode [2024-11-06 00:01:51,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 00:01:51,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 00:01:51,834 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 00:01:51,834 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 00:01:51,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:51" (1/1) ... [2024-11-06 00:01:51,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:51" (1/1) ... [2024-11-06 00:01:51,877 INFO L138 Inliner]: procedures = 27, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 144 [2024-11-06 00:01:51,878 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 00:01:51,878 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 00:01:51,878 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 00:01:51,879 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 00:01:51,890 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:51" (1/1) ... [2024-11-06 00:01:51,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:51" (1/1) ... [2024-11-06 00:01:51,898 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:51" (1/1) ... [2024-11-06 00:01:51,909 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]. [2024-11-06 00:01:51,909 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:51" (1/1) ... [2024-11-06 00:01:51,909 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:51" (1/1) ... [2024-11-06 00:01:51,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:51" (1/1) ... [2024-11-06 00:01:51,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:51" (1/1) ... [2024-11-06 00:01:51,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:51" (1/1) ... [2024-11-06 00:01:51,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:51" (1/1) ... [2024-11-06 00:01:51,924 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 00:01:51,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 00:01:51,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 00:01:51,926 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 00:01:51,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:51" (1/1) ... [2024-11-06 00:01:51,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 00:01:51,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 00:01:51,964 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) [2024-11-06 00:01:51,975 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 [2024-11-06 00:01:51,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 00:01:51,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 00:01:51,994 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 00:01:51,994 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 00:01:51,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 00:01:51,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 00:01:52,083 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 00:01:52,085 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 00:02:02,259 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-06 00:02:02,259 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 00:02:02,272 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 00:02:02,273 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 00:02:02,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:02:02 BoogieIcfgContainer [2024-11-06 00:02:02,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 00:02:02,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 00:02:02,279 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 00:02:02,281 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 00:02:02,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 12:01:51" (1/3) ... [2024-11-06 00:02:02,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd512df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 12:02:02, skipping insertion in model container [2024-11-06 00:02:02,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:01:51" (2/3) ... [2024-11-06 00:02:02,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd512df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 12:02:02, skipping insertion in model container [2024-11-06 00:02:02,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:02:02" (3/3) ... [2024-11-06 00:02:02,284 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-47.i [2024-11-06 00:02:02,298 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 00:02:02,298 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 00:02:02,356 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 00:02:02,360 INFO L333 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, 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;@2910e5b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 00:02:02,361 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 00:02:02,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 42 states have (on average 1.380952380952381) internal successors, (58), 43 states have internal predecessors, (58), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-06 00:02:02,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-06 00:02:02,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 00:02:02,374 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 00:02:02,374 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 00:02:02,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 00:02:02,378 INFO L85 PathProgramCache]: Analyzing trace with hash 742321370, now seen corresponding path program 1 times [2024-11-06 00:02:02,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-06 00:02:02,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501586228] [2024-11-06 00:02:02,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 00:02:02,388 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 [2024-11-06 00:02:02,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 00:02:02,392 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) [2024-11-06 00:02:02,393 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 [2024-11-06 00:02:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 00:02:03,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 00:02:03,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 00:02:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 168 proven. 54 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2024-11-06 00:02:06,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 00:02:06,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-06 00:02:06,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501586228] [2024-11-06 00:02:06,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501586228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 00:02:06,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1343307490] [2024-11-06 00:02:06,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 00:02:06,603 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-06 00:02:06,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-06 00:02:06,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-06 00:02:06,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-06 00:02:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 00:02:08,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 00:02:08,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 00:02:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-06 00:02:10,828 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 00:02:10,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1343307490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 00:02:10,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 00:02:10,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-06 00:02:10,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975715686] [2024-11-06 00:02:10,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 00:02:10,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 00:02:10,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-06 00:02:10,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 00:02:10,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-06 00:02:10,854 INFO L87 Difference]: Start difference. First operand has 66 states, 42 states have (on average 1.380952380952381) internal successors, (58), 43 states have internal predecessors, (58), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-06 00:02:15,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 00:02:19,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 00:02:23,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 00:02:26,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 00:02:31,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 00:02:35,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 00:02:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 00:02:35,712 INFO L93 Difference]: Finished difference Result 291 states and 542 transitions. [2024-11-06 00:02:35,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 00:02:35,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 136 [2024-11-06 00:02:35,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 00:02:35,724 INFO L225 Difference]: With dead ends: 291 [2024-11-06 00:02:35,724 INFO L226 Difference]: Without dead ends: 228 [2024-11-06 00:02:35,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-06 00:02:35,730 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 225 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 133 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2024-11-06 00:02:35,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 472 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 33 Invalid, 5 Unknown, 0 Unchecked, 24.4s Time] [2024-11-06 00:02:35,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-06 00:02:35,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 131. [2024-11-06 00:02:35,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 86 states have (on average 1.313953488372093) internal successors, (113), 86 states have internal predecessors, (113), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-06 00:02:35,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 197 transitions. [2024-11-06 00:02:35,789 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 197 transitions. Word has length 136 [2024-11-06 00:02:35,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 00:02:35,793 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 197 transitions. [2024-11-06 00:02:35,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-06 00:02:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 197 transitions. [2024-11-06 00:02:35,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-06 00:02:35,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 00:02:35,796 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 00:02:35,817 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 [2024-11-06 00:02:36,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-06 00:02:36,202 WARN L453 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=3,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-06 00:02:36,203 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 00:02:36,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 00:02:36,204 INFO L85 PathProgramCache]: Analyzing trace with hash -268795880, now seen corresponding path program 1 times [2024-11-06 00:02:36,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-06 00:02:36,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830617515] [2024-11-06 00:02:36,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 00:02:36,205 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 [2024-11-06 00:02:36,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 00:02:36,206 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) [2024-11-06 00:02:36,207 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 [2024-11-06 00:02:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 00:02:36,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 00:02:36,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 00:02:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-06 00:02:44,318 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 00:02:44,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-06 00:02:44,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830617515] [2024-11-06 00:02:44,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830617515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 00:02:44,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 00:02:44,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 00:02:44,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835284153] [2024-11-06 00:02:44,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 00:02:44,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 00:02:44,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-06 00:02:44,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 00:02:44,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 00:02:44,320 INFO L87 Difference]: Start difference. First operand 131 states and 197 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-06 00:02:48,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 00:02:53,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 00:02:57,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 00:03:01,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.62s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 00:03:05,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 00:03:09,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 00:03:13,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 00:03:13,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 00:03:13,875 INFO L93 Difference]: Finished difference Result 253 states and 377 transitions. [2024-11-06 00:03:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 00:03:13,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 136 [2024-11-06 00:03:13,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 00:03:13,949 INFO L225 Difference]: With dead ends: 253 [2024-11-06 00:03:13,949 INFO L226 Difference]: Without dead ends: 125 [2024-11-06 00:03:13,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-06 00:03:13,951 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 54 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 43 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2024-11-06 00:03:13,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 250 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 19 Invalid, 6 Unknown, 0 Unchecked, 29.4s Time] [2024-11-06 00:03:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-06 00:03:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 114. [2024-11-06 00:03:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 69 states have internal predecessors, (85), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-06 00:03:13,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 169 transitions. [2024-11-06 00:03:13,969 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 169 transitions. Word has length 136 [2024-11-06 00:03:13,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 00:03:13,971 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 169 transitions. [2024-11-06 00:03:13,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-06 00:03:13,972 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 169 transitions. [2024-11-06 00:03:13,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-06 00:03:13,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 00:03:13,973 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 00:03:13,994 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 [2024-11-06 00:03:14,178 WARN L453 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 [2024-11-06 00:03:14,179 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 00:03:14,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 00:03:14,179 INFO L85 PathProgramCache]: Analyzing trace with hash -2123544737, now seen corresponding path program 1 times [2024-11-06 00:03:14,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-06 00:03:14,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992560807] [2024-11-06 00:03:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 00:03:14,180 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 [2024-11-06 00:03:14,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 00:03:14,182 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) [2024-11-06 00:03:14,183 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 [2024-11-06 00:03:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 00:03:14,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 00:03:14,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 00:03:17,240 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 168 proven. 54 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2024-11-06 00:03:17,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 00:03:17,799 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-06 00:03:17,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992560807] [2024-11-06 00:03:17,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992560807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 00:03:17,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1196033972] [2024-11-06 00:03:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 00:03:17,800 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-06 00:03:17,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-06 00:03:17,802 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-06 00:03:17,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-06 00:03:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 00:03:19,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 00:03:19,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 00:03:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-06 00:03:21,733 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 00:03:21,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1196033972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 00:03:21,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 00:03:21,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-11-06 00:03:21,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875130127] [2024-11-06 00:03:21,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 00:03:21,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 00:03:21,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-06 00:03:21,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 00:03:21,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-06 00:03:21,734 INFO L87 Difference]: Start difference. First operand 114 states and 169 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-06 00:03:26,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 00:03:30,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 00:03:34,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 00:03:38,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []